{"id":21328,"date":"2024-11-08T15:52:44","date_gmt":"2024-11-08T14:52:44","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=21328"},"modified":"2024-11-13T14:41:19","modified_gmt":"2024-11-13T13:41:19","slug":"investigant-les-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/investigant-les-escletxes\/","title":{"rendered":"Investigant les Escletxes"},"content":{"rendered":"<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-21367 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/3-225x300.jpg\" alt=\"\" width=\"209\" height=\"279\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/3-225x300.jpg 225w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/3.jpg 450w\" sizes=\"auto, (max-width: 209px) 100vw, 209px\" \/>L&#8217;alumnat de Geologia i Ci\u00e8ncies Ambientals de segon de batxillerat de l&#8217;<a href=\"https:\/\/insernestlluch.cat\/\">Institut Ernest Lluch<\/a> de Barcelona i de l&#8217;<a href=\"https:\/\/agora.xtec.cat\/iessert\/\">Institut Josep Llu\u00eds Sert<\/a> de Castelldefels ha vingut divendres 8 de novembre de 2024 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 riscs geol\u00f2gics naturals <\/a>associats a aquest fenomen.<\/p>\n<p style=\"text-align: justify;\">Nom\u00e9s arribar s&#8217;han situat geogr\u00e0ficament amb el GPS, han copsat el relleu de la zona i han diferenciat els materials superiors dels inferiors que es veien a simple vista. Despr\u00e9s, dividits en 4 equips de treball i amb el material que duien a cadascuna de les motxilles de camp (martell de ge\u00f2leg, \u00e0cid clorh\u00eddric i aigua), 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 i els inferiors com a lutites.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-21414\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/muntatge-2-229x300.jpg\" alt=\"\" width=\"229\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/muntatge-2-229x300.jpg 229w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/muntatge-2.jpg 305w\" sizes=\"auto, (max-width: 229px) 100vw, 229px\" \/>Despr\u00e9s d&#8217;una pausa per esmorzar han pres diferents mesures de les 6 escletxes principals: direcci\u00f3, inclinaci\u00f3 de les parets, 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 style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-21366 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/2-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/2-225x300.jpg 225w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/11\/2.jpg 450w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/p>\n<p style=\"text-align: justify;\">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 per les fa\u00e7anes de les cases i altres construccions, tenint en compte el cost dels b\u00e9ns\u00a0exposats, la vulnerabilitat i la probabilitat dels danys o per\u00edode de retorn.<\/p>\n<p style=\"text-align: justify;\">Finalment, 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 provocada per la inestabilitat del tal\u00fas i la gravetat.<\/p>\n<p style=\"text-align: justify;\">Han gaudit molt passant d&#8217;una esquerda a una altra mentre aprenien sobre geologia i possibles 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 Ernest Lluch de Barcelona i de l&#8217;Institut Josep Llu\u00eds Sert de Castelldefels ha vingut divendres 8 de novembre de 2024 fins a El Papiol per con\u00e8ixer Les Escletxes i estudiar els processos de vessant i els riscs geol\u00f2gics naturals associats a aquest fenomen. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":21364,"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-21328","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\/21328","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=21328"}],"version-history":[{"count":6,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/21328\/revisions"}],"predecessor-version":[{"id":21415,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/21328\/revisions\/21415"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/21364"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=21328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=21328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=21328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}