{"id":50,"date":"2022-03-21T15:53:26","date_gmt":"2022-03-21T14:53:26","guid":{"rendered":"http:\/\/cristallographie33.fr\/?page_id=50"},"modified":"2026-03-12T17:42:15","modified_gmt":"2026-03-12T16:42:15","slug":"evenement","status":"publish","type":"page","link":"https:\/\/cristallographie33.fr\/index.php\/evenement\/","title":{"rendered":"A vos agendas"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"50\" class=\"elementor elementor-50\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-814a482 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"814a482\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d0416aa elementor-invisible\" data-id=\"d0416aa\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;fadeIn&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c032326 elementor-widget elementor-widget-heading\" data-id=\"c032326\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.12.0 - 29-03-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">A vos agendas<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e002980 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e002980\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-d7fdc9a\" data-id=\"d7fdc9a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-634f15e elementor-widget elementor-widget-heading\" data-id=\"634f15e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><br>Conf\u00e9rence de printemps de l'ABC <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ee1edc elementor-widget elementor-widget-heading\" data-id=\"8ee1edc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Mardi, Avril 28, 2026<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0da8128 elementor-widget elementor-widget-heading\" data-id=\"0da8128\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">10h, amphith\u00e9\u00e2tre de l\u2019ICMCB <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2dfc7a elementor-widget elementor-widget-heading\" data-id=\"e2dfc7a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<span class=\"elementor-heading-title elementor-size-large\">Jean-Christophe VIENNET<\/span>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4e4d0d elementor-widget elementor-widget-heading\" data-id=\"f4e4d0d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Maitre de conf\u00e9rence au Mus\u00e9um National d\u2019Histoire Naturelle de Paris (MNHN) <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b59e3ec elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"b59e3ec\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Les argiles ast\u00e9ro\u00efdales, une histoire d\u2019eau <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7962c89 elementor-widget elementor-widget-text-editor\" data-id=\"7962c89\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.12.0 - 29-03-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"background-color: transparent; text-align: justify;\">Les m\u00e9t\u00e9orites et les ast\u00e9ro\u00efdes carbon\u00e9s les plus primitifs chimiquement, les objets de type Ivuna (CI), sont principalement constitu\u00e9s de minuscules min\u00e9raux : les argiles. Ces argiles se sont form\u00e9es tr\u00e8s t\u00f4t, il y a plus de 4,5 milliards d\u2019ann\u00e9es, et nous racontent l\u2019une des grandes histoires du Syst\u00e8me solaire : celle de l\u2019eau. Comprendre leur origine ne revient pas seulement \u00e0 retracer l\u2019histoire de quelques min\u00e9raux, c\u2019est \u00e9clairer celle de l\u2019eau dans les tout premiers instants de notre Syst\u00e8me solaire.<\/span><\/p><p style=\"text-align: justify;\"><span lang=\"FR\">Pendant longtemps, les scientifiques ont pens\u00e9 que ces argiles r\u00e9sultaient exclusivement d\u2019une alt\u00e9ration par de l\u2019eau liquide circulant \u00e0 l\u2019int\u00e9rieur des ast\u00e9ro\u00efdes. Cette vision soul\u00e8ve toutefois un paradoxe en cosmochimie : comment concilier la min\u00e9ralogie fortement alt\u00e9r\u00e9e des chondrites CI avec leur statut de mat\u00e9riaux chondritiques parmi les plus primitifs chimiquement ?<\/span><\/p><p style=\"text-align: justify;\"><span lang=\"FR\">Dans cette conf\u00e9rence, je pr\u00e9senterai une autre possibilit\u00e9 : et si une partie de ces argiles s\u2019\u00e9tait form\u00e9e encore plus t\u00f4t, directement dans la n\u00e9buleuse solaire, le nuage de gaz et de poussi\u00e8res \u00e0 l\u2019origine des premiers solides de notre Syst\u00e8me solaire ?<\/span><\/p><p style=\"text-align: justify;\"><span lang=\"FR\">\u00c0 partir d\u2019une \u00e9tude min\u00e9ralogique fine des argiles des m\u00e9t\u00e9orites CI, fond\u00e9e sur la diffraction des rayons X, nous utilisons la mod\u00e9lisation des d\u00e9fauts d\u2019empilement au sein des cristaux pour discuter des processus de formation de ces argiles. L\u2019analyse des profils de diffraction est coupl\u00e9e \u00e0 l\u2019\u00e9tude des \u00e9tats d\u2019oxydor\u00e9duction du fer (Fe\u00b2\u207a\/Fe\u00b3\u207a) afin de contraindre les conditions redox et de confronter ces r\u00e9sultats \u00e0 des simulations thermodynamiques de condensation hors \u00e9quilibre.<\/span><\/p><p style=\"text-align: justify;\"><span lang=\"FR\">Ces travaux montrent que certaines signatures min\u00e9ralogiques sont compatibles avec des environnements bien plus vari\u00e9s que ce que l\u2019on imaginait, ouvrant la voie \u00e0 des sc\u00e9narios de formation alternatifs, potentiellement plus pr\u00e9coces que le seul cadre d\u2019une alt\u00e9ration ast\u00e9ro\u00efdale classique.<\/span><\/p><p style=\"text-align: justify;\"><span lang=\"FR\">Je pr\u00e9senterai \u00e9galement mon projet ANR JCJC NEBULACLAY, qui vise \u00e0 tester exp\u00e9rimentalement et thermodynamiquement l\u2019hypoth\u00e8se d\u2019une formation des phyllosilicates dans des conditions simulant la n\u00e9buleuse solaire.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ee866e9 elementor-widget elementor-widget-spacer\" data-id=\"ee866e9\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.12.0 - 29-03-2023 *\/\n.elementor-column .elementor-spacer-inner{height:var(--spacer-size)}.e-con{--container-widget-width:100%}.e-con-inner>.elementor-widget-spacer,.e-con>.elementor-widget-spacer{width:var(--container-widget-width,var(--spacer-size));--align-self:var(--container-widget-align-self,initial);--flex-shrink:0}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container,.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer,.e-con>.elementor-widget-spacer>.elementor-widget-container,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer{height:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner{height:var(--container-widget-height,var(--spacer-size))}<\/style>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-0f9bd23\" data-id=\"0f9bd23\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d089dc2 elementor-widget elementor-widget-heading\" data-id=\"d089dc2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Ajoutez votre titre ici<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-903b7e2\" data-id=\"903b7e2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d0ffbc5 elementor-widget elementor-widget-image\" data-id=\"d0ffbc5\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.12.0 - 29-03-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.u-bordeaux.fr\/evenements\/exposition-cristallum-quand-les-cristaux-emergent-de-la-chimie-pharmaceutique\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"686\" src=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/1773151122-ccc6f4fbf73274f33255b1ee410ac851.jpg\" class=\"attachment-large size-large wp-image-2066\" alt=\"\" srcset=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/1773151122-ccc6f4fbf73274f33255b1ee410ac851.jpg 960w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/1773151122-ccc6f4fbf73274f33255b1ee410ac851-300x214.jpg 300w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/1773151122-ccc6f4fbf73274f33255b1ee410ac851-768x549.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c64112 elementor-widget elementor-widget-heading\" data-id=\"2c64112\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www.u-bordeaux.fr\/evenements\/exposition-cristallum-quand-les-cristaux-emergent-de-la-chimie-pharmaceutique\">Exposition - Cristallum : quand les cristaux \u00e9mergent de la chimie pharmaceutique<\/a><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-608c4cf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"608c4cf\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-cdb7ff7\" data-id=\"cdb7ff7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5b8a292 elementor-widget elementor-widget-heading\" data-id=\"5b8a292\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><br>Les Journ\u00e9es de l'ABC<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4fa0403\" data-id=\"4fa0403\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-069938e elementor-widget elementor-widget-heading\" data-id=\"069938e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Jeudi 28 (ICMCB) et Vendredi 29 (CRPP) Mai, 2026<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e3fd19 elementor-widget elementor-widget-spacer\" data-id=\"8e3fd19\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09d561d elementor-widget elementor-widget-image\" data-id=\"09d561d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/bordeaux-sante-event.fr\/lart-de-la-joaillerie-moleculaire\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"842\" src=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud-1024x842.jpeg\" class=\"attachment-large size-large wp-image-2026\" alt=\"\" srcset=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud-1024x842.jpeg 1024w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud-300x247.jpeg 300w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud-768x632.jpeg 768w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud-1536x1264.jpeg 1536w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/03\/Bandeau-photographies-cristallographie-Noel-Pinaud.jpeg 1585w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c26fc6b elementor-widget elementor-widget-spacer\" data-id=\"c26fc6b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-88c8c6c elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"88c8c6c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/ehprg2026.org\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"437\" src=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/01\/logo_ehprg2026-768x437.jpg\" class=\"attachment-medium_large size-medium_large wp-image-1559\" alt=\"\" srcset=\"https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/01\/logo_ehprg2026-768x437.jpg 768w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/01\/logo_ehprg2026-300x171.jpg 300w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/01\/logo_ehprg2026-1024x582.jpg 1024w, https:\/\/cristallographie33.fr\/wp-content\/uploads\/2026\/01\/logo_ehprg2026.jpg 1027w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2625e2 elementor-widget elementor-widget-spacer\" data-id=\"a2625e2\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div 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