{"id":9914,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1996\/01\/01\/aproximacion-a-la-petrogenesis-de-las-pegmatitas-del-cap-de-creus\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"aproximacion-a-la-petrogenesis-de-las-pegmatitas-del-cap-de-creus","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/aproximacion-a-la-petrogenesis-de-las-pegmatitas-del-cap-de-creus\/","title":{"rendered":"Aproximacion a la petrogenesis de las pegmatitas del cap de creus."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Pura Alfonso Abella <\/strong><\/h2>\n<p>En el campo pegmatitico del cap de creus se encuentran los subtipos de berilo-columbita (ii), berilo-columbita-fosfato (iii), albita (iv) y terminos esteriles (i). En base al estudio de inclusiones fluidas, se demuestra que la cristalizacion de las se produce durante el transcurso de la desmezcla de un fluido hipersalino con co2 del magma; este fluido a su vez, se exuelve en otros dos: uno rico en co2, que origina el nucleo, esteril, y otro salino, que queda enriquecido en elementos incompatibles y origina vetas albiticas y fenomenos metasomaticos alcalinos. Los fluidos residuales dan lugar a vetas de cuarzo-moscovita. Las inclusiones fluidas de las pegmatitas (iv) son menos salinas y no contienen co2 en los estadios iniciales. Se han formado entre 380 y 550 grados c. Y 2-3 kbar. Los fenomenos subsolvus distorsionan la evolucion geoquimica interna de cada tipo, pero se aprecia un aumento progresivo del contenido en p y elementos incompatibles desde el tipo i al iv, lo que sugiere un origen comun para los distintos tipos. Para la genesis del campo se propone un modelo de diferenciacion magmatica a partir de un magma granitico parental no aflorante, hace 270 m.A.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aproximacion a la petrogenesis de las pegmatitas del cap de creus.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aproximacion a la petrogenesis de las pegmatitas del cap de creus. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Pura Alfonso Abella <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Joan Carles Melgarejo Draper<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Purificacion Fenoll Hach-ali <\/li>\n<li>Francois Fontan (vocal)<\/li>\n<li>C\u00e9sar Casquet Mart\u00edn (vocal)<\/li>\n<li>Pere Enrique Gisbert (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Pura Alfonso Abella En el campo pegmatitico del cap de creus se encuentran los subtipos de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"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 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