{"id":11641,"date":"2020-03-10T01:02:59","date_gmt":"2020-03-10T00:02:59","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=11641"},"modified":"2021-05-05T21:22:08","modified_gmt":"2021-05-05T19:22:08","slug":"les-roques-ens-mostren-el-passat","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/les-roques-ens-mostren-el-passat\/","title":{"rendered":"Les roques ens mostren el passat"},"content":{"rendered":"<p>Dilluns 9 de mar\u00e7 els alumnes de 1r de batxillerat de l\u2019optativa de CTMA de l&#8217; <strong>Institut Fort Pius\u00a0<\/strong>i de l&#8217;<strong>Institut Salvador Espriu<\/strong>, tots dos de Barcelona han realitzat una sortida de geologia a Pallej\u00e0, per estudiar diferents afloraments de \u00a0<a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/itinerari-geologic-roques-sedimentaris-batxillera\/\" target=\"_blank\" rel=\"noopener noreferrer\">roques sedimentaries del Tri\u00e0sic<\/a>.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/c332e693-9efd-424a-8862-86f78a3eb181.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-11645 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/c332e693-9efd-424a-8862-86f78a3eb181.jpg\" alt=\"\" width=\"300\" height=\"227\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/c332e693-9efd-424a-8862-86f78a3eb181.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/c332e693-9efd-424a-8862-86f78a3eb181-200x150.jpg 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>S\u2019han dividit en grups i amb el material de camp necessari han comen\u00e7at l\u2019itinerari. Consta de 3 parades en els diferents afloraments, on s\u2019han de realitzar una s\u00e8rie de proves (observaci\u00f3 d\u2019estructures sediment\u00e0ries, la granulometria dels materials, comprovar la duresa del mineral que trobem en la roca, reacci\u00f3 amb\u00a0 HCl per confirmar si cont\u00e9 carbonat de calci) per tal d\u2019identificar la roca observada. Han obtingut dades topogr\u00e0fiques com coordenades UTM i altitud i tamb\u00e9 han calculat el cabussament dels estrats i la pot\u00e8ncia dels afloraments fent servir diverses t\u00e8cniques matem\u00e0tiques.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11646 size-medium alignright\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76-300x267.jpg\" alt=\"\" width=\"300\" height=\"267\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76-300x267.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76-768x683.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76-1024x910.jpg 1024w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/845fb76f-9967-4942-a671-32b493620c76.jpg 1280w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Han comprovat que el primer aflorament correspon a conglomerat amb quarsita i el segon correspon a gres ric en quars. Aquestes dos litologies pertanyen al Buntsandstein, primer estatge del Tri\u00e0sic. S\u00f3n roques rogenques d&#8217;origen continental que reposen sobre un s\u00f2col Paleozoic de pissarres. En l\u2019aflorament superior han identificat calc\u00e0ries i dolomies del Muschelkalk, segon estatge del Tri\u00e0sic, que indica unes condicions de sedimentaci\u00f3 marines.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/muntatge-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-11650 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/muntatge-4.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/muntatge-4.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2020\/03\/muntatge-4-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Amb totes les dades recollides han pogut interpretar l\u2019origen de la seq\u00fc\u00e8ncia, que correspon a una transgressi\u00f3 marina d\u2019una plana al\u00b7luvial i podran elaborar la columna estratigr\u00e0fica corresponent.<\/p>\n<p>En el cam\u00ed de pujada han inspeccionat un antic forn de cal\u00e7 abandonat.<\/p>\n<p>Han completat una feina magn\u00edfica aplicant \u00a0t\u00e8cniques de camp relacionades amb la geologia.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dilluns 9 de mar\u00e7 els alumnes de 1r de batxillerat de l\u2019optativa de CTMA de l&#8217; Institut Fort Pius\u00a0i de l&#8217;Institut Salvador Espriu, tots dos de Barcelona han realitzat una sortida de geologia a Pallej\u00e0, per estudiar diferents afloraments de \u00a0roques sedimentaries del Tri\u00e0sic. S\u2019han dividit en grups i amb el material de camp necessari [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11644,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,29,348],"tags":[],"class_list":["post-11641","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-portada","category-sedimentaries"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/11641","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/comments?post=11641"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/11641\/revisions"}],"predecessor-version":[{"id":11652,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/11641\/revisions\/11652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/11644"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=11641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=11641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=11641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}