{"id":10759,"date":"2019-03-25T15:36:53","date_gmt":"2019-03-25T14:36:53","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=10759"},"modified":"2019-03-27T13:57:00","modified_gmt":"2019-03-27T12:57:00","slug":"descobrim-la-historia-geologica-de-les-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/descobrim-la-historia-geologica-de-les-escletxes\/","title":{"rendered":"Descobrim la hist\u00f2ria geol\u00f2gica de les Escletxes"},"content":{"rendered":"<p>Dilluns 25 de mar\u00e7 els alumnes de l\u2019optativa de Geologia de 2n de batxillerat de l\u2019<strong>Institut Joanot Martorell<\/strong> d\u2019Esplugues de Llobregat i l<strong>\u2019Institut Mart\u00ed Dot<\/strong> de Sant Feliu de Llobregat han fet una sortida de camp per investigar la formaci\u00f3 de les <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/processos-de-vessant-i-riscs-naturals\/\" target=\"_blank\" rel=\"noopener\">Escletxes<\/a> i el risc que aquest fenomen genera a la poblaci\u00f3 del Papiol.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6649bis.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10762 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6649bis.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6649bis.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6649bis-200x150.jpg 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Una vegada distribu\u00efts en grups, han seguit les activitats del quadern de treball, on primerament s\u2019han formulat hip\u00f2tesis de l\u2019origen de la formaci\u00f3 de les escletxes i les causes que l&#8217;afecten avui dia.<\/p>\n<p>Un cop situats en el mapa topogr\u00e0fic i despr\u00e8s de l\u2019explicaci\u00f3 pr\u00e8via,\u00a0han anat cap a la zona on trobem els materials inferiors i els superiors i han analitzat e identificat els dos tipus de materials, a partir de la seva composici\u00f3 i caracter\u00edstiques. Amb tota la informaci\u00f3 recopilada han confeccionat una columna estratigr\u00e0fica.<\/p>\n<p>S\u2019ha arribat a la conclusi\u00f3, que el material superior on s\u2019han format les escletxes s\u00f3n calc\u00e0ries massives i que el material interior s\u00f3n argiles.<\/p>\n<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6651bis.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10763 alignright\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2019\/03\/IMG_6651bis.jpg\" alt=\"\" width=\"225\" height=\"300\" \/><\/a>Tot seguit han accedit a l\u2019interior de sis escletxes per prendre mesures d\u2019amplada, despla\u00e7ament vertical i profunditat i han utilitzat la br\u00faixola i el clin\u00f2metre per saber la inclinaci\u00f3 i direcci\u00f3.<\/p>\n<p>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 clivellament \u00a0i \u00a0carstificaci\u00f3 (meteoritzaci\u00f3 de les roques calc\u00e0ries o carbonatades per dissoluci\u00f3) pel qual s\u2019ha infiltrat l\u2019aigua fins els materials inferiors on trobem argiles. La inestabilitat del material tou (argiles) al estar sotmeses a l\u2019aigua 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 anat fins al poble del Papiol per veure les esquerdes que es produeixen en les fa\u00e7anes d&#8217;algunes cases\u00a0 i estimar el risc que els hi suposa, calculant el valor de les reparacions.<\/p>\n<p>Han fet una gran feina de ge\u00f2legs i s\u2019ho han passat molt b\u00e9 endinsant-se en\u00a0 les escletxes!<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dilluns 25 de mar\u00e7 els alumnes de l\u2019optativa de Geologia de 2n de batxillerat de l\u2019Institut Joanot Martorell d\u2019Esplugues de Llobregat i l\u2019Institut Mart\u00ed Dot de Sant Feliu de Llobregat han fet una sortida de camp per investigar la formaci\u00f3 de les Escletxes i el risc que aquest fenomen genera a la poblaci\u00f3 del Papiol. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":10761,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,295,29],"tags":[],"class_list":["post-10759","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-geologia","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/10759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/comments?post=10759"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/10759\/revisions"}],"predecessor-version":[{"id":10776,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/10759\/revisions\/10776"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/10761"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=10759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=10759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=10759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}