{"id":19486,"date":"2024-03-08T09:16:40","date_gmt":"2024-03-08T08:16:40","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=19486"},"modified":"2024-03-08T09:17:08","modified_gmt":"2024-03-08T08:17:08","slug":"entre-les-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/entre-les-escletxes\/","title":{"rendered":"Entre Les Escletxes"},"content":{"rendered":"<p>L&#8217;alumnat de Geologia i Ci\u00e8ncies Ambientals de segon de batxillerat de l&#8217;<a href=\"https:\/\/agora.xtec.cat\/insmartidot\/\">Institut Mart\u00ed Dot<\/a> de Sant Feliu de Llobregat ha vingut dimecres 6 de gener fins a El Papiol per con\u00e8ixer <em>Les Escletxes<\/em> i estudiar els <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/processos-de-vessant-i-riscs-naturals\/\">processos de vessant i els riscos naturals <\/a>associats a aquest fenomen.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-19488 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/03\/1b.jpg\" alt=\"\" width=\"241\" height=\"227\" \/>Nom\u00e9s arribar s&#8217;han situat geogr\u00e0ficament amb el GPS i han diferenciat els materials superiors dels inferiors que es veien a simple vista. Despr\u00e9s, dividits en 2 equips de treball i amb el material que duien a cadascuna de les motxilles de camp, han analitzat la consist\u00e8ncia, la resist\u00e8ncia, la impermeabilitat, la ductilitat i la pres\u00e8ncia de carbonats en ambd\u00f3s materials. Amb l&#8217;ajuda d&#8217;una taula dicot\u00f2mica han identificat els materials superiors com a calc\u00e0ries fossil\u00edferes (amb coralls i bivalves) i els inferiors com a lutites (argiles).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-19489\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/03\/2-4.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/03\/2-4.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/03\/2-4-200x150.jpg 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Despr\u00e9s d&#8217;una pausa per esmorzar han pres diferents mesures de les 5 escletxes principals: direcci\u00f3, inclinaci\u00f3, profunditat i els despla\u00e7aments horitzontal i vertical. Amb totes les dades recollides, analitzant els fen\u00f2mens impulsors i de resist\u00e8ncia, han pogut elaborar un model te\u00f2ric de com s\u2019havien pogut formar, arribant a la seg\u00fcent conclusi\u00f3: com que les roques calc\u00e0ries es degraden a causa de l&#8217;aigua de la pluja, lleugerament \u00e0cida, aquest efecte al llarg de milions d\u2019anys faria que les esquerdes s&#8217;anessin eixamplant i aprofundint fins permetre a l&#8217;aigua arribar a les argiles inferiors. Quan plou, les argiles es tornen fangoses i es comporten de manera pl\u00e0stica. Aix\u00f2 juntament amb el pendent hauria provocat que les calc\u00e0ries llisquessin vessant avall fins a formar el fenomen geol\u00f2gic que veiem avui dia.<\/p>\n<p>Tamb\u00e9 han conegut el fenomen de reptaci\u00f3 o<em> creep<\/em> que afecta alguns arbres de la zona i que presenten una morfologia del tronc visiblement corbada.<\/p>\n<p>Finalment, tenint en compte l&#8217;impacte que t\u00e9 aquest fenomen a les infraestructures del poble del Papiol, han calculat el risc que suposa aquest proc\u00e9s de vessant en la fa\u00e7ana d&#8217;un dels seus edificis tenint en compte el cost dels b\u00e9ns exposats, la vulnerabilitat i la probabilitat dels danys o per\u00edode de retorn.<\/p>\n<p>Han gaudit molt travessant d&#8217;una esquerda a una altra mentre aprenien sobre la geologia i els riscos de vessant. Fins aviat futurs ge\u00f2legs i ge\u00f2logues!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;alumnat de Geologia i Ci\u00e8ncies Ambientals de segon de batxillerat de l&#8217;Institut Mart\u00ed Dot de Sant Feliu de Llobregat ha vingut dimecres 6 de gener fins a El Papiol per con\u00e8ixer Les Escletxes i estudiar els processos de vessant i els riscos naturals associats a aquest fenomen. Nom\u00e9s arribar s&#8217;han situat geogr\u00e0ficament amb el GPS [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":19490,"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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