{"id":110660,"date":"2018-03-11T10:36:46","date_gmt":"2018-03-11T10:36:46","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/alteraciones-en-c-gigas-debidas-a-la-presencia-de-tributilestano-estudio-comparativo-e-implicaciones-diageneticas-en-ostras-del-la%c2%admite-aptiense-inferior-superior-cuenca-vasco-cantabrica\/"},"modified":"2018-03-11T10:36:46","modified_gmt":"2018-03-11T10:36:46","slug":"alteraciones-en-c-gigas-debidas-a-la-presencia-de-tributilestano-estudio-comparativo-e-implicaciones-diageneticas-en-ostras-del-la%c2%admite-aptiense-inferior-superior-cuenca-vasco-cantabrica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/mineralogia\/alteraciones-en-c-gigas-debidas-a-la-presencia-de-tributilestano-estudio-comparativo-e-implicaciones-diageneticas-en-ostras-del-la%c2%admite-aptiense-inferior-superior-cuenca-vasco-cantabrica\/","title":{"rendered":"Alteraciones en c. gigas debidas a la presencia de tributilesta\u00f1o. estudio comparativo e implicaciones diagen\u00e9ticas en ostras del l\u00edmite aptiense inferior-superior (cuenca vasco-cant\u00e1brica)"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ruth Ibisate Diez-caballero <\/strong><\/h2>\n<p>La ostra crassostrea gigas (thumberg, 1793), est\u00e1 catalogada como especie centinela para determinar la presencia de contaminaci\u00f3n antropog\u00e9nica por tributilesta\u00f1o (tbt). Su r\u00e1pida respuesta morfol\u00f3gica frente a peque\u00f1as concentraciones de este contaminante, permite valorar la calidad de las aguas de una manera sencilla y r\u00e1pida. Adem\u00e1s, debido al car\u00e1cter s\u00e9sil y filtrador de c. Gigas, su concha supone un excelente registro de las variaciones medioambientales que hayan podido acontecer.  el primer bloque de este trabajo, tiene como objetivo caracterizar, a diferentes escalas (morfol\u00f3gica, microestructural, texturaci\u00f3n cristalogr\u00e1fica y qu\u00edmica), las conchas de c. Gigas, as\u00ed como detectar las alteraciones generadas por la presencia de tbt en puertos de la costa de bizkaia (getxo, plentzia y zierbena).  en un segundo bloque, se aborda el estudio morfol\u00f3gico, microestructural y diagen\u00e9tico de los f\u00f3siles de ostra de la unidad calizas nodulosas con ostreidos y limolitas de sopuerta (ucnols) (aptiense inferior  aptiense superior) y del biostromo de ostreidos exogyra de berria (boeb). Dentro de este bloque, tambi\u00e9n se han analizado con detalle las mineralizaciones pir\u00edticas desarrolladas en zonas de las conchas originalmente ricas en materia org\u00e1nica, donde pueden haber quedado conservados restos de colonias bacterianas inductoras de un complejo proceso sulfatoreductor.  resaltamos la importancia de conocer con detalle aspectos relacionados con los mecanismos de formaci\u00f3n de las conchas actuales, modelos de crecimiento y las interacciones con el medio, para realizar estimaciones de inter\u00e9s paleoambiental sobre conchas de ostreidos f\u00f3siles afectadas por diferentes grados de diag\u00e9nesis.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Alteraciones en c. gigas debidas a la presencia de tributilesta\u00f1o. estudio comparativo e implicaciones diagen\u00e9ticas en ostras del l\u00edmite aptiense inferior-superior (cuenca vasco-cant\u00e1brica)<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Alteraciones en c. gigas debidas a la presencia de tributilesta\u00f1o. estudio comparativo e implicaciones diagen\u00e9ticas en ostras del l\u00edmite aptiense inferior-superior (cuenca vasco-cant\u00e1brica) <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ruth Ibisate Diez-caballero <\/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 27\/07\/2011<\/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>Jos\u00e9 Luis Pizarro Sanz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: julio Rodr\u00edguez l\u00e1zaro <\/li>\n<li>Juan  Jos\u00e9 Gomez alday (vocal)<\/li>\n<li>Antonio  gerardo Checa gonzalez (vocal)<\/li>\n<li>alejandro Rodr\u00edguez navarro (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ruth Ibisate Diez-caballero La ostra crassostrea gigas (thumberg, 1793), est\u00e1 catalogada como especie centinela para determinar la 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