Onset and evolution of the scotia sea basins, antarctica: tectonic, sedimentary and palaeoceanographic implications

The main aim of this study is to describe the onset and stratigraphic evolution of the south Scotia Sea sedimentary basins. The interplay between tectonics, sedimentary processes, oceanography and climate is explored to trace a regional evolution linked to water mass interchange between the Weddell...

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Bibliographic Details
Main Author: Pérez Miguel, Lara F.
Other Authors: Maldonado López, Andrés, Hernández Molina, Francisco Javier, Universidad de Granada. Programa Oficial de Doctorado en: Ciencias de la Tierra, Consejo Superior de Investigaciones Científicas (CSIC). Instituto Andaluz de Ciencias de la Tierra
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: Universidad de Granada 2014
Subjects:
Online Access:http://hdl.handle.net/10481/39635
Description
Summary:The main aim of this study is to describe the onset and stratigraphic evolution of the south Scotia Sea sedimentary basins. The interplay between tectonics, sedimentary processes, oceanography and climate is explored to trace a regional evolution linked to water mass interchange between the Weddell Sea and the Pacific and Atlantic oceans. The basins´ stratigraphic architecture is studied in detail through a seismostratigraphic and morpho-structural analysis of available multichannel seismic profiles. Gravity and magnetic anomaly models are additionally considered to constrain the nature and age of the basins. El objetivo principal de este estudio ha sido clarificar el inicio y la evolución estratigráfica de las cuencas sedimentarias existentes en la parte meridional del Mar de Scotia. Se aborda un estudio que engloba aspectos tectónicos, procesos sedimentarios, oceanografía y clima, y se propone un nuevo modelo de evolución regional que incluye el intercambio de masas de agua entre el Mar de Weddell y los océanos Pacífico y Atlántico. Se presenta un estudio regional de la arquitectura estratigráfica de las cuencas a través de análisis seísmo-estratigráfico y morfo-estructural de los perfiles de sísmica multicanal disponibles en el área. Además, se consideran modelos de gravedad y anomalías magnéticas en orden de constreñir la naturaleza y edad de las cuencas. Tesis Univ. Granada. Programa Oficial de Doctorado en: Ciencias de la Tierra The author acknowledges a JAE predoctoral studentship from CSIC. Presently, work is being done as part of projects CTM2008-06386-C02/ANT and CTM2011-30241-C02, and in relation to projects CTM2012-39599-C03, IGCP-619 and INQUA 1204. This work was partially funded by the COMPASS consortium and was done in collaboration with the Continental Margins Research Group (CMRG) at Royal Holloway University of London (UK).