{"id":14236,"date":"2021-07-23T16:59:54","date_gmt":"2021-07-23T14:59:54","guid":{"rendered":"http:\/\/volcanx.cluster031.hosting.ovh.net\/?post_type=glossary&#038;p=14236"},"modified":"2021-07-26T17:11:05","modified_gmt":"2021-07-26T15:11:05","slug":"agglomerre-fr","status":"publish","type":"glossary","link":"https:\/\/volcanofoundation.org\/fr\/glossary\/agglomerre-fr\/","title":{"rendered":"AGGLOM\u00c9R\u00c9"},"content":{"rendered":"<p>&Eacute;galement connu sous le nom d&rsquo;<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;AGGLOM&Eacute;R&Eacute;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&Eacute;galement connu sous le nom d&amp;#039;agglom&eacute;r&eacute; &amp;lt;i&amp;gt;siliceux&amp;lt;\/i&amp;gt;. La vari&eacute;t&eacute; l&eacute;g&egrave;re, poreuse et opaline de silice blanche ou presque blanche et d&eacute;pos&eacute;e sous forme d&amp;#039;incrustation par les pr&eacute;cipitations des eaux des geysers et des sources chaudes.&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/agglomerre-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">agglom&eacute;r&eacute;<\/a> <i>siliceux<\/i>. La vari&eacute;t&eacute; l&eacute;g&egrave;re, poreuse et opaline de <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;SILICE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Le dioxyde de silicium, le compos&eacute; rocaille le plus abondant sur Terre et le constituant mol&eacute;culaire pr&eacute;dominant des roches volcaniques et des magmas. Il a tendance &agrave; se polym&eacute;riser en cha&icirc;nes mol&eacute;culaires, augmentant la viscosit&eacute; du magma. Le magma basaltique, ayant un SiO2 plus faible, est assez fluide, mais avec une teneur croissante en SiO2, en and&eacute;site, en dacite et en rhyolite, les magmas deviennent progressivement plus visqueux. Parce qu&amp;#039;il est plus difficile pour les gaz dissous de s&amp;#039;&eacute;chapper de magma plus visqueux, les magmas de silice plus &eacute;lev&eacute;s &eacute;clatent g&eacute;n&eacute;ralement de mani&egrave;re plus explosive.&lt;\/div&gt;\"  href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/silice-fr\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>silice<\/a> blanche ou presque blanche et d&eacute;pos&eacute;e sous forme d&rsquo;incrustation par les pr&eacute;cipitations des eaux des geysers et des sources chaudes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&Eacute;galement connu sous le nom d&rsquo;<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;AGGLOM&Eacute;R&Eacute;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&Eacute;galement connu sous le nom d&amp;#039;agglom&eacute;r&eacute; &amp;lt;i&amp;gt;siliceux&amp;lt;\/i&amp;gt;. La vari&eacute;t&eacute; l&eacute;g&egrave;re, poreuse et opaline de silice blanche ou presque blanche et d&eacute;pos&eacute;e sous forme d&amp;#039;incrustation par les pr&eacute;cipitations des eaux des geysers et des sources chaudes.&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/agglomerre-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">agglom&eacute;r&eacute;<\/a> siliceux. La vari&eacute;t&eacute; l&eacute;g&egrave;re, poreuse et opaline de <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;SILICE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Le dioxyde de silicium, le compos&eacute; rocaille le plus abondant sur Terre et le constituant mol&eacute;culaire pr&eacute;dominant des roches volcaniques et des magmas. Il a tendance &agrave; se polym&eacute;riser en cha&icirc;nes mol&eacute;culaires, augmentant la viscosit&eacute; du magma. Le magma basaltique, ayant un SiO2 plus faible, est assez fluide, mais avec une teneur croissante en SiO2, en and&eacute;site, en dacite et en rhyolite, les magmas deviennent progressivement plus visqueux. Parce qu&amp;#039;il est plus difficile pour les gaz dissous de s&amp;#039;&eacute;chapper de magma plus visqueux, les magmas de silice plus &eacute;lev&eacute;s &eacute;clatent g&eacute;n&eacute;ralement de mani&egrave;re plus explosive.&lt;\/div&gt;\" href=\"https:\/\/volcanofoundation.org\/fr\/glossary\/silice-fr\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">silice<\/a> blanche ou presque blanche et d&eacute;pos&eacute;e sous forme d&rsquo;incrustation par les pr&eacute;cipitations des eaux des geysers et des sources chaudes.<\/p>\n","protected":false},"author":8,"featured_media":0,"menu_order":0,"template":"","meta":{"footnotes":""},"class_list":["post-14236","glossary","type-glossary","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n\t<meta 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