{"id":16203,"date":"2022-12-05T09:56:04","date_gmt":"2022-12-05T08:56:04","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16203"},"modified":"2022-12-05T09:56:04","modified_gmt":"2022-12-05T08:56:04","slug":"les-esquerdes-del-vilumara","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/les-esquerdes-del-vilumara\/","title":{"rendered":"Les esquerdes del Vilumara"},"content":{"rendered":"<p>La classe de 1r B de l&#8217;<strong><a href=\"https:\/\/agora.xtec.cat\/inscanvilumara\/\">Institut Can Vilumara<\/a>\u00a0 <\/strong>de L&#8217;Hospitalet de Llobregat\u00a0 ha vingut divendres 2 de desembre a El Papiol per investigat les roques sediment\u00e0ries i el fenomen de les <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/les-escletxes-i-els-riscs-geologics\/\" target=\"_blank\" rel=\"noopener\">Escletxes del Papiol<\/a> . Tot i el fred han completat una gran feina com a ge\u00f2legs!.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-16211 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/muntatge2.jpg\" alt=\"\" width=\"255\" height=\"300\" \/>Per comen\u00e7ar han comentat diversos aspectes del relleu de la zona, com els diferents materials que podien distingir: un de superior de color blanquin\u00f3s i un d\u2019inferior vermell\u00f3s. Tamb\u00e9 han observat que la zona d&#8217;estudi es situa en un vessant. Seguidament, s&#8217;han posat el casc de ge\u00f2leg, i, per grups, han revisat el material necessari per investigar: martell de ge\u00f2leg, cinta m\u00e8trica, br\u00faixola i \u00e0cid clorh\u00eddric. Amb tot preparat, han anat a estudiar els dos materials.<\/p>\n<p>Per descobrir de quins materials es tractava, han fet un seguit de proves en ambdues roques, com comprovar la consist\u00e8ncia, la permeabilitat o veure si reaccionava amb l\u2019\u00e0cid clorh\u00eddric. Han confirmat que el material superior s\u00f3n roques calc\u00e0ries i l\u2019inferior s\u00f3n argiles.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-16210\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/muntatge-1-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/muntatge-1.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/muntatge-1-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>A continuaci\u00f3 s\u2019han endinsat en 4 escletxes i han mesurat la direcci\u00f3, l\u2019amplada i la profunditat de cadascuna. Han travessat algunes escletxes realment estretes. S&#8217;ho han passat d&#8217;all\u00f2 m\u00e9s b\u00e9!<\/p>\n<p>Per concloure, han posat en com\u00fa les dades de tots els grups i han acabat deduint com s&#8217;han format Les Escletxes. Han arribat a la seg\u00fcent conclusi\u00f3: com qu\u00e8 les roques calc\u00e0ries es degraden a causa de la lleugera acidesa de l&#8217;aigua de pluja, aquest efecte durant milions d\u2019anys ha provocat que les esquerdes de les roques calc\u00e0ries s&#8217;anessin fent m\u00e9s grans i profundes fins a permetre a l&#8217;aigua infiltrar-se fins a les argiles inferiors. Com l&#8217;aigua fa que es tornin toves, aix\u00f2 juntament amb el pendent ha provocat que les calc\u00e0ries llisquin vessant avall fins a formar les Escletxes que veiem avui dia.<\/p>\n<p>Per finalitzar han valorat el risc que aquest fenomen de vessant suposa per les cases d&#8217; El Papiol i han proposat mesures per reduir aquest risc .<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La classe de 1r B de l&#8217;Institut Can Vilumara\u00a0 de L&#8217;Hospitalet de Llobregat\u00a0 ha vingut divendres 2 de desembre a El Papiol per investigat les roques sediment\u00e0ries i el fenomen de les Escletxes del Papiol . Tot i el fred han completat una gran feina com a ge\u00f2legs!. Per comen\u00e7ar han comentat diversos aspectes del [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":16208,"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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