{"id":3926,"date":"2017-04-28T11:31:36","date_gmt":"2017-04-28T09:31:36","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesm-jmzafra\/?p=3926"},"modified":"2017-04-28T11:31:36","modified_gmt":"2017-04-28T09:31:36","slug":"porfir","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/blogs\/museu-de-geologia\/porfir\/","title":{"rendered":"P\u00d2RFIR"},"content":{"rendered":"<h6>NOM<\/h6>\n<p><em>ca<\/em> P\u00f2rfir<\/p>\n<p><em>es<\/em> P\u00f3rfido<\/p>\n<p><em>en<\/em> Puffed<\/p>\n<h6>DESCRIPCI\u00d3<\/h6>\n<p>El p\u00f2rfir \u00e9s un tipus de roca magm\u00e0tica, m\u00e9s concretament una roca filoniana. \u00c9s una roca formada a partir de la solidificaci\u00f3 del magma, \u00e9s a dir una massa flu\u00efda d&#8217;origen tect\u00f2nic a temperatures molt elevades a l&#8217;interior de l&#8217;escor\u00e7a terrestre. El seu refredament comen\u00e7a molt lentament a profunditat, iniciant la solidificaci\u00f3 del magma i la formaci\u00f3 de cristalls de quars i feldspat entre d&#8217;altres minerals que es van quedant incrustats a la base, amb abundant silici.<\/p>\n<p>T\u00e9 una textura porf\u00edrica ja que est\u00e0 format per gran fenocristalls de diferents mides immerses en altres grans m\u00e9s petits per\u00f2 tamb\u00e9 visibles. Sol ser de color negre o gris fosc amb fenocristalls clars.<\/p>\n<p>L&#8217;\u00fas del p\u00f2rfir es remunta a les antigues civilitzacions assiriobabil\u00f2niques.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/iesm-jmzafra\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3966\" src=\"http:\/\/agora.xtec.cat\/iesm-jmzafra\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1-1024x768.jpg\" alt=\"porfir-microoscopi\" width=\"400\" height=\"300\" srcset=\"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1-1024x768.jpg 1024w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1-300x225.jpg 300w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1-768x576.jpg 768w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1-200x150.jpg 200w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/P\u00f2rfir-microoscopi-1.jpg 1600w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><a href=\"http:\/\/agora.xtec.cat\/iesm-jmzafra\/wp-content\/uploads\/usu164\/2017\/02\/Porfir-vermell_bona_2A1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3968 alignright\" src=\"http:\/\/agora.xtec.cat\/iesm-jmzafra\/wp-content\/uploads\/usu164\/2017\/02\/Porfir-vermell_bona_2A1.jpg\" alt=\"porfir-vermell_bona_2a1\" width=\"400\" height=\"300\" srcset=\"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/Porfir-vermell_bona_2A1.jpg 400w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/Porfir-vermell_bona_2A1-300x225.jpg 300w, https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-content\/uploads\/usu164\/2017\/02\/Porfir-vermell_bona_2A1-200x150.jpg 200w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><\/p>\n<h6>\u00daS<\/h6>\n<p>Sobretot antigament es feia servir per a la pavimentaci\u00f3 dels carrers. Actualment \u00e9s utilitza mes per a la decoraci\u00f3 de les columnes, frontons i llambordes i per als ferms de carretera i per a formigons.<\/p>\n<h6>LLOC D&#8217;ORIGEN<\/h6>\n<p>A M\u00e8xic, s&#8217;explota a San Luis de la Pau (estat de Guanajuato) i al municipi de Tierranueva (estat de San Luis Potos\u00ed). Els pa\u00efsos que s\u00f3n m\u00e9s grans productors de p\u00f2rfir en l&#8217;actualitat s\u00f3n l&#8217;Iran i el Sudan.<\/p>\n<h6>PROCED\u00c8NCIA<\/h6>\n<p>Aquesta roca procedeix de l\u2019Escola Superior d\u2019Agricultura.<\/p>\n<h6>P\u00c0GINES WEB<\/h6>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Clasificaci\u00f3n y caracter\u00edsticas de las rocas\" src=\"https:\/\/www.slideshare.net\/slideshow\/embed_code\/key\/vQhaIAvpRmRGi2\" width=\"427\" height=\"356\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" style=\"border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;\" allowfullscreen> <\/iframe> <\/p>\n<div style=\"margin-bottom:5px\"> <strong> <a href=\"https:\/\/es.slideshare.net\/slideshow\/clasificacin-y-caractersticas-de-las-rocas\/15558601\" title=\"Clasificaci\u00f3n y caracter\u00edsticas de las rocas\" target=\"_blank\">Clasificaci\u00f3n y caracter\u00edsticas de las rocas<\/a> <\/strong> from <strong><a href=\"https:\/\/www.slideshare.net\/Ana_SantosO\" target=\"_blank\">Ana_SantosO<\/a><\/strong> <\/div>\n<\/div>\n<p>https:\/\/es.wikipedia.org\/wiki\/P%C3%B3rfido<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NOM ca P\u00f2rfir es P\u00f3rfido en Puffed DESCRIPCI\u00d3 El p\u00f2rfir \u00e9s un tipus de roca magm\u00e0tica, m\u00e9s concretament una roca filoniana. \u00c9s una roca formada a partir de la solidificaci\u00f3 del magma, \u00e9s a dir una massa flu\u00efda d&#8217;origen tect\u00f2nic a temperatures molt elevades a l&#8217;interior de l&#8217;escor\u00e7a terrestre. El seu refredament comen\u00e7a molt lentament [&hellip;]<\/p>\n","protected":false},"author":74,"featured_media":0,"comment_status":"closed","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":"","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":[321],"tags":[365,322],"class_list":["post-3926","post","type-post","status-publish","format-standard","hentry","category-museu-de-geologia","tag-2a1","tag-magmatiques"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/3926","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\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/comments?post=3926"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/3926\/revisions"}],"predecessor-version":[{"id":3993,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/posts\/3926\/revisions\/3993"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/media?parent=3926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/categories?post=3926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inscaterinaalbert\/wp-json\/wp\/v2\/tags?post=3926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}