{"id":16901,"date":"2023-03-11T20:12:38","date_gmt":"2023-03-11T19:12:38","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16901"},"modified":"2023-03-11T20:12:38","modified_gmt":"2023-03-11T19:12:38","slug":"aprenem-a-identificar-roques-viatjant-en-el-temps","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/aprenem-a-identificar-roques-viatjant-en-el-temps\/","title":{"rendered":"Aprenem a identificar roques  viatjant en el temps"},"content":{"rendered":"<p>Divendres 10 de mar\u00e7 l&#8217;alumnat de 1r de batxillerat de l\u2019optativa de Geologia i Ci\u00e8ncies ambientals de l&#8217; <a href=\"https:\/\/agora.xtec.cat\/iesfmompou\/\" target=\"_blank\" rel=\"noopener\"><strong>Institut Frederic Mompou <\/strong><\/a>de Sant Vicen\u00e7 dels Horts ha realitzat\u00a0 una sortida de geologia\u00a0 per estudiar diferents afloraments de <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><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-16906 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_20230310_165442_842-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_20230310_165442_842.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_20230310_165442_842-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Han arribat a Pallej\u00e0 en transport p\u00fablic i en el punt de trobada s&#8217;han dividit en 3 petits grups i han revisat el material de camp necessari per fer la investigaci\u00f3. Llavors han comen\u00e7at l\u2019itinerari que consta de 3 parades en\u00a0 diferents afloraments. 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. A m\u00e9s, en cada parada han realitzat una s\u00e8rie de proves com observaci\u00f3 d\u2019estructures sediment\u00e0ries, examen de la granulometria dels materials, comprovaci\u00f3 de la duresa del mineral que trobem en la roca i tamb\u00e9 la prova de la reacci\u00f3 amb\u00a0 HCl per confirmar la pres\u00e8ncia de carbonat de calci.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-16908\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_0548-227x300.jpg\" alt=\"\" width=\"227\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_0548-227x300.jpg 227w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/03\/IMG_0548.jpg 378w\" sizes=\"auto, (max-width: 227px) 100vw, 227px\" \/>Han confirmat que el primer aflorament correspon a conglomerat amb quarsita i el segon correspon a gres ric en quars. Aquestes dos litologies pertanyen al\u00a0 primer estatge del Tri\u00e0sic. <span style=\"font-family: inherit; font-size: 1em;\">S\u00f3n roques rogenques d&#8217;origen continental corresponents a ambients sedimentaris al\u00b7luvials de graves i sorres que reposen sobre un s\u00f2col Paleozoic de pissarres. En l\u2019aflorament superior han identificat calc\u00e0ries i dolomies corresponents al segon estatge del Tri\u00e0sic <\/span><span style=\"font-family: inherit; font-size: 1em;\">que indiquen unes condicions de sedimentaci\u00f3 marines.<br \/>\n<\/span><\/p>\n<p>Amb totes les dades recollides han pogut interpretar l\u2019origen de la seq\u00fc\u00e8ncia, que correspon a una transgressi\u00f3 marina sobre una plana al\u00b7luvial. En el cam\u00ed de retorn han inspeccionat un antic forn de cal\u00e7 i han conegut el proc\u00e9s per obtenir aquest producte.<\/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>Divendres 10 de mar\u00e7 l&#8217;alumnat de 1r de batxillerat de l\u2019optativa de Geologia i Ci\u00e8ncies ambientals de l&#8217; Institut Frederic Mompou de Sant Vicen\u00e7 dels Horts ha realitzat\u00a0 una sortida de geologia\u00a0 per estudiar diferents afloraments de roques sedimentaries del Tri\u00e0sic. Han arribat a Pallej\u00e0 en transport p\u00fablic i en el punt de trobada s&#8217;han [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":16910,"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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