{"id":21688,"date":"2024-12-11T09:15:36","date_gmt":"2024-12-11T08:15:36","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=21688"},"modified":"2025-01-10T12:23:15","modified_gmt":"2025-01-10T11:23:15","slug":"linstitut-les-corts-entre-escletxes","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/linstitut-les-corts-entre-escletxes\/","title":{"rendered":"L&#8217;Institut Les Corts entre escletxes"},"content":{"rendered":"<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-21691\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/1-4-225x300.jpg\" alt=\"\" width=\"272\" height=\"363\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/1-4-225x300.jpg 225w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/1-4.jpg 450w\" sizes=\"auto, (max-width: 272px) 100vw, 272px\" \/>Avui, dia 10 de desembre de 2024, l&#8217;alumnat de 4t d&#8217;ESO de l&#8217;<a href=\"https:\/\/agora.xtec.cat\/ieslescorts\/\">Institut Les Corts <\/a>de Barcelona s&#8217;ha endinsat 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\u00a0vermell\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 style=\"text-align: justify;\">Un cop all\u00e0, han fet tot un seguit de proves a ambdues roques: han comprovat la seva consist\u00e8ncia, la resist\u00e8ncia, la plasticitat, la permeabilitat i tamb\u00e9 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. A m\u00e9s, gr\u00e0cies a l&#8217;observaci\u00f3 d&#8217;alguns f\u00f2ssils marins (ostres i altres bivalves, coralls, etc.), han pogut deduir que les roques calc\u00e0ries tenen un origen mar\u00ed.<\/p>\n<p style=\"text-align: justify;\">Despr\u00e9s d&#8217;esmorzar, s\u2019han pogut endinsar a 4 de les escletxes on han mesurat la direcci\u00f3, l\u2019amplada i la profunditat de cadascuna d&#8217;elles. La gran majoria han gaudit travessant escletxes realment estretes com si fossin veritables espele\u00f2legs\/espele\u00f2logues!<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-21695 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/4-2-230x300.jpg\" alt=\"\" width=\"260\" height=\"339\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/4-2-230x300.jpg 230w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2024\/12\/4-2.jpg 459w\" sizes=\"auto, (max-width: 260px) 100vw, 260px\" \/>Per concloure, han posat en com\u00fa les dades de tots els grups i han dedu\u00eft com s&#8217;havien format Les Escletxes. 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. Juntament amb el pendent del vessant, aquest fet hauria provocat que els blocs de roca calc\u00e0ria llisquessin vessant avall fins a formar el fenomen geol\u00f2gic que veiem avui dia.<\/p>\n<p style=\"font-weight: 400; text-align: justify;\">Finalment han jugat al joc de les sis difer\u00e8ncies per con\u00e8ixer la problem\u00e0tica de les cases del Papiol, que sovint tamb\u00e9 es troben afectades per esquerdes a les fa\u00e7anes, i han descobert diverses solucions per evitar l\u2019aparici\u00f3 d\u2019aquestes. Han arribat a la conclusi\u00f3 que no qualsevol terreny \u00e9s apte per construir-hi o, si m\u00e9s no, caldr\u00e0 adaptar el tipus de construcci\u00f3 segons la zona. Aix\u00ed doncs, han vist que la comprensi\u00f3 dels processos geol\u00f2gics \u00e9s de gran import\u00e0ncia social, sobretot a l&#8217;hora de minimitzar riscos i planificar l&#8217;\u00fas del territori correctament.<\/p>\n<p><span style=\"font-family: inherit; font-size: 1em; text-align: justify;\">Heu fet una gran tasca, fins ben aviat!<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avui, dia 10 de desembre de 2024, l&#8217;alumnat de 4t d&#8217;ESO de l&#8217;Institut Les Corts de Barcelona s&#8217;ha endinsat 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 es podien distingir dos materials ben [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":21689,"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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