{"id":23497,"date":"2025-05-28T11:12:25","date_gmt":"2025-05-28T09:12:25","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=23497"},"modified":"2025-05-29T10:32:29","modified_gmt":"2025-05-29T08:32:29","slug":"esclexarts","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/esclexarts\/","title":{"rendered":"EscletxARTS"},"content":{"rendered":"<p style=\"text-align: justify;\">Dimarts 27 de maig de 2025, l&#8217;alumnat de 4t d&#8217;ESO de l&#8217;<a href=\"https:\/\/www.iearts.cat\/\">Institut Escola ARTS <\/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. De bon mat\u00ed, han comen\u00e7at l&#8217;activitat amb una breu descripci\u00f3 de la zona. Despr\u00e9s d&#8217;observar l&#8217;entorn, 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 determinar 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 un casc de protecci\u00f3 i s&#8217;han apropat a la zona d&#8217;estudi.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-23502 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge1-300x198.jpg\" alt=\"\" width=\"300\" height=\"198\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge1-300x198.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge1.jpg 453w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Un cop all\u00e0, han fet tot un seguit de proves a ambd\u00f3s materials: 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 confirmar que les roques calc\u00e0ries tenen un origen mar\u00ed. Sembla doncs que el nivell del mar no sempre ha sigut el mateix que veiem ara!<\/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. Tots han gaudit travessant escletxes realment estretes com si fessin una aut\u00e8ntica ruta espeleol\u00f2gica!<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-23503\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge2-1-224x300.jpg\" alt=\"\" width=\"224\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge2-1-224x300.jpg 224w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/05\/muntatge2-1.jpg 449w\" sizes=\"auto, (max-width: 224px) 100vw, 224px\" \/><\/p>\n<p style=\"text-align: justify;\">Per concloure, han posat en com\u00fa les dades de tots els grups i han acabat deduint 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 difer\u00e8ncies per comprendre millor la problem\u00e0tica de les cases del Papiol, que sovint tamb\u00e9 es troben afectades per esquerdes a les fa\u00e7anes. Han descobert diverses solucions per evitar l\u2019aparici\u00f3 d\u2019aquestes i han arribat a la conclusi\u00f3 que no tots els terrenys s\u00f3n aptes 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 tamb\u00e9 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;\">Enhorabona per la feina feta, heu sigut un grup molt treballador! Us esperem ben aviat!<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dimarts 27 de maig de 2025, l&#8217;alumnat de 4t d&#8217;ESO de l&#8217;Institut Escola ARTS 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. De bon mat\u00ed, han comen\u00e7at l&#8217;activitat amb una breu descripci\u00f3 de la zona. Despr\u00e9s d&#8217;observar l&#8217;entorn, han concl\u00f2s que es [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":23501,"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":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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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