{"id":17318,"date":"2023-04-26T15:03:31","date_gmt":"2023-04-26T13:03:31","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=17318"},"modified":"2023-11-29T16:04:04","modified_gmt":"2023-11-29T15:04:04","slug":"desenterrant-el-passat-de-les-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/desenterrant-el-passat-de-les-escletxes\/","title":{"rendered":"Desenterrant el passat de Les Escletxes"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-17332 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/04\/munt-5-300x300.jpg\" alt=\"\" width=\"413\" height=\"413\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/04\/munt-5.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/04\/munt-5-150x150.jpg 150w\" sizes=\"auto, (max-width: 413px) 100vw, 413px\" \/>Aquest mat\u00ed del dia 26 d&#8217;abril, els\/les alumnes de 4t d&#8217;ESO de l&#8217;<a href=\"http:\/\/iesffg.cat\/\">Institut Francesc Ferrer i Gu\u00e0rdia<\/a> de Sant Joan Desp\u00ed han vingut a endinsar-se a <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/geologia\/les-escletxes-i-els-riscs-geologics\/\">Les Escletxes del Papiol<\/a> per tal d&#8217;investigar i entendre el fenomen geol\u00f2gic que les ha originat. Han comen\u00e7at l&#8217;activitat amb una breu explicaci\u00f3 en la que han concl\u00f2s que es podien distingir dos materials ben diferents a simple vista: un de superior de color m\u00e9s clar i un d\u2019inferior m\u00e9s vermell\u00f3s. Per poder observar les seves propietats han agafat les seves motxilles amb el material necessari (martell de ge\u00f2leg, cinta m\u00e8trica, br\u00faixola, ulleres de protecci\u00f3 i \u00e0cid clorh\u00eddric dilu\u00eft), s&#8217;han posat el casc de ge\u00f2leg i s&#8217;han apropat a la zona d&#8217;estudi.<\/p>\n<p>Un cop all\u00e0 li han fet tot un seguit de proves a ambdues roques: han comprovat la seva consist\u00e8ncia, la permeabilitat i han vist 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 i que els materials inferiors eren argiles continentals.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-17320\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/04\/2-8.jpg\" alt=\"\" width=\"414\" height=\"232\" \/>Despr\u00e9s d&#8217;esmor\u00e7ar 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 veritables espele\u00f2legs\/espele\u00f2logues i han gaudit molt!<\/p>\n<p>Per concloure, han posat en com\u00fa les dades de tots els grups i han acabat deduint com s&#8217;havien format Les Escletxes. Han arribat 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 de les roques calc\u00e0ries 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>Heu fet una gran tasca, fins ben aviat!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aquest mat\u00ed del dia 26 d&#8217;abril, els\/les alumnes de 4t d&#8217;ESO de l&#8217;Institut Francesc Ferrer i Gu\u00e0rdia de Sant Joan Desp\u00ed han vingut a endinsar-se a Les Escletxes del Papiol per tal d&#8217;investigar i entendre el fenomen geol\u00f2gic que les ha originat. Han comen\u00e7at l&#8217;activitat amb una breu explicaci\u00f3 en la que han concl\u00f2s que [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":17319,"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":[395,393,399,397,412,1,29],"tags":[],"class_list":["post-17318","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aprendreambelscampsientorns","category-campsientornsdaprenentatge","category-projectecda","category-sortidacda","category-escletxes","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/17318","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=17318"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/17318\/revisions"}],"predecessor-version":[{"id":17340,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/17318\/revisions\/17340"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/17319"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=17318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=17318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=17318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}