{"id":88716,"date":"2001-02-02T00:00:00","date_gmt":"2001-02-02T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/astrobiocronologia-y-estratigrafia-de-alta-resolucion-del-neogeno-de-la-cuenca-del-guadalquivir-golfo-de-cadiz\/"},"modified":"2001-02-02T00:00:00","modified_gmt":"2001-02-02T00:00:00","slug":"astrobiocronologia-y-estratigrafia-de-alta-resolucion-del-neogeno-de-la-cuenca-del-guadalquivir-golfo-de-cadiz","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/astrobiocronologia-y-estratigrafia-de-alta-resolucion-del-neogeno-de-la-cuenca-del-guadalquivir-golfo-de-cadiz\/","title":{"rendered":"Astrobiocronolog\u00eda y estratigrafia de alta resolucion del neogeno de la cuenca del guadalquivir-golfo de cadiz."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Santiago Ledesma Mateo <\/strong><\/h2>\n<p>Se presenta una detallada cronol\u00f3gica del ne\u00f3geno de la cuenca del guadalquivir-golfo de cadiz basada en 20 bioeventos de plancton calc\u00e1reo, y se proponen seis unidades bioestratigr\u00e1ficas. Se presente asimismo la dataci\u00f3n individual de los aparatos turbid\u00edticos messinienses objeto de la exploraci\u00f3n de hidrocarburos. se han utilizado 32 sondeos en el analisis bioestratigrafico.  el reconocimiento en las diagrafias de las pautas de ciclicidad astronomica (frecuencias de milankovitch) ha permitido correlacionar ciclo a ciclo 20 diagrafias (de rayos gamma, velocidad s\u00f3nica y resistividad), con la curva de insolaci\u00f3n de verano (laskar, 1990) y la escala astronomica de tiempo. Asimismo se muestra una correlaci\u00f3n capa a capa con las secciones de referencia de la cuenca de sorbas (almeria) y de capo rossello (sicilia. se establecen una serie de unidades cicloestratigraficas de car\u00e1cter astronomico-climatico datando y correlacionando el intervalo de 7.5 ma hasta 2.6 ma. Esta tesis trata de demostrar como el analisis cicloestratigrafico del registro geofisico, acompa\u00f1ado de estudios bioestratigrafivos permite correlaciones globales y dataciones astronomicas con errores inferiores a 20 ka.  se han identificado cinco unidades litosismicas desde el tortoniense superior basadas en 11 perfiles de tipo sismobioestratigrafico, estableciendose la relacion de estas unidades con la secuencia de relleno de la cuenca.  el contexto tect\u00f3nico compresivo entorno al limite tortoniense-messiniense, pudo desencadenar el ingreso de olistotroma, el desarrollo de los cuerpos turbiditicos messinienses en el guadalquivir y el cierre definitivo de la conexi\u00f3n atl\u00e1ntico-mediterraneo en el estrecho norbetico. El desarrollo de los aparatos turbiditicos en el fondo de cuenca se prolongaria durante todo el messiniense. En el limite mio-plioceno, se produce una inversi\u00f3n de las condiciones tectonicas.  la tesis se acompa\u00f1a de un cd-rom interactivo que incluye<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Astrobiocronolog\u00eda y estratigrafia de alta resolucion del neogeno de la cuenca del guadalquivir-golfo de cadiz.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Astrobiocronolog\u00eda y estratigrafia de alta resolucion del neogeno de la cuenca del guadalquivir-golfo de cadiz. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Santiago Ledesma Mateo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 02\/02\/2001<\/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 Javier Sierro S\u00e1nchez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 angel (secretario) Gonz\u00e1lez delgado <\/li>\n<li>wout Krijgsman (vocal)<\/li>\n<li>cristino Jos\u00e9 Dabrio gonzalez (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Santiago Ledesma Mateo Se presenta una detallada cronol\u00f3gica del ne\u00f3geno de la cuenca del guadalquivir-golfo de cadiz [&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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