{"id":2034,"date":"2021-05-11T09:39:45","date_gmt":"2021-05-11T09:39:45","guid":{"rendered":"https:\/\/volcanoschool.org\/pour-adultes\/por-que-existen-volcanes-y-erupciones-de-varios-tipos\/"},"modified":"2021-06-03T16:37:18","modified_gmt":"2021-06-03T16:37:18","slug":"pourquoi-existe-t-il-des-volcans-et-des-eruptions-varies","status":"publish","type":"page","link":"https:\/\/volcanoschool.org\/fr\/pour-adultes\/pourquoi-existe-t-il-des-volcans-et-des-eruptions-varies\/","title":{"rendered":"Pourquoi existe-t-il des volcans et des \u00e9ruptions vari\u00e9s ?"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kokbzvqv-b1a3ee100f7bd3612c6e2a101e3f0d8f\">\n.avia-section.av-kokbzvqv-b1a3ee100f7bd3612c6e2a101e3f0d8f{\nbackground-color:#a4ad00;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-kokbzvqv-b1a3ee100f7bd3612c6e2a101e3f0d8f alternate_color avia-section-no-padding avia-shadow  avia-builder-el-0  el_before_av_submenu  avia-builder-el-first  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kokem2fa-622db9adaba6d3771cd0ac5353179166\">\n#top .hr.hr-invisible.av-kokem2fa-622db9adaba6d3771cd0ac5353179166{\nheight:1px;\n}\n<\/style>\n<div  class='hr av-kokem2fa-622db9adaba6d3771cd0ac5353179166 hr-invisible  avia-builder-el-1  el_before_av_heading  avia-builder-el-first '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-koke9swh-ff75e22df9291f99d93b3b402f5cc699\">\n#top .av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699{\npadding-bottom:0;\ncolor:#f7f7f7;\nfont-size:34px;\n}\nbody .av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .av-special-heading-tag{\nfont-size:34px;\n}\n.av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .special-heading-inner-border{\nborder-color:#f7f7f7;\n}\n.av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .av-subheading{\nfont-size:18px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-koke9swh-ff75e22df9291f99d93b3b402f5cc699 av-special-heading-h2 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-2  el_after_av_hr  el_before_av_hr  av-inherit-size'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >VOLCANOLOGIE POUR D\u00c9BUTANTS<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9oh38-3ace02268b7e6ffb225f83bdeab143cc\">\n#top .hr.hr-invisible.av-9oh38-3ace02268b7e6ffb225f83bdeab143cc{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-9oh38-3ace02268b7e6ffb225f83bdeab143cc hr-invisible  avia-builder-el-3  el_after_av_heading  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div class='clear'><\/div><div id='sub_menu1'  class='av-submenu-container av-dsgrs2-67a5aa4f14c03ea48c579f9c68a4df08 header_color  avia-builder-el-4  el_after_av_section  el_before_av_section  av-sticky-submenu submenu-not-first container_wrap fullsize' style='z-index:301' ><div class='container av-menu-mobile-disabled av-submenu-pos-center'><ul id='av-custom-submenu-1' class='av-subnav-menu' role='menu'>\n<li class='menu-item av-c9r902-2bd50be1aa491f17f13893769ece08fc menu-item-top-level menu-item-top-level-1' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/comprendre-la-terre-pour-comprendre-les-volcans\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#1 COMPRENDRE LA TERRE POUR COMPRENDRE LES VOLCANS<\/span><\/a><\/li>\n<li class='menu-item av-bcomci-d822bc697fb4a2b346ea9a9b680f4f28 menu-item-top-level menu-item-top-level-2' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/un-volcan-pourquoi-comment\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#2 UN VOLCAN ? POURQUOI, COMMENT ?<\/span><\/a><\/li>\n<li class='menu-item av-8vn142-bc0368dafcd61aa323b5df968426b7fa menu-item-top-level menu-item-top-level-3' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/pourquoi-existe-t-il-des-volcans-et-des-eruptions-varies\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#3 POURQUOI EXISTE-T-IL DES VOLCANS ET DES \u00c9RUPTIONS VARI\u00c9S ?<\/span><\/a><\/li>\n<li class='menu-item av-7yjjle-6c22275a8634bd27932fa49173b30c7c menu-item-top-level menu-item-top-level-4' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/volcans-et-produits-volcaniques\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#4 VOLCANS ET PRODUITS VOLCANIQUES<\/span><\/a><\/li>\n<li class='menu-item av-58zo4i-100743a4c69f1c3fad64ef61fe27529e menu-item-top-level menu-item-top-level-5' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/la-puissance-des-eruptions-volcaniques\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#5 LA PUISSANCE DES \u00c9RUPTIONS VOLCANIQUES<\/span><\/a><\/li>\n<li class='menu-item av-4bhlwy-f62dbfa9cb4b084b0684bde4130d9ba2 menu-item-top-level menu-item-top-level-6' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/consequences-des-grandes-eruptions\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#6 CONS\u00c9QUENCES DES GRANDES \u00c9RUPTIONS<\/span><\/a><\/li>\n<li class='menu-item av-2ctvua-d1574aeae06a819620890558e693b61c menu-item-top-level menu-item-top-level-7' role='menuitem'><a href='https:\/\/volcanoschool.org\/fr\/pour-adultes\/pourquoi-existe-t-il-des-volcans-et-des-eruptions-varies\/'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>#7 POURQUOI VIT-ON PR\u00c8S DES VOLCANS ?<\/span><\/a><\/li>\n<\/ul><\/div><\/div><div class='sticky_placeholder'><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-koffb3gt-4606a7f547fd25de62c04d691e89ab98\">\n.avia-section.av-koffb3gt-4606a7f547fd25de62c04d691e89ab98{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_2'  class='avia-section av-koffb3gt-4606a7f547fd25de62c04d691e89ab98 alternate_color avia-section-large avia-shadow  avia-builder-el-5  el_after_av_submenu  el_before_av_section  avia-bg-style-fixed container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-f859i-137de7f9b8116577c21fc2fbd79bd46d sc-av_one_fourth av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-f859i-137de7f9b8116577c21fc2fbd79bd46d\">\n@keyframes av_boxShadowEffect_av-f859i-137de7f9b8116577c21fc2fbd79bd46d-column {\n0%   { box-shadow:  0 0 0 0 #c1ce2d; opacity: 1; }\n100% { box-shadow:  0 0 5px 0 #c1ce2d; opacity: 1; }\n}\n.flex_column.av-f859i-137de7f9b8116577c21fc2fbd79bd46d{\nbox-shadow: 0 0 5px 0 #c1ce2d;\nborder-width:3px;\nborder-color:#c1ce2d;\nborder-style:solid;\nborder-radius:0px 0px 0px 0px;\npadding:20px 20px 80px 20px;\nbackground-color:#c1ce2d;\n}\n<\/style>\n<div  class='flex_column av-f859i-137de7f9b8116577c21fc2fbd79bd46d av_one_fourth  avia-builder-el-6  el_before_av_three_fourth  avia-builder-el-first  first no_margin flex_column_table_cell av-equal-height-column av-align-middle shadow-not-animated  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8frfa-b7858317fcf56a51f8301a33f55d89ef\">\n#top .av-special-heading.av-8frfa-b7858317fcf56a51f8301a33f55d89ef{\npadding-bottom:0;\ncolor:#ffffff;\n}\nbody .av-special-heading.av-8frfa-b7858317fcf56a51f8301a33f55d89ef .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-8frfa-b7858317fcf56a51f8301a33f55d89ef .special-heading-inner-border{\nborder-color:#ffffff;\n}\n.av-special-heading.av-8frfa-b7858317fcf56a51f8301a33f55d89ef .av-subheading{\nfont-size:18px;\n}\n<\/style>\n<div  class='av-special-heading av-8frfa-b7858317fcf56a51f8301a33f55d89ef av-special-heading-h4 custom-color-heading blockquote modern-quote modern-right  avia-builder-el-7  avia-builder-el-no-sibling '><h4 class='av-special-heading-tag '  itemprop=\"headline\"  >BLOCK #3<\/h4><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kokeccj9-25d5d94b1c83ef3b90c04e86dc32c56c\">\n@keyframes av_boxShadowEffect_av-kokeccj9-25d5d94b1c83ef3b90c04e86dc32c56c-column {\n0%   { box-shadow:  0 0 0 0 #9dad26; opacity: 1; }\n100% { box-shadow:  0 0 10px 0 #9dad26; opacity: 1; }\n}\n.flex_column.av-kokeccj9-25d5d94b1c83ef3b90c04e86dc32c56c{\nbox-shadow: 0 0 10px 0 #9dad26;\nborder-width:3px;\nborder-color:#c1ce2d;\nborder-style:solid;\nborder-radius:0px 0px 0px 0px;\npadding:40px 20px 40px 40px;\n}\n<\/style>\n<div  class='flex_column av-kokeccj9-25d5d94b1c83ef3b90c04e86dc32c56c av_three_fourth  avia-builder-el-8  el_after_av_one_fourth  avia-builder-el-last  no_margin flex_column_table_cell av-equal-height-column av-align-middle shadow-not-animated  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29\">\n#top .av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29{\npadding-bottom:0;\nfont-size:42px;\n}\nbody .av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 .av-special-heading-tag{\nfont-size:42px;\n}\n.av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 .av-subheading{\nfont-size:18px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-8ozb8-be69792aaa87b6fbde33d2cae7aa5e29 av-special-heading-h1 custom-color-heading blockquote modern-quote  avia-builder-el-9  avia-builder-el-no-sibling  av-inherit-size'><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Pourquoi existe-t-il des volcans et des \u00e9ruptions vari\u00e9s ?<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5r5w4s-2f8db2ba43c443fc40b82b674d5862f4\">\n.avia-section.av-5r5w4s-2f8db2ba43c443fc40b82b674d5862f4{\nbackground-color:#dddddd;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_3'  class='avia-section av-5r5w4s-2f8db2ba43c443fc40b82b674d5862f4 alternate_color avia-section-default avia-no-border-styling  avia-builder-el-10  el_after_av_section  el_before_av_section  avia-bg-style-fixed container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-5ix94c-ce473a8fd65e80e3aaaa1d2382806963 sc-av_one_full av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5ix94c-ce473a8fd65e80e3aaaa1d2382806963\">\n.flex_column.av-5ix94c-ce473a8fd65e80e3aaaa1d2382806963{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-5ix94c-ce473a8fd65e80e3aaaa1d2382806963 av_one_full  avia-builder-el-11  el_before_av_hr  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-middle av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-59v6p0-9d47b57de93995daed11dfe75b6c91ef\">\n#top .av_textblock_section.av-59v6p0-9d47b57de93995daed11dfe75b6c91ef .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-59v6p0-9d47b57de93995daed11dfe75b6c91ef '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p style=\"text-align: left;\"><strong>La premi\u00e8re cause de la vari\u00e9t\u00e9 des volcans est la source des magmas. <\/strong><\/p>\n<p style=\"text-align: left;\">En zone de subduction ou au niveau d\u2019un point chaud, la roche impliqu\u00e9e dans le processus de fusion est diff\u00e9rente : cro\u00fbte continentale, cro\u00fbte oc\u00e9anique, s\u00e9diments, etc. De plus, un magma issu d\u2019une fusion sous la cro\u00fbte continentale doit aussi traverser une distance plus grande dans celle-ci et peut se \u00ab\u00a0contaminer\u00a0\u00bb en incorporant de petites quantit\u00e9s de roches \u00e0 son passage. Le magma est alors en particulier plus ou moins riche en gaz et en divers \u00e9l\u00e9ments chimiques, qui vont permettre la formation de diff\u00e9rents types de volcans.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-koipgl8d-b147637a9c38b7f5f46d1934394ec93c\">\n.avia-image-container.av-koipgl8d-b147637a9c38b7f5f46d1934394ec93c img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-koipgl8d-b147637a9c38b7f5f46d1934394ec93c .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-koipgl8d-b147637a9c38b7f5f46d1934394ec93c av-styling- avia-align-center  avia-builder-el-13  el_after_av_textblock  avia-builder-el-last '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-2089 avia-img-lazy-loading-not-2089 avia_image ' src=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013.png\" alt='' title='volcano-school-masterclass-adultos-013'  height=\"670\" width=\"1278\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013.png 1278w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013-300x157.png 300w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013-1030x540.png 1030w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013-768x403.png 768w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-013-705x370.png 705w\" sizes=\"(max-width: 1278px) 100vw, 1278px\" \/><\/div><\/div><\/div><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7xgkk-3008a289c886492e777a53b0854d3b47\">\n#top .hr.hr-invisible.av-7xgkk-3008a289c886492e777a53b0854d3b47{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-7xgkk-3008a289c886492e777a53b0854d3b47 hr-invisible  avia-builder-el-14  el_after_av_one_full  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-bb6ik-f264fb2b58619d080024bf055e012a32\">\n.avia-section.av-bb6ik-f264fb2b58619d080024bf055e012a32 .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/04\/volcanoschool-fondo-estrellas-scaled.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_4'  class='avia-section av-bb6ik-f264fb2b58619d080024bf055e012a32 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-15  el_after_av_section  el_before_av_section  avia-full-stretch av-parallax-section avia-bg-style-parallax container_wrap fullsize'  data-section-bg-repeat='stretch'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2xlrrg-0a5940cfba8ade63457e58f444388d32\">\n.avia-section.av-2xlrrg-0a5940cfba8ade63457e58f444388d32{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_5'  class='avia-section av-2xlrrg-0a5940cfba8ade63457e58f444388d32 alternate_color avia-section-large avia-shadow  avia-builder-el-16  el_after_av_section  el_before_av_section  avia-bg-style-fixed av-minimum-height av-minimum-height-50 av-height-50  container_wrap fullsize'   data-av_minimum_height_pc='50' data-av_min_height_opt='50'><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-2qkd2s-64662d03100a7c4382ddc2e2d61de1fc sc-av_two_fifth av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2qkd2s-64662d03100a7c4382ddc2e2d61de1fc\">\n.flex_column.av-2qkd2s-64662d03100a7c4382ddc2e2d61de1fc{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2qkd2s-64662d03100a7c4382ddc2e2d61de1fc av_two_fifth  avia-builder-el-17  el_before_av_one_fourth  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-middle av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-xan0-ebc6df3eadf519fe31b68939ce03125e\">\n#top .av_textblock_section.av-xan0-ebc6df3eadf519fe31b68939ce03125e .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-xan0-ebc6df3eadf519fe31b68939ce03125e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Ces morceaux de ponce de El Hierro (Espagne) montrent la contamination d\u2019un magma basaltique profond (en noir) par des s\u00e9diments marins (en blanc). Le magma a fondu les s\u00e9diments en les traversant et un m\u00e9lange (contamination) s\u2019est produit.<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-wmhz0-3d0d80ee535e0bf15d9108c90a00d63c\">\n.flex_column.av-wmhz0-3d0d80ee535e0bf15d9108c90a00d63c{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-wmhz0-3d0d80ee535e0bf15d9108c90a00d63c av_one_fourth  avia-builder-el-19  el_after_av_two_fifth  avia-builder-el-last  flex_column_table_cell av-equal-height-column av-align-middle av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kojt92xm-0f82917e2048a4c8274299d4deb78a54\">\n.avia-image-container.av-kojt92xm-0f82917e2048a4c8274299d4deb78a54 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-kojt92xm-0f82917e2048a4c8274299d4deb78a54 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-kojt92xm-0f82917e2048a4c8274299d4deb78a54 av-styling- avia-align-center  avia-builder-el-20  el_before_av_hr  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-1393 avia-img-lazy-loading-not-1393 avia_image ' src=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014.jpg\" alt='' title='volcano-school-masterclass-adultos-014'  height=\"633\" width=\"635\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014.jpg 635w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014-300x300.jpg 300w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014-80x80.jpg 80w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014-36x36.jpg 36w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-014-180x180.jpg 180w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kokj6f7u-c3b757be553dbb62d8538d7861775b9c\">\n#top .hr.hr-invisible.av-kokj6f7u-c3b757be553dbb62d8538d7861775b9c{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-kokj6f7u-c3b757be553dbb62d8538d7861775b9c hr-invisible  avia-builder-el-21  el_after_av_image  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kojta48c-8ee2639d5049a501606122dfa0378107\">\n#top .av_textblock_section.av-kojta48c-8ee2639d5049a501606122dfa0378107 .avia_textblock{\nfont-size:10px;\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-kojta48c-8ee2639d5049a501606122dfa0378107 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p style=\"text-align: center;\">Photo : S. Barde-Cabusson<\/p>\n<\/div><\/section><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5vjb0-2c210536e7353fe0d9076323ec5fccb2\">\n.avia-section.av-5vjb0-2c210536e7353fe0d9076323ec5fccb2 .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/04\/volcanoschool-fondo-estrellas-scaled.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_6'  class='avia-section av-5vjb0-2c210536e7353fe0d9076323ec5fccb2 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-23  el_after_av_section  el_before_av_section  avia-full-stretch av-parallax-section avia-bg-style-parallax container_wrap fullsize'  data-section-bg-repeat='stretch'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1mi28k-51eda56f198edb42ced970ff026ad378\">\n.avia-section.av-1mi28k-51eda56f198edb42ced970ff026ad378{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_7'  class='avia-section av-1mi28k-51eda56f198edb42ced970ff026ad378 alternate_color avia-section-large avia-shadow  avia-builder-el-24  el_after_av_section  el_before_av_section  avia-bg-style-fixed av-minimum-height av-minimum-height-50 av-height-50  container_wrap fullsize'   data-av_minimum_height_pc='50' data-av_min_height_opt='50'><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-1f0bl8-0a889a304efdeef8608a02b38c4b29b6 sc-av_one_half av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1f0bl8-0a889a304efdeef8608a02b38c4b29b6\">\n.flex_column.av-1f0bl8-0a889a304efdeef8608a02b38c4b29b6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1f0bl8-0a889a304efdeef8608a02b38c4b29b6 av_one_half  avia-builder-el-25  el_before_av_one_half  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4epas-c595b497d06096a69236806437cae75d\">\n#top .av_textblock_section.av-4epas-c595b497d06096a69236806437cae75d .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-4epas-c595b497d06096a69236806437cae75d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Ce n\u2019est pas tout ! Sur un m\u00eame volcan, les \u00e9ruptions sont parfois espac\u00e9es de centaines d\u2019ann\u00e9es\u2026 Pendant ce temps, que se passe-t-il dans la chambre magmatique ? Le magma subit des transformations.<\/p>\n<p>Trois m\u00e9canismes principaux entrent en jeu :<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-737z6-63ef7db834b075a961dc775a4b19ef89\">\n.flex_column.av-737z6-63ef7db834b075a961dc775a4b19ef89{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-737z6-63ef7db834b075a961dc775a4b19ef89 av_one_half  avia-builder-el-27  el_after_av_one_half  el_before_av_one_full  flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kolaq0bb-0973c7f33edc8808e5b162c7fad5c7d7\">\n#top .av_textblock_section.av-kolaq0bb-0973c7f33edc8808e5b162c7fad5c7d7 .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-kolaq0bb-0973c7f33edc8808e5b162c7fad5c7d7 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><ol>\n<li>La contamination par la roche environnante de la chambre magmatique (fl\u00e8ches noires)<\/li>\n<li>L\u2019injection de magma nouveau (fl\u00e8che orange)<\/li>\n<li>La cristallisation fractionn\u00e9e : un processus ou la cristallisation de min\u00e9raux mobilise certains \u00e9l\u00e9ments chimiques plut\u00f4t que d\u2019autres.<\/li>\n<\/ol>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1a6e0k-5200bfc1ce7d81776c978ec3487cc6a3\">\n.flex_column.av-1a6e0k-5200bfc1ce7d81776c978ec3487cc6a3{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1a6e0k-5200bfc1ce7d81776c978ec3487cc6a3 av_one_full  avia-builder-el-29  el_after_av_one_half  el_before_av_hr  first flex_column_div av-zero-column-padding  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kojtc76x-22c58cbab362cd83acefd34efb76f7ce\">\n.avia-image-container.av-kojtc76x-22c58cbab362cd83acefd34efb76f7ce img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-kojtc76x-22c58cbab362cd83acefd34efb76f7ce .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-kojtc76x-22c58cbab362cd83acefd34efb76f7ce av-styling- avia-align-center  avia-builder-el-30  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-1391 avia-img-lazy-loading-not-1391 avia_image ' src=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015.png\" alt='' title='volcano-school-masterclass-adultos-015'  height=\"391\" width=\"1554\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015.png 1554w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-300x75.png 300w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-1030x259.png 1030w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-768x193.png 768w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-1536x386.png 1536w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-1500x377.png 1500w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/volcano-school-masterclass-adultos-015-705x177.png 705w\" sizes=\"(max-width: 1554px) 100vw, 1554px\" \/><\/div><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kolasho0-4d0e0e4f56015c6da5a6e8e6d7dfa399\">\n#top .hr.hr-invisible.av-kolasho0-4d0e0e4f56015c6da5a6e8e6d7dfa399{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-kolasho0-4d0e0e4f56015c6da5a6e8e6d7dfa399 hr-invisible  avia-builder-el-31  el_after_av_one_full  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kolajj6y-3473ea3f3f66ad9e50b489dc8d6b852d\">\n#top .av_textblock_section.av-kolajj6y-3473ea3f3f66ad9e50b489dc8d6b852d .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-kolajj6y-3473ea3f3f66ad9e50b489dc8d6b852d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>La composition du magma se modifie donc petit a petit et une \u00e9ruption se produisant \u00e0 un moment diff\u00e8rent de cette \u00e9volution aura une composition diff\u00e9rente. Et cela peut donner lieu a un volcanisme plus ou moins violent.<\/p>\n<\/div><\/section>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1gqhg-56d02fafd657d27f0d68eccd52ecf7c5\">\n.avia-section.av-1gqhg-56d02fafd657d27f0d68eccd52ecf7c5 .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/04\/volcanoschool-fondo-estrellas-scaled.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_8'  class='avia-section av-1gqhg-56d02fafd657d27f0d68eccd52ecf7c5 main_color avia-section-large avia-no-border-styling  avia-builder-el-33  el_after_av_section  el_before_av_section  avia-full-stretch av-parallax-section avia-bg-style-parallax container_wrap fullsize'  data-section-bg-repeat='stretch'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kokir5zd-acf4efd70e44fd146c29c927fe6e848e\">\n.flex_column.av-kokir5zd-acf4efd70e44fd146c29c927fe6e848e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-kokir5zd-acf4efd70e44fd146c29c927fe6e848e av_one_full  avia-builder-el-34  avia-builder-el-no-sibling  first flex_column_div av-animated-generic fade-in av-zero-column-padding  '     ><section  class='av_textblock_section av-kokim7g7-59ae191b3adf7a773043dee08828702a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-fxnkk-1290d0d05fd37943210bad0c0b8186c9\">\n.av_font_icon.av-fxnkk-1290d0d05fd37943210bad0c0b8186c9{\ncolor:#ffffff;\nborder-color:#ffffff;\n}\n.avia-svg-icon.av-fxnkk-1290d0d05fd37943210bad0c0b8186c9 svg:first-child{\nstroke:#ffffff;\nfill:#ffffff;\n}\n.av_font_icon.av-fxnkk-1290d0d05fd37943210bad0c0b8186c9 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-fxnkk-1290d0d05fd37943210bad0c0b8186c9 avia_animate_when_visible av-icon-style- avia-icon-pos- avia-iconfont avia-font-entypo-fontello avia-icon-animate'><span class='av-icon-char' data-av_icon='\ue83e' data-av_iconfont='entypo-fontello' aria-hidden=\"true\" ><\/span><\/span><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-awub8-00e54aafb1410294093441f95e3807bc\">\n#top .hr.hr-invisible.av-awub8-00e54aafb1410294093441f95e3807bc{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-awub8-00e54aafb1410294093441f95e3807bc hr-invisible  avia-builder-el-37  el_after_av_font_icon  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p>\n<p>On ne sait pas vraiment a quoi ressemble une chambre magmatique ! L\u2019imagerie g\u00e9ophysique et les r\u00e9servoirs magmatiques anciens mis \u00e0 jour par l\u2019\u00e9rosion permettent d\u2019en avoir une id\u00e9e mais aucune m\u00e9thode ne permet d\u2019avoir suffisamment de pr\u00e9cision pour les visualiser en d\u00e9tail. Le saviez-vous ? Maintenant oui !<\/p>\n<\/div><\/section><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1cr3z8-8d7cd9e37d831a0352964602bd150d43\">\n.avia-section.av-1cr3z8-8d7cd9e37d831a0352964602bd150d43{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_9'  class='avia-section av-1cr3z8-8d7cd9e37d831a0352964602bd150d43 alternate_color avia-section-large avia-shadow  avia-builder-el-38  el_after_av_section  el_before_av_section  avia-bg-style-fixed av-minimum-height av-minimum-height-50 av-height-50  container_wrap fullsize'   data-av_minimum_height_pc='50' data-av_min_height_opt='50'><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-16z7es-5f34368aaa769dc5a942bfa0fad852ad sc-av_one_half av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-16z7es-5f34368aaa769dc5a942bfa0fad852ad\">\n.flex_column.av-16z7es-5f34368aaa769dc5a942bfa0fad852ad{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-16z7es-5f34368aaa769dc5a942bfa0fad852ad av_one_half  avia-builder-el-39  el_before_av_one_half  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1532h8-f4cb4d598e97ed5b490a8d23c62b97bc\">\n#top .av_textblock_section.av-1532h8-f4cb4d598e97ed5b490a8d23c62b97bc .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-1532h8-f4cb4d598e97ed5b490a8d23c62b97bc '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Pour en savoir plus sur la cristallisation fractionn\u00e9e : dans une chambre magmatique, s\u2019il n\u2019y a pas d\u2019injection de nouveau magma depuis les profondeurs, la temp\u00e9rature diminue progressivement. Avec ce refroidissement, le magma commence a cristalliser : des min\u00e9raux se forment et comme chaque min\u00e9ral cristallise \u00e0 une temp\u00e9ratures particuli\u00e8re, ils se forment de fa\u00e7on progressive dans cet ordre : 1 : olivine ; 2 : olivine et pyrox\u00e8ne ; 3 : pyrox\u00e8ne et plagioclase ; 4: plagioclase.<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-dqagi-745de1e9a78e74413a1b95f0591cef02\">\n.flex_column.av-dqagi-745de1e9a78e74413a1b95f0591cef02{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-dqagi-745de1e9a78e74413a1b95f0591cef02 av_one_half  avia-builder-el-41  el_after_av_one_half  el_before_av_one_full  flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-72k22-65c9dd3c9b289be4fbf5b272a7f8f872\">\n#top .av_textblock_section.av-72k22-65c9dd3c9b289be4fbf5b272a7f8f872 .avia_textblock{\ncolor:#595959;\n}\n<\/style>\n<section  class='av_textblock_section av-72k22-65c9dd3c9b289be4fbf5b272a7f8f872 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Ces min\u00e9raux, plus lourds que le magma lui-m\u00eame, coulent progressivement au fond de la chambre magmatique, formant une roche dite cumulative. A chaque \u00e9tape, le magma se voit priv\u00e9 des \u00e9l\u00e9ments chimiques mobilis\u00e9s par chaque min\u00e9ral ; principalement le fer et le magn\u00e9sium. Sa composition change donc au cours du temps. Il tend a s\u2019enrichir en silice ce qui, tout comme la diminution de temp\u00e9rature, rend le magma plus visqueux et engendre des \u00e9ruptions plus explosives.<\/p>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-xgp5w-1aaf3957338ee5b046348220df20528a\">\n.flex_column.av-xgp5w-1aaf3957338ee5b046348220df20528a{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-xgp5w-1aaf3957338ee5b046348220df20528a av_one_full  avia-builder-el-43  el_after_av_one_half  avia-builder-el-last  first flex_column_div av-zero-column-padding  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kojtezlo-4663a0a4865998aabd0c5bba92d726c5\">\n.avia-image-container.av-kojtezlo-4663a0a4865998aabd0c5bba92d726c5 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-kojtezlo-4663a0a4865998aabd0c5bba92d726c5 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-kojtezlo-4663a0a4865998aabd0c5bba92d726c5 av-styling- avia-align-center  avia-builder-el-44  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https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-016-768x292.png 768w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-016-1536x584.png 1536w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-016-1500x570.png 1500w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-016-705x268.png 705w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/06\/volcano-school-masterclass-adultos-016-845x321.png 845w\" sizes=\"(max-width: 1710px) 100vw, 1710px\" \/><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-74lzo-614eb7e09427364d950d199670016420\">\n.avia-section.av-74lzo-614eb7e09427364d950d199670016420 .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/04\/volcanoschool-fondo-estrellas-scaled.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_10'  class='avia-section av-74lzo-614eb7e09427364d950d199670016420 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-45  el_after_av_section  el_before_av_section  avia-full-stretch av-parallax-section avia-bg-style-parallax container_wrap fullsize'  data-section-bg-repeat='stretch'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1ugf0q-839e152cdd9ed26a9b5ebf6a88a40994\">\n.avia-section.av-1ugf0q-839e152cdd9ed26a9b5ebf6a88a40994{\nbackground-color:#c1ce2d;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_11'  class='avia-section av-1ugf0q-839e152cdd9ed26a9b5ebf6a88a40994 main_color avia-section-default avia-no-border-styling  avia-builder-el-46  el_after_av_section  el_before_av_section  cinta-roja-dona avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-1quq1e-aa8ed029303178c11b3dc14d1a64a33f sc-av_one_third av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1quq1e-aa8ed029303178c11b3dc14d1a64a33f\">\n.flex_column.av-1quq1e-aa8ed029303178c11b3dc14d1a64a33f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1quq1e-aa8ed029303178c11b3dc14d1a64a33f av_one_third  avia-builder-el-47  el_before_av_two_third  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic fade-in av-zero-column-padding avia-link-column av-column-link  '    data-link-column-url=\"https:\/\/volcanoactive.shop\/producto\/la-tierra-y-los-volcanes\/\"  data-link-column-target=\"_blank\"   ><a class=\"av-screen-reader-only\" href=https:\/\/volcanoactive.shop\/producto\/la-tierra-y-los-volcanes\/  target=\"_blank\" >Suivre un lien ajout\u00e9 manuellement<\/a><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1n25de-9dc89d9233f0ba136f6761105e0614cd\">\n.avia-image-container.av-1n25de-9dc89d9233f0ba136f6761105e0614cd img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-1n25de-9dc89d9233f0ba136f6761105e0614cd .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-1n25de-9dc89d9233f0ba136f6761105e0614cd av-styling- avia-align-center  avia-builder-el-48  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-1247 avia-img-lazy-loading-not-1247 avia_image ' src=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/la-tierra-y-los-volcanes.png\" alt='' title='la-tierra-y-los-volcanes'  height=\"690\" width=\"465\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/la-tierra-y-los-volcanes.png 465w, https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/05\/la-tierra-y-los-volcanes-202x300.png 202w\" sizes=\"(max-width: 465px) 100vw, 465px\" \/><\/div><\/div><\/div><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4zchu-196ce40400035bd2e643e95a9649e1c0\">\n.flex_column.av-4zchu-196ce40400035bd2e643e95a9649e1c0{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-4zchu-196ce40400035bd2e643e95a9649e1c0 av_two_third  avia-builder-el-49  el_after_av_one_third  avia-builder-el-last  flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic fade-in av-zero-column-padding avia-link-column av-column-link  '    data-link-column-url=\"https:\/\/volcanoactive.shop\/producto\/la-tierra-y-los-volcanes\/\"  data-link-column-target=\"_blank\"   ><a class=\"av-screen-reader-only\" href=https:\/\/volcanoactive.shop\/producto\/la-tierra-y-los-volcanes\/  target=\"_blank\" >Suivre un lien ajout\u00e9 manuellement<\/a><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-171jnm-25780065a90aa363b6e49bb905a7fe9a\">\n#top .av-special-heading.av-171jnm-25780065a90aa363b6e49bb905a7fe9a{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-171jnm-25780065a90aa363b6e49bb905a7fe9a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-171jnm-25780065a90aa363b6e49bb905a7fe9a .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-171jnm-25780065a90aa363b6e49bb905a7fe9a av-special-heading-h2 blockquote modern-quote  avia-builder-el-50  el_before_av_textblock  avia-builder-el-first '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >NOTRE LIVRE<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13dwgi-5028f51674657066bf4c8914e22967ad\">\n#top .av_textblock_section.av-13dwgi-5028f51674657066bf4c8914e22967ad .avia_textblock{\nfont-size:40px;\ncolor:#15255f;\n}\n<\/style>\n<section  class='av_textblock_section av-13dwgi-5028f51674657066bf4c8914e22967ad '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='av-small-hide av-mini-hide avia_textblock av_inherit_color'  itemprop=\"text\" ><p class=\"handwrite\" style=\"text-align: left; font-size: 1.7em; color: #2c3849;\">LA TERRE ET LES VOLCANS<span class=\"flecha-donativo\" style=\"color: #2c3849; font-size: 60px; font-weight: 900px; vertical-align: inherit;\">&gt;<\/span><\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-z9u7m-40db0a403ff6c55f35d4358911cc77a9\">\n#top .av_textblock_section.av-z9u7m-40db0a403ff6c55f35d4358911cc77a9 .avia_textblock{\nfont-size:40px;\ncolor:#15255f;\n}\n<\/style>\n<section  class='av_textblock_section av-z9u7m-40db0a403ff6c55f35d4358911cc77a9 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='av-desktop-hide av-medium-hide avia_textblock av_inherit_color'  itemprop=\"text\" ><p class=\"handwrite\" style=\"text-align: left; font-size: 1.4em; color: #2c3849;\">LA TERRE ET LES VOLCANS<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-qtgne-54c3cf176103205e47599522f7afc5f3\">\n#top .hr.hr-invisible.av-qtgne-54c3cf176103205e47599522f7afc5f3{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-qtgne-54c3cf176103205e47599522f7afc5f3 hr-invisible  avia-builder-el-53  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lknky-54e7c3923f2cd38e9335e7a239a635a1\">\n#top .av_textblock_section.av-lknky-54e7c3923f2cd38e9335e7a239a635a1 .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-lknky-54e7c3923f2cd38e9335e7a239a635a1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Un voyage direct dans la connaissance du monde volcanique par Anne Fornier et Fernando Minguela de la Fondation Volcano Active.<\/p>\n<p>\u00ab\u00a0<em>Lorsque nous avons commenc\u00e9 \u00e0 donner la masterclass Volcano School aux enfants des \u00e9coles primaires, nous nous sommes rendu compte que tous les livres sur les volcans \u00e9taient fantastiques, mais aucun n&rsquo;expliquait de mani\u00e8re directe et con\u00e7ue pour les petits, depuis leur origine, leurs parties, les types de volcans, les dangers&#8230;\u00a0\u00bb<\/em><\/p>\n<p>\u00c9duquer nos enfants \u00e0 l&rsquo;environnement, \u00e0 travers la connaissance du monde volcanique, c&rsquo;est donner une chance de plus \u00e0 la plan\u00e8te et \u00e0 sa g\u00e9n\u00e9ration. En achetant notre livre, vous collaborez \u00e0 leur \u00e9ducation et \u00e0 celle de milliers d&rsquo;enfants dans le monde.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1nq62-faedbba2c2de4d4242f9f4c43656b59a\">\n#top .hr.hr-invisible.av-1nq62-faedbba2c2de4d4242f9f4c43656b59a{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-1nq62-faedbba2c2de4d4242f9f4c43656b59a hr-invisible  avia-builder-el-55  el_after_av_textblock  el_before_av_button '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<div  class='avia-button-wrap av-11ste-4b5b556f5dabbe56ac46adc591d272e1-wrap avia-button-right  avia-builder-el-56  el_after_av_hr  avia-builder-el-last  para'><a href='https:\/\/donativos.volcanofoundation.org'  class='avia-button av-11ste-4b5b556f5dabbe56ac46adc591d272e1 av-link-btn avia-icon_select-no avia-size-large avia-position-right avia-color-light'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"ACHETEZ !\"><span class='avia_iconbox_title' >ACHETEZ !<\/span><\/a><\/div><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-bmcis-00dd55a0fc8c25adf746220c3e8ec8e3\">\n.avia-section.av-bmcis-00dd55a0fc8c25adf746220c3e8ec8e3 .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/volcanoschool.org\/wp-content\/uploads\/2021\/04\/volcanoschool-fondo-estrellas-scaled.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_12'  class='avia-section av-bmcis-00dd55a0fc8c25adf746220c3e8ec8e3 main_color avia-section-no-padding avia-no-border-styling  avia-builder-el-57  el_after_av_section  avia-builder-el-last  avia-full-stretch av-parallax-section avia-bg-style-parallax container_wrap fullsize'  data-section-bg-repeat='stretch'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner main_color avia-full-stretch'><\/div><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-2034'><div class='entry-content-wrapper clearfix'>\n","protected":false},"excerpt":{"rendered":"<p>La primera causa de la variedad de volcanes es la fuente del magma.<\/p>\n<p>En una zona de subducci\u00f3n o en un punto caliente, la roca involucrada en el proceso de fusi\u00f3n es diferente: corteza continental, corteza oce\u00e1nica, sedimentos, etc<\/p>\n","protected":false},"author":3,"featured_media":1387,"parent":2002,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2034","page","type-page","status-publish","has-post-thumbnail","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/pages\/2034","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/comments?post=2034"}],"version-history":[{"count":7,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/pages\/2034\/revisions"}],"predecessor-version":[{"id":2147,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/pages\/2034\/revisions\/2147"}],"up":[{"embeddable":true,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/pages\/2002"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/media\/1387"}],"wp:attachment":[{"href":"https:\/\/volcanoschool.org\/fr\/wp-json\/wp\/v2\/media?parent=2034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}