{"id":2917,"date":"2017-04-28T11:33:46","date_gmt":"2017-04-28T09:33:46","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesm-jmzafra\/?p=2917"},"modified":"2018-06-07T13:16:47","modified_gmt":"2018-06-07T11:16:47","slug":"pissarra-2","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/general\/pissarra-2\/","title":{"rendered":"PISSARRA"},"content":{"rendered":"

Nom<\/strong><\/p>\n

Catal\u00e0: Pissarra<\/strong>
\nCastell\u00e0: Pizarra
\nAngl\u00e8s: Slate
\nFranc\u00e8s: Ardoise<\/p>\n

\"Resultado\"Imagen<\/p>\n

Observaci\u00f3 amb lupa:<\/strong><\/p>\n

Es pot veure un terreny molt irregular que en algunes parts brilla i \u00e9s d\u2019un color plata. Es diferencien les capes que formen la pedra, que s\u00f3n irregulars. Les parts que brillen semblen provenir de diferents punts incrustats a la pedra, alguns m\u00e9s petits i altres de m\u00e9s grans.<\/p>\n

Quin tipus i subtipus de roca i\/o mineral \u00e9s?<\/strong>
\nMetam\u00f2rfica
\nFormaci\u00f3 de la roca i\/o mineral:<\/strong>
\nProcedeix de la transformaci\u00f3 de les roques sediment\u00e0ries sotmeses a fortes pressions que procedeixen de pressions teut\u00f2niques (per exemple, la formaci\u00f3 de muntanyes). Es forma a les zona externes de les aur\u00e8oles de contacte i sovint degraden cap cornianes. La pissarra es forma quan els minerals de l’argila que integren roques de gra fi, com la pelita es transforma en mica o clorita.
\nComposici\u00f3 qu\u00edmica:<\/strong>
\nLa pissarra cont\u00e9 diferents minerals: com per exemple: quars, miques, minerals d’argila i feldspats, la composici\u00f3 qu\u00edmica d’ella dep\u00e8n de la quantitat del mineral que abundi a la roca. Est\u00e0 constitu\u00efda per fang i al\u00b7luvi\u00f3.<\/p>\n

Origen:<\/strong>
\nLa pissarra ve de la transformaci\u00f3 de les roques sediment\u00e0ries sotmeses a fortes pressions que procedeixen de pressions teut\u00f2niques (per exemple, la formaci\u00f3 de muntanyes). Es forma a les zona externes de les aur\u00e8oles de contacte i sovint degraden cap cornianes. La pissarra es forma en qualsevol lloc que hagi dip\u00f2sits de sorra, fang i sediments, aquests s’uneixen i formen roques que s’integren de diverses maneres i tipus de roques, entre elles hi ha la pissarra.<\/p>\n

Breu descripci\u00f3 (color, textura…):<\/strong>
\nColor: Gris mitj\u00e0 a fosc, verd, color de la femta del vi, porpra, marr\u00f3 i negre.
\nDensitat: 2,7 a 2,8
\nDuresa: dura (mitjana)
\nBrillantor: La seva brillantor \u00e9s opac. Satinat
\nTextura: Grans fins i pissarrosa. Compacta i no pateix meteoritzaci\u00f3 apreciable.<\/p>\n

Usos i\/o aplicacions:<\/strong>
\n\u2022 L\u00e0pides
\n\u2022 Habitatges
\n\u2022 Muralles
\n\u2022 Elements
\n\u2022 Decoratius.
\n\u2022 Pissarres de les aules<\/p>\n

Lloc d’origen (Jaciments m\u00e9s importants):<\/strong>
\n\u2022 El Bierzo,
\n\u2022 Cabrera (Lle\u00f3),
\n\u2022 Valdeorras (Orense),
\n\u2022 Ortigueira (La Corunya),
\n\u2022 Riofrio d’Aliste, Palazuelo de les Coves (Zamora),
\n\u2022 Bernardos (Seg\u00f2via)
\nVillar del Rei (Badajoz).<\/p>\n

Refer\u00e8ncia bibliogr\u00e0fica:<\/strong><\/p>\n

\u2022 http:\/\/www.blogmuseuciencies.org\/2010\/10\/la-pissarra-i-el-
\nguix\/#.WxaezkiFPIU<\/p>\n

\u2022 http:\/\/bloquescando.com\/la-pizarra-origen-y-usos\/
\n\u2022 http:\/\/www.turismoleon.org\/turismo\/el-bierzo.php
\n\u2022 https:\/\/es.wikipedia.org\/wiki\/Pizarra_(roca)
\n\u2022 http:\/\/geologiarogerespolet.blogspot.com\/2012\/12\/pissarra.html<\/p>\n

 <\/p>\n

 <\/p>\n

<\/h6>\n","protected":false},"excerpt":{"rendered":"

Nom Catal\u00e0: Pissarra Castell\u00e0: Pizarra Angl\u00e8s: Slate Franc\u00e8s: Ardoise Observaci\u00f3 amb lupa: Es pot veure un terreny molt irregular que en algunes parts brilla i \u00e9s d\u2019un color plata. Es diferencien les capes que formen la pedra, que s\u00f3n irregulars. Les parts que brillen semblen provenir de diferents punts incrustats a la pedra, alguns m\u00e9s […]<\/p>\n","protected":false},"author":182,"featured_media":0,"comment_status":"closed","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 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":[1,321],"tags":[320,326],"class_list":["post-2917","post","type-post","status-publish","format-standard","hentry","category-general","category-museu-de-geologia","tag-2a3","tag-metamorfiques"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/2917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/users\/182"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/comments?post=2917"}],"version-history":[{"count":4,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/2917\/revisions"}],"predecessor-version":[{"id":9954,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/2917\/revisions\/9954"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/media?parent=2917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/categories?post=2917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/tags?post=2917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}