{"id":18902,"date":"2023-12-15T15:12:31","date_gmt":"2023-12-15T14:12:31","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=18902"},"modified":"2023-12-15T15:14:28","modified_gmt":"2023-12-15T14:14:28","slug":"investiguem-les-roques-sedimentaries-del-triasic-de-palleja","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/investiguem-les-roques-sedimentaries-del-triasic-de-palleja\/","title":{"rendered":"Investiguem les roques sediment\u00e0ries del Tri\u00e0sic de Pallej\u00e0"},"content":{"rendered":"<p><span style=\"font-family: inherit; font-size: 1em;\">L&#8217;alumnat de 4t d&#8217;ESO de l\u2019<\/span><a href=\"https:\/\/agora.xtec.cat\/insmontpedros\/\">Institut Montpedr\u00f3s<\/a><span style=\"font-family: inherit; font-size: 1em;\"> de Santa Coloma de Cervell\u00f3 ha vingut aquest dijous 14 de desembre fins a Pallej\u00e0 per estudiar, a partir de tres afloraments diferents, <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/itinerari-geologic-roques-ambient-sedimentaris-eso\/\">les roques sediment\u00e0ries<\/a> i reconstruir tant la hist\u00f2ria geol\u00f2gica d&#8217;aquests dip\u00f2sits com els seus ambients.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-18916 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/muntatge-1-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/muntatge-1-300x300.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/muntatge-1-150x150.jpg 150w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/muntatge-1.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>L\u2019activitat est\u00e0 plantejada com un itinerari i consta de 3 parades. En cadascuna d&#8217;elles han pres nota de les coordenades UTM, l\u2019altitud i, a partir una s\u00e8rie de proves anal\u00edtiques, han aconseguit identificar les diferents roques sediment\u00e0ries que han anat trobant, ajudant-se d&#8217;una clau dicot\u00f2mica. Han mesurat la pot\u00e8ncia, la granulometria, les estructures sediment\u00e0ries observables en els materials, la seva duresa i fins i tot han atacat cada mostra amb HCl dilu\u00eft, per detectar-hi la pres\u00e8ncia de carbonat de calci.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-18904\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/2-5-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/2-5-225x300.jpg 225w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/12\/2-5.jpg 300w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/>Amb totes aquestes dades han concl\u00f2s que el primer aflorament corresponia a un conglomerat i el segon a un gres. Aquestes dues roques rogenques d\u2019origen continental corresponen a ambients sedimentaris al\u00b7luvials del Tri\u00e0sic inferior. En canvi, en l\u2019aflorament superior han identificat calc\u00e0ries i dolomies, que indicaven unes condicions de sedimentaci\u00f3 marines. D\u2019aquesta manera han pogut confirmar la transgressi\u00f3 marina que hi va tenir lloc en aquella \u00e8poca i reconstruir la hist\u00f2ria geol\u00f2gica a partir del principi de superposici\u00f3 dels estrats.<\/p>\n<p>Han completat una gran feina de camp i han gaudit d&#8217;una manera diferent de la geologia.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;alumnat de 4t d&#8217;ESO de l\u2019Institut Montpedr\u00f3s de Santa Coloma de Cervell\u00f3 ha vingut aquest dijous 14 de desembre fins a Pallej\u00e0 per estudiar, a partir de tres afloraments diferents, les roques sediment\u00e0ries i reconstruir tant la hist\u00f2ria geol\u00f2gica d&#8217;aquests dip\u00f2sits com els seus ambients. L\u2019activitat est\u00e0 plantejada com un itinerari i consta de 3 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":18918,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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