{"id":20325,"date":"2024-05-30T14:50:06","date_gmt":"2024-05-30T12:50:06","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=20325"},"modified":"2024-05-30T14:50:06","modified_gmt":"2024-05-30T12:50:06","slug":"tinc-neura-de-sedis","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/tinc-neura-de-sedis\/","title":{"rendered":"Tinc neura de \u201csedis\u201d"},"content":{"rendered":"

\"\"Les alumnes de 1r de Batxillerat de l\u2019Institut Fort Pius<\/a> de Barcelona han vingut aquest dimecres 29 de maig fins a Pallej\u00e0 per estudiar, a partir de tres afloraments diferents, les roques sediment\u00e0ries del Tri\u00e0sic<\/a> i reconstruir tant la hist\u00f2ria geol\u00f2gica d\u2019aquests dip\u00f2sits com els seus ambients sedimentaris.<\/p>\n

L\u2019activitat est\u00e0 plantejada com un itinerari i consta de 3 parades. En cadascuna d\u2019elles han pres nota de les coordenades UTM, de 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\u2019una 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 al 10% per detectar-hi la pres\u00e8ncia de carbonat de calci.<\/p>\n

\"\"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 roques 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

Han completat una gran feina de camp i han gaudit d\u2019una manera diferent de la geologia. Fins aviat!<\/p>\n","protected":false},"excerpt":{"rendered":"

Les alumnes de 1r de Batxillerat de l\u2019Institut Fort Pius de Barcelona han vingut aquest dimecres 29 de maig fins a Pallej\u00e0 per estudiar, a partir de tres afloraments diferents, les roques sediment\u00e0ries del Tri\u00e0sic i reconstruir tant la hist\u00f2ria geol\u00f2gica d\u2019aquests dip\u00f2sits com els seus ambients sedimentaris. L\u2019activitat est\u00e0 plantejada com un itinerari i […]<\/p>\n","protected":false},"author":3,"featured_media":20334,"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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