{"id":16311,"date":"2022-12-19T18:51:02","date_gmt":"2022-12-19T17:51:02","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16311"},"modified":"2022-12-20T09:41:49","modified_gmt":"2022-12-20T08:41:49","slug":"les-roques-sedimentaries-ens-expliquen-el-passat-2","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/les-roques-sedimentaries-ens-expliquen-el-passat-2\/","title":{"rendered":"Les roques sediment\u00e0ries ens porten al Tri\u00e0sic"},"content":{"rendered":"

Dilluns 19 de desembre l\u2019alumnat de1r de batxillerat de l\u2019optativa CTMA de l\u2019Institut Llu\u00eds de Requesens<\/a> de Molins de Rei ha vingut en transport p\u00fablic fins a Pallej\u00e0 per realitzar una sortida de geologia i estudiar diferents afloraments de roques sedimentaries del Tri\u00e0sic.<\/a><\/p>\n

\"\"L\u2019activitat est\u00e0 plantejada com un itinerari que consta de 3 parades en diferents afloraments. En cada un d\u2019ells i amb el material necessari, han sigut capa\u00e7os d\u2019obtenir les dades topogr\u00e0fiques com les coordenades UTM, l\u2019altitud i la pot\u00e8ncia dels afloraments. Aix\u00ed mateix, en cada aflorament han dut a terme una s\u00e8rie de proves com un examen de la granulometria dels materials, la comprovaci\u00f3 de la duresa del mineral predominant en la roca per identificar-la i tamb\u00e9 la prova de reacci\u00f3 amb HCl per confirmar la pres\u00e8ncia de carbonat de calci.<\/p>\n

\"\"Com a resultat, han confirmat que el primer aflorament correspon a conglomerat amb quarsita i el segon correspon a gres ric en quars. Aquestes dues roques rogenques d\u2019origen continental corresponen a ambients sedimentaris al\u00b7luvials del Tri\u00e0sic inferior. En l\u2019aflorament superior han identificat calc\u00e0ries i dolomies corresponents al segon estatge del Tri\u00e0sic que indiquen unes condicions de sedimentaci\u00f3 marines. D\u2019aquesta manera han pogut confirmar la transgressi\u00f3 marina que va tenir lloc en aquella \u00e8poca.<\/p>\n

Per acabar, hem parlat de com elaborar la columna estratigr\u00e0fica corresponent\u00a0 i tamb\u00e9 com realitzar el perfil geol\u00f2gic de la zona.<\/p>\n

L\u2019alumnat ha aconseguit completar tota la feina i aplicar t\u00e8cniques de camp dins del m\u00f3n de la geologia, felicitats!<\/p>\n","protected":false},"excerpt":{"rendered":"

Dilluns 19 de desembre l\u2019alumnat de1r de batxillerat de l\u2019optativa CTMA de l\u2019Institut Llu\u00eds de Requesens de Molins de Rei ha vingut en transport p\u00fablic fins a Pallej\u00e0 per realitzar una sortida de geologia i estudiar diferents afloraments de roques sedimentaries del Tri\u00e0sic. L\u2019activitat est\u00e0 plantejada com un itinerari que consta de 3 parades en 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