{"id":28553,"date":"2004-06-02T00:00:00","date_gmt":"2004-06-02T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-geoqua%c2%admico-de-la-sedimentacion-salina-en-un-sistema-playa-lake-estacional-de-tipo-sulfatado-sodico-la-salada-de-mediana-zaragoza-espana\/"},"modified":"2004-06-02T00:00:00","modified_gmt":"2004-06-02T00:00:00","slug":"estudio-geoqua%c2%admico-de-la-sedimentacion-salina-en-un-sistema-playa-lake-estacional-de-tipo-sulfatado-sodico-la-salada-de-mediana-zaragoza-espana","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/zaragoza\/estudio-geoqua%c2%admico-de-la-sedimentacion-salina-en-un-sistema-playa-lake-estacional-de-tipo-sulfatado-sodico-la-salada-de-mediana-zaragoza-espana\/","title":{"rendered":"Estudio geoqu\u00edmico de la sedimentaci\u00f3n salina en un sistema playa-lake estacional de tipo sulfatado s\u00f3dico: la salada de mediana (zaragoza, espa\u00f1a)"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Pedro Luis L\u00f3pez Juli\u00e1n <\/strong><\/h2>\n<p>La salada de mediana (provincia de zaragoza) es un sistema salino continental de tipo playalake, con funcionamiento estacional y de tipo qu\u00edmico sulfatado s\u00f3dico.  Est\u00e1 desarrollado en una zona caracterizada por la presencia de rocas sedimentarias con un alto contenido en evaporitas, y est\u00e1 expuesta a condiciones clim\u00e1ticas semi\u00e1ridas con un acusado d\u00e9ficit h\u00eddrico.  La caracterizaci\u00f3n inicial del sistema a partir de la recopilaci\u00f3n de informaci\u00f3n y la recogida de muestras ha permitido comprobar que las salmueras son de tipo neutro, ricas en sulfato, sodio y magnesio, y que durante su evoluci\u00f3n por evaporaci\u00f3n tiene lugar la precipitaci\u00f3n de yeso, mirabilita, thenardita y bloedita.  se ha realizado un experimento de evaporaci\u00f3n en laboratorio en condiciones isotermas, que ha permitido corroborar que la evoluci\u00f3n por evaporaci\u00f3n de las salmueras lleva aparejada la precipitaci\u00f3n de mirabilita, thenardita y bloedita.  Se han calculado adem\u00e1s los \u00edndices de saturaci\u00f3n de las soluciones respecto de dichas fases minerales (para lo cual se ha empleado el c\u00f3digo de modelizaci\u00f3n geoqu\u00edmica phrqpitz, asado en el modelo de pitzer), observ\u00e1ndose una \u00f3ptima correlaci\u00f3n entre los datos experimentales y los resultados del tratamiento fisicoqu\u00edmico.  se han delimitado los proceso actuantes en el sistema natural, y que condicionan la existencia de tres fases evolutivas que se suceden anualmente de manera c\u00edclica:  1. Recarga del sistema salino: agua procedente de precipitaciones y escorrent\u00eda superficial, que inunda la laguna y disuelve la costra salina previa.  2. Evoluci\u00f3n por evaporaci\u00f3n: en el ciclo invernal, las bajas temperaturas permiten s\u00f3lo la precipitaci\u00f3n de mirabilita.  En el ciclo estival, el sistema evoluciona hasta fases m\u00e1s avanzadas, form\u00e1ndose una costra salina central compuesta por thenardita y bloedita con textura microcristalina.  3. Desecaci\u00f3n de la laguna: desaparici\u00f3n de la masa de agua sup<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio geoqu\u00edmico de la sedimentaci\u00f3n salina en un sistema playa-lake estacional de tipo sulfatado s\u00f3dico: la salada de mediana (zaragoza, espa\u00f1a)<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio geoqu\u00edmico de la sedimentaci\u00f3n salina en un sistema playa-lake estacional de tipo sulfatado s\u00f3dico: la salada de mediana (zaragoza, espa\u00f1a) <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Pedro Luis L\u00f3pez Juli\u00e1n <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 06\/02\/2004<\/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> Mandado Collado Juan  Miguel<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: vincent Vall\u00e9s <\/li>\n<li> S\u00e1nchez navarro Jos\u00e9 angel (vocal)<\/li>\n<li>guillermo Revuelta blanco (vocal)<\/li>\n<li>Antonio P\u00e9rez Garc\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Pedro Luis L\u00f3pez Juli\u00e1n La salada de mediana (provincia de zaragoza) es un sistema salino continental de 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