{"id":24830,"date":"2026-02-05T10:06:09","date_gmt":"2026-02-05T09:06:09","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=24830"},"modified":"2026-02-05T11:07:06","modified_gmt":"2026-02-05T10:07:06","slug":"infiltracio-a-les-calcaries-el-poder-de-la-pluja-acida","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/infiltracio-a-les-calcaries-el-poder-de-la-pluja-acida\/","title":{"rendered":"Infiltraci\u00f3 a les calc\u00e0ries, el poder de la pluja \u00e0cida"},"content":{"rendered":"

Avui dia 4 de febrer de 2026 l’alumnat de 1r de batxillerat de les mat\u00e8ries de Reptes de Biologia i Geologia i de Geologia i Ci\u00e8ncies Ambientals de l’institut de Premi\u00e0 de Mar<\/a> s’ha infiltrat com pluja \u00e0cida per les escletxes i ha esquerdat el coneixement! Quina colla d’investigadors i investigadores han sobreviscut a Les escletxes del Papiol<\/a>\u00a0i han realitzat una tasca de caracteritzaci\u00f3 dels riscos geol\u00f2gics de la zona.<\/p>\n

En primer lloc han reflexionat i formulat diverses hip\u00f2tesis al voltant d\u2019aquesta formaci\u00f3 geol\u00f2gica integrada dins la Serra de Collserola catalogada com a ge\u00f2top d\u2019inter\u00e8s<\/a>. A continuaci\u00f3 l\u2019han 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. Agrupats en 6 equips de treball i amb el material que els hem proporcionat (martell de ge\u00f2leg, ulleres de protecci\u00f3, \u00e0cid clorh\u00eddric i aigua)\u00a0\u00a0han treballat de valent per analitzar la consist\u00e8ncia, la resist\u00e8ncia, la impermeabilitat, la ductilitat i la pres\u00e8ncia de carbonats en ambd\u00f3s materials. Ni els ha calgut la clau dicot\u00f2mica per identificar els materials superiors com a calc\u00e0ries fossil\u00edferes (amb coralls i conquilles) i els inferiors com a lutites (argiles). Tamb\u00e9 han vist com representar aquest informaci\u00f3 en una columna estratigr\u00e0fica.<\/p>\n\r\n\t

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    Despr\u00e9s d\u2019una pausa per esmorzar s\u2019han posat el casc de protecci\u00f3 i s\u2019han endinsat en 6 escletxes principals per prendre diferents mesures: direcci\u00f3, inclinaci\u00f3 de les parets, profunditat i despla\u00e7aments (horitzontal i vertical). Amb totes les dades recollides\u00a0 han pogut elaborar un model te\u00f2ric de com s\u2019havien pogut formar aquestes cingleres tan peculiars. Entre tots han arribat a la seg\u00fcent conclusi\u00f3: com que les roques calc\u00e0ries es degraden a causa de l\u2019aigua de la pluja (lleugerament \u00e0cida), al llarg de milions d\u2019anys s\u2019han anat esquerdant completament fins a les argiles inferiors. Quan plou, l\u2019aigua s\u2019infiltra fins a les argiles, es tornen fangoses i es comporten de manera pl\u00e0stica. Aix\u00f2, juntament amb el pendent del vessant, hauria provocat que les calc\u00e0ries llisquessin vessant avall fins a formar el fenomen geol\u00f2gic que veiem avui dia.<\/p>\n

    Tenint en compte l\u2019impacte que t\u00e9 aquest fenomen natural a les infraestructures del poble del Papiol, han valorat 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 exposats, la vulnerabilitat i la probabilitat dels danys o per\u00edode de retorn (perillositat).<\/p>\n

    Han gaudit molt passant d\u2019una esquerda a una altra mentre aprenien sobre geologia.<\/p>\n

    Han sigut uns\u00a0 investigadors\/es formidables! L\u2019enhorabona per la feina feta! Fins ben aviat futurs cient\u00edfics!<\/p>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    Avui dia 4 de febrer de 2026 l’alumnat de 1r de batxillerat de les mat\u00e8ries de Reptes de Biologia i Geologia i de Geologia i Ci\u00e8ncies Ambientals de l’institut de Premi\u00e0 de Mar s’ha infiltrat com pluja \u00e0cida per les escletxes i ha esquerdat el coneixement! Quina colla d’investigadors i investigadores han sobreviscut a Les […]<\/p>\n","protected":false},"author":3,"featured_media":24846,"comment_status":"open","ping_status":"open","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 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":[395,393,399,412,1,29],"tags":[],"class_list":["post-24830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aprendreambelscampsientorns","category-campsientornsdaprenentatge","category-projectecda","category-escletxes","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/24830","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=24830"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/24830\/revisions"}],"predecessor-version":[{"id":24848,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/24830\/revisions\/24848"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/24846"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=24830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=24830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=24830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}