{"id":10574,"date":"2019-02-11T15:31:34","date_gmt":"2019-02-11T14:31:34","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=10574"},"modified":"2019-02-11T15:31:34","modified_gmt":"2019-02-11T14:31:34","slug":"investiguem-les-escletxes-per-dins","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/investiguem-les-escletxes-per-dins\/","title":{"rendered":"Investiguem les Escletxes per dins"},"content":{"rendered":"<p>Dimecres 6 de febrer els alumnes de l&#8217;optativa de Geologia de 2n de batxillerat de l&#8217;<strong>Institut Llu\u00eds de Requesens<\/strong> de Molins de Rei i l&#8217;<strong>Institut Frederic Mompou<\/strong> de Sant Vicen\u00e7 dels Horts, han fet una sortida de camp per investigar la <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/processos-de-vessant-i-riscs-naturals\/\">geologia de la formaci\u00f3 de les Escletxes, els fen\u00f2mens de vessant<\/a> que es produeixen i el risc que afecta a la poblaci\u00f3 del Papiol.<\/p>\n<p>Han comen\u00e7at formulant hip\u00f2tesis de com s\u2019han pogut formar les Escletxes, i de perqu\u00e8 se n\u2019han format en aquesta zona i no en una altra. A continuaci\u00f3 s&#8217;han dividit en grups i \u00a0han revisat el material per poder treballar.<a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/muntatge-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10576 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/muntatge-5.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/muntatge-5.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/muntatge-5-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Primer han pogut veure e identificar els dos tipus de materials que tenim aflorant a la zona, a partir de la seva composici\u00f3 i caracter\u00edstiques. Tamb\u00e9 han confeccionat una columna estratigr\u00e0fica i s&#8217;ha pogut observar que tenim un material diferent en el s\u00f2col, tot i \u00a0que no el trobem aflorant.<\/p>\n<p>Tot seguit, han accedit a l&#8217;interior de sis escletxes per estudiar-les prenent mesures d&#8217;amplada, despla\u00e7ament vertical i profunditat ( amb una cinta m\u00e8trica) i han utilitzat la br\u00faixola i el clin\u00f2metre per saber la inclinaci\u00f3 i direcci\u00f3.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/picant2Bis.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10577 alignright\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/02\/picant2Bis.jpg\" alt=\"\" width=\"300\" height=\"235\" \/><\/a>Un cop posades en com\u00fa totes les dades han dedu\u00eft les causes i el proc\u00e9s de formaci\u00f3. Han arribat a la conclusi\u00f3 que les roques superficials on es troben les escletxes s\u00f3n calc\u00e0ries que han patit un proc\u00e9s de carstificaci\u00f3 (meteoritzaci\u00f3 de les roques calc\u00e0ries o carbonatades per dissoluci\u00f3) pel qual s&#8217;ha infiltrat l&#8217;aigua fins els materials inferiors on trobem argiles. La inestabilitat del material tou (argiles) al estar sotmeses a l&#8217;aigua que percola, i la inclinaci\u00f3 del vessant han provocat el lliscament de les calc\u00e0ries i el progressiu eixamplament de les esquerdes fins a formar les escletxes actuals.<\/p>\n<p>Finalment han fet un recorregut pels carrers del Papiol, observant les esquerdes que presenten algunes cases i valorant el cos que suposaria aplicar una mesura directa.<\/p>\n<p>Han fet una gran feina com a ge\u00f2legs!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dimecres 6 de febrer els alumnes de l&#8217;optativa de Geologia de 2n de batxillerat de l&#8217;Institut Llu\u00eds de Requesens de Molins de Rei i l&#8217;Institut Frederic Mompou de Sant Vicen\u00e7 dels Horts, han fet una sortida de camp per investigar la geologia de la formaci\u00f3 de les Escletxes, els fen\u00f2mens de vessant que es produeixen [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":10575,"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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