{"id":8399,"date":"2016-04-01T09:23:00","date_gmt":"2016-04-01T08:23:00","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/general\/de-malpas-a-erillcastell\/"},"modified":"2016-07-11T10:15:54","modified_gmt":"2016-07-11T09:15:54","slug":"de-malpas-a-erillcastell","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/general\/de-malpas-a-erillcastell\/","title":{"rendered":"De Malp\u00e0s a Erillcastell"},"content":{"rendered":"

IES Lladonosa, Lleida<\/span><\/strong><\/p>\n

\"reillcastell\"<\/p>\n

Erillcastell<\/b> \u00e9s un poble de la comarca de l’Alta Ribagor\u00e7a<\/a>, i pertany al terme municipal del Pont de Suert<\/a>. Antigament pertanyia al terme municipal de Malp\u00e0s<\/a>. Des de sempre, Erillcastell ha tingut un acc\u00e9s dif\u00edcil, que s’ha agreujat en quedar deshabitat.<\/p>\n

Erillcastell t\u00e9 una identitat hist\u00f2rica<\/b> molt important, lligat amb l’antiguitat de la fam\u00edlia d’Erill. El castell est\u00e0 datat el 1024, i va ser donat als Erill el 1040. El primer membre conegut va ser Ramon I d’Erill, documentat el 1077. Els Erill eren s\u00fabdits dels comtes de Pallars, per\u00f2 no s’acontentaren amb l’actuaci\u00f3 a les seves terres, i passaren al servei directe dels reis d’Arag\u00f3 (fi del segle XI). Intervingueren en la conquesta de les terres lleidatanes (reberen Fraga, Almenar i altres llocs), i enlla\u00e7aren amb poderoses fam\u00edlies. Cal destacar que Berenguer d’Erill fou un destacat bisbe de Lleida (1205 – 1236) i conseller de Jaume I. La baronia d’Erill, amb centre inicial a Erillcastell, comprenia la vall de Bo\u00ed (on emprengueren la construcci\u00f3 de les esgl\u00e9sies rom\u00e0niques de la vall de Bo\u00ed), la vall de Viu, de Manyanet i la Vall Fosca, aix\u00ed com la ribera oriental de la Noguera Ribagor\u00e7ana entre el Pont de Suert i Espills.<\/p>\n

Amb els i les alumnes\u00a0 de segon de batxillerat de l’IES Lladonosa hem fet un magn\u00edfic itinerari per arribar al poble, on hi destaca l‘inter\u00e8s geol\u00f2gic<\/b> de l’indret.\u00a0 Aquesta \u00e9s una geozona de valor \u00fanic a nivell planetari: en destaca el conjunt d’afloraments de roques volc\u00e0niques calco-alcalines del Carbon\u00edfer Superior. La import\u00e0ncia geol\u00f2gica de la zona es remarca a Mart\u00ed (ignimbrites), on es d\u00f3na un breu informe sobre l\u2019inter\u00e8s de la contrada citant que:\u00a0\u201cl\u2019observaci\u00f3 i estudi d\u2019aquesta geozona permet con\u00e8ixer la relaci\u00f3 entre el vulcanisme i el context estructural que condicion\u00e0 la creaci\u00f3 de les conques carbon\u00edferes al Pirineu, i tamb\u00e9 i de manera m\u00e9s general la din\u00e0mica de les grans erupcions volc\u00e0niques explosives\u201d.<\/i><\/p>\n

Durant l’itinerari, hem pogut observar materials com:<\/p>\n

\u2013 metasediments paleozoics (Devoni\u00e0)<\/div>\n

 <\/p>\n

\u2013 dip\u00f2sits volc\u00e0nics i vulcano-sedimentaris carbon\u00edfers i permians (Estefani\u00e0 i Autuni\u00e0)<\/div>\n

 <\/p>\n

\u2013 sediments i carbons carbon\u00edfers (Estefani\u00e0 inferior i superior)<\/div>\n

 <\/p>\n

\u2013 sediments permians (Autuni\u00e0)<\/div>\n

 <\/p>\n

\u2013 discordan\u00e7a angular (Tri\u00e0sic inferior)<\/div>\n

 <\/p>\n

\u2013 sediments tri\u00e0sics (Tri\u00e0sic inferior)<\/div>\n

 <\/p>\n

\u2013 roques subvolc\u00e0niques tri\u00e0siques (Tri\u00e0sic superior)<\/div>\n
<\/div>\n
\"IMG_20160401_232930\"<\/a>
Empremtes de l’activitat volc\u00e0nica que es va produir en aquesta zona fa uns 300 milions d’anys: bombes i cendres volc\u00e0niques<\/figcaption><\/figure>\n

 <\/p>\n

\"fossil\"<\/a>
F\u00f2ssils de vegetaci\u00f3 entre sediments del Carbon\u00edfer<\/figcaption><\/figure>\n

 <\/p>\n

\"IMG_20160401_141009\"<\/a>
Erillcastell, i al fons, observem discordan\u00e7a angular (estrats del Carbon\u00edfer, foscos, a la part inferior, als quals se superposen els del Tri\u00e0sic, de to rogenc)<\/figcaption><\/figure>\n
\"tussilago\"<\/a>
Flor de tartera: Tussilago farfara<\/figcaption><\/figure>\n


\n<\/span><\/p>\n

El Permi\u00e0 fou una \u00e8poca geol\u00f2gica de gran activitat tect\u00f2nica. En aquesta zona hi trobem un cas de vulcanisme; per\u00f2 tamb\u00e9 les granodiorites de la zona axial s\u00f3n del Permi\u00e0, tan antigues com les enormes erupcions siberianes que localment presenten colades de lava bas\u00e0ltica de fins a 4 km de gruix. Tot plegat va ser la manifestaci\u00f3 de la fragmentaci\u00f3 de Pangea i Gondwana, i principalment a partir d’aquest pic d’activitat volc\u00e0nica es va originar el canvi clim\u00e0tic global que va dur a l’extinci\u00f3 massiva del Permi\u00e0, amb la desaparici\u00f3 de formes vives m\u00e9s gran que s’ha conegut mai. La ra\u00f3 directa del desastre va ser una pres\u00e8ncia d’oxigen a l’atmosfera de nom\u00e9s 16-12%, un excessiu efecte hivernacle (CO2, CH4 i SO2) hi va ajudar, mitjan\u00e7ant un increment de l’absorci\u00f3 de la calor de la superf\u00edcie terrestre que va comportar la fosa de les grans glaceres de l’Ant\u00e0rtic i de Gondwana. El drama que es posa de manifest en aquesta secci\u00f3 va ser realment un esdeveniment de primer ordre a nivell planetari, perqu\u00e8 en va resultar l\u2019extinci\u00f3 d\u2019un 90% de les esp\u00e8cies del moment.<\/p>\n

Font: ctfc.cat<\/p>\n","protected":false},"excerpt":{"rendered":"

IES Lladonosa, Lleida Erillcastell \u00e9s un poble de la comarca de l’Alta Ribagor\u00e7a, i pertany al terme municipal del Pont […]<\/p>\n","protected":false},"author":1,"featured_media":8524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":[1,29],"tags":[],"class_list":["post-8399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/8399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/comments?post=8399"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/8399\/revisions"}],"predecessor-version":[{"id":8528,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/8399\/revisions\/8528"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/media\/8524"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/media?parent=8399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/categories?post=8399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/tags?post=8399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}