{"id":16244,"date":"2022-12-12T16:34:34","date_gmt":"2022-12-12T15:34:34","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16244"},"modified":"2022-12-12T16:34:34","modified_gmt":"2022-12-12T15:34:34","slug":"els-pitufos-del-vilumara-investiguen-les-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/els-pitufos-del-vilumara-investiguen-les-escletxes\/","title":{"rendered":"Els &#8220;pitufos&#8221; del Vilumara investiguen Les Escletxes"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-16246 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/20221212_121808BIS.jpg\" alt=\"\" width=\"314\" height=\"176\" \/>Dilluns 12 de desembre la classe de 1r C de l&#8217;<a href=\"https:\/\/agora.xtec.cat\/inscanvilumara\/\">Institut Can Vilumara<\/a> de L&#8217;Hospitalet de Llobregat ha vingut a investigar les roques que es troben a <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/les-escletxes-i-els-riscs-geologics\/\">Les Escletxes del Papiol<\/a>.<\/p>\n<p>Per comen\u00e7ar han observat els diferents materials que podien distingir a simple vista: un de superior de color m\u00e9s clar i un d\u2019inferior m\u00e9s vermell\u00f3s. Han sabut situar-se en el vessant de la zona d&#8217;estudi, s&#8217;han posat el casc de ge\u00f2leg, han arreplegat el material necessari per investigar: martell de ge\u00f2leg, cinta m\u00e8trica, br\u00faixola, ulleres de protecci\u00f3 i \u00e0cid clorh\u00eddric i s&#8217;han apropat per estudiar ambd\u00f3s materials.<\/p>\n<p>Per descobrir de quins materials es tractava han fet tot un seguit de proves a ambdues roques: comprovar la seva consist\u00e8ncia, la permeabilitat i veure si reaccionaven amb l\u2019\u00e0cid clorh\u00eddric, per constatar la pres\u00e8ncia de carbonat c\u00e0lcic. Finalment han confirmat que el material superior estava format per roques calc\u00e0ries que contenien f\u00f2ssils marins i que els materials inferiors eren argiles continentals.<\/p>\n<p>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 com si fossin espele\u00f2legs i s&#8217;ho han passat d&#8217;all\u00f2 m\u00e9s b\u00e9!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-16251\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/IMG_20221212_152213_212muntatge-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/IMG_20221212_152213_212muntatge.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2022\/12\/IMG_20221212_152213_212muntatge-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Per concloure, s&#8217;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 l&#8217;aigua de la pluja, lleugerament \u00e0cida, aquest efecte durant milions d\u2019anys ha provocat que les esquerdes de les roques calc\u00e0ries s&#8217;anessin eixamplant i aprofundint fins permetre a l&#8217;aigua arribar a les argiles inferiors. Com les argiles s\u00f3n impermeables, l&#8217;aigua fa que es tornin toves, i aix\u00f2 juntament amb el pendent ha provocat que les calc\u00e0ries llisquin vessant avall fins a formar el fenomen geol\u00f2gic que veiem avui dia.<\/p>\n<p>Per finalitzar han valorat el risc que aquest moviment de massa suposa per les cases d&#8217;El Papiol i han proposat mesures per reduir aquest risc. Heu fet una gran tasca!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dilluns 12 de desembre la classe de 1r C de l&#8217;Institut Can Vilumara de L&#8217;Hospitalet de Llobregat ha vingut a investigar les roques que es troben a Les Escletxes del Papiol. Per comen\u00e7ar han observat els diferents materials que podien distingir a simple vista: un de superior de color m\u00e9s clar i un d\u2019inferior m\u00e9s [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":16247,"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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