{"id":39742,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/petrologia-y-geoquimica-de-los-granitoides-del-sector-oriental-de-gredos-sistema-central-espanol\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"petrologia-y-geoquimica-de-los-granitoides-del-sector-oriental-de-gredos-sistema-central-espanol","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/petrologia-y-geoquimica-de-los-granitoides-del-sector-oriental-de-gredos-sistema-central-espanol\/","title":{"rendered":"Petrolog\u00eda y geoquimica de los granitoides del sector oriental de gredos (sistema central espa\u00f1ol)."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Herreros Villanueva Victor Manuel <\/strong><\/h2>\n<p>En el sector oriental de gredos (sistema central espa\u00f1ol), en la zona de enlace entre las sierras de guadarrama y gredos (provincia de vila), aflora un extenso conjunto de granitoides herc\u00ednicos tardicinem\u00e1ticos en el que pueden distinguirse dos grandes grupos. El m\u00e1s importante volum\u00e9tricamente, o complejo plut\u00f3nico regional (cpr), est\u00e1 formado por monzogranitos y granodioritas biot\u00edticos porf\u00eddicos con allanita y monacita, de afinidades al\u00famino-caf\u00e9micas y emplazados hacia los 306-301 m.A. En condiciones meso- y epizonales. El segundo grupo, o conjunto de plutones \u00e1cidos circunscritos (cpac), est\u00e1 constiuidos por una serie de peque\u00f1os plutones gran\u00edticos y leucogran\u00edticos epizonales, intrusivos en el cpr, de afinidades alum\u00ednicas, con proporciones variables de biotita, moscovita, cordierita y escasa monacita. Su edad de emplazamiento debe ser pr\u00f3xima a la del complejo regional, pero se carece de determinaciones geocronol\u00f3gicas precisas. Todo el conjunto plut\u00f3nico estudiado es de composici\u00f3n peralum\u00ednica, con un rango restringido de variaci\u00f3n geoqu\u00edmica (65-67% sio2). En elementos traza, es de destacar la escasa fraccionaci\u00f3n de tierras raras y la variable anomal\u00eda negativa de europio. Las determinaciones termob\u00e1ricas indican condiciones de emplazamiento de los granitoides entre 640 y 932 grados c y por debajo de 3.2 kb. Podr\u00edan generarse por fusi\u00f3n parcial de protolitos ortoderivados de naturaleza continental, y su evoluci\u00f3n parece estar controlada por mecanismos de cristalizaci\u00f3n fraccionada combinados a escasa local con procesos de mezcla de magmas gran\u00edticos.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Petrolog\u00eda y geoquimica de los granitoides del sector oriental de gredos (sistema central espa\u00f1ol).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Petrolog\u00eda y geoquimica de los granitoides del sector oriental de gredos (sistema central espa\u00f1ol). <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Herreros Villanueva Victor Manuel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/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>Carlos Villaseca Gonzalez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: mercedes Mu\u00f1oz garcia <\/li>\n<li> Barbero gonzalez Luis Carlos (vocal)<\/li>\n<li>Antonio Castro dorado (vocal)<\/li>\n<li>Miguel Lopez plaza (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Herreros Villanueva Victor Manuel En el sector oriental de gredos (sistema central espa\u00f1ol), en la zona 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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