{"id":36036,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-metalogenetico-de-las-mineralizaciones-de-plomo-zinc-y-cobre-en-el-paleozoico-de-la-sierra-de-la-demanda-la-rioja-burgos\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"estudio-metalogenetico-de-las-mineralizaciones-de-plomo-zinc-y-cobre-en-el-paleozoico-de-la-sierra-de-la-demanda-la-rioja-burgos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/estudio-metalogenetico-de-las-mineralizaciones-de-plomo-zinc-y-cobre-en-el-paleozoico-de-la-sierra-de-la-demanda-la-rioja-burgos\/","title":{"rendered":"Estudio metalogenetico de las mineralizaciones de plomo, zinc y cobre en el paleozoico de la sierra de la demanda (la rioja-burgos)."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Iba\u00f1ez Gomez Jos\u00e9 Antonio <\/strong><\/h2>\n<p>En este primer estudio mineral\u00f3gico, geoqu\u00edmico y metalogen\u00e9tico de las mineralizaciones m\u00e1s importantes de pb-zn-cu en la regi\u00f3n minera de la demanda, se han investigado siete indicios filonianos y uno estratiforme (origen sedimentario-exhalativo). Los minerales de mena habituales son la galena, esfalerita, calcopirita, as\u00ed como sulfosales de cu\/sb\/ni\/co. La ganga suele ser cuarzo y carbonatos de mg-fe, y ocasionalmente barita.  el encajante paleozoico (areniscas, pizarras y dolom\u00edas) se ha estudiado desde un punto de vista litogeoqu\u00edmico, determin\u00e1ndose los contenidos en elementos mayores y trazas, as\u00ed como sus relaciones con la mineralog\u00eda de las rocas e influencia de las mineralizaciones.  por otro lado, los \u00edndices de cristalinidad de la illita y de la clorita, as\u00ed como del par\u00e1metro b0 de la moscovita, han permitido precisar que el metamorfismo regional asociado a la deformaci\u00f3n herc\u00ednica, es de muy bajo a bajo grado, situado en el l\u00edmite anquizona-epizona, dentro de las facies de esquistos verdes.  los datos isot\u00f3picos del s, c, o y pb, obtenidos en minerales de mena y ganga, parecen indicar que los fluidos hidrotermales mineralizantes fueron principalmente aguas connatas procedentes de la serie encajante y modificadas por la diag\u00e9nesis y el metamorfismo.  las evidencias geol\u00f3gicas, mineral\u00f3gicas y texturales, apoyadas por edades modelo calculadas en base a los is\u00f3topos de pb, han demostrado que las mineralizaciones de la demanda se depositaron a lo largo de tres etapas metalogen\u00e9ticas. Una primera rica en zn-pb durante el c\u00e1mbrico, probablemente siguiendo un modelo sedex (mina carmina); un segundo evento mineralizador especialmente rico en pb, acompa\u00f1ando la deformaci\u00f3n herc\u00ednica que se di\u00f3 durante el westfaliense, con rellenos filonianos (pinarcito, san crist\u00f3bal, costa lusera); y la tercera etapa, m\u00e1s compleja, y caracterizada por pb-cu+-ni-co, tambi\u00e9n filoniana, durante la deformaci\u00f3<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio metalogenetico de las mineralizaciones de plomo, zinc y cobre en el paleozoico de la sierra de la demanda (la rioja-burgos).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio metalogenetico de las mineralizaciones de plomo, zinc y cobre en el paleozoico de la sierra de la demanda (la rioja-burgos). <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Iba\u00f1ez Gomez Jos\u00e9 Antonio <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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>Francisco Velasco Roldan<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Purificacion Fenoll Hach-ali <\/li>\n<li>Alfonso Pesquera Perez (vocal)<\/li>\n<li>Ross Both (vocal)<\/li>\n<li>Gabriel Ruiz De Almod\u00f3var Sel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Iba\u00f1ez Gomez Jos\u00e9 Antonio En este primer estudio mineral\u00f3gico, geoqu\u00edmico y metalogen\u00e9tico de las mineralizaciones m\u00e1s importantes [&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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