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Weddell Sea Tectonics and Gondwana Break-up

Product Code: SP108
Series: GSL Special Publications
Author/Editor: Edited by B.C. Storey, E.C. King and R.A. Livermore
Publication Date: 30 April 1996
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Description

Provides a comprehensive overview of the tectonic evolution of one of the key areas of Gondwana geology, the Weddell Sea and surrounding regions. It brings together in one volume a unique collection of international datasets from one of the most remote, least known and least accessible seas in the world. Difficult ice conditions have protected the Weddell Sea from the type of comprehensive investigation carried out in other key oceanic areas so that progress towards generally accepted models has been slow and characterized by controversy. Uncertainties as to how the continental fragments surrounding the Weddell Sea should be reconstructed within the Gondwana supercontinent have prevented the acceptance of plausible Gondwana break-up models. This book seeks to fill this significant gap in our knowledge by incorporating available marine and land geophysical data, on-land geological data and satellite gravity data. It has greatly increased our understanding of the evolution of this complex region and of the processes associated with Gondwana break-up. The book addresses thefollowing topics: history of sea-floor spreading in the Weddell Sea; origin and nature of the Weddell Sea embayment area - continental or oceanic?; origin and nature of continent-ocean boundaries and the prominent escarpments bounding the Weddell Sea and embayment area; kinematic history of microplates based onpalaeomagnetic data; kinematic history of crustal shear and fault zones related to Weddell Sea evolution; and Gondwana break-up processes and the initial rifting history in the Weddell Sea area.

Type: Book
Ten Digit ISBN: 1-897799-59-4
Thirteen Digit ISBN: 978-1-897799-59-8
Publisher: GSL
Binding: Hardback
Pages: 290
Weight: 0.74 kg

Contents

Weddell Sea tectonics and Gondwana break-up: an introduction • A review of geological constraints on the pre-break-up position of the Ellsworth Mountains within Gondwana: implications for Weddell Sea evolution • Summary of palaeomagnetic results from West Antarctica: implications for the tectonic evolution of the Pacific margin of Gondwana during the Mesozoic • Geochronology of Mesozoic tholeiitic magmatism in Antarctica: implications for the development of the failed Weddell Sea Rift System • Aspects of Jurassic magmatism and faulting in western Dronning Maud Land, Antarctica: implications for Gondwana break-up • Mesozoic and Cenozoic palaeo-stress fields of the South Patagonian Massif deduced from structural and remote sensing data • Geodynamic evolution of the Antarctic Peninsula during Mesozoic times and its bearing on Weddell Sea history • The geological evolution of Falkland Islands continental shelf • The continental margin off East Antarctica between 10°W and 30°W • eromagnetic data from the southern Weddell Sea embayment and adjacent areas: synthesis and interpretation • Marine gravity from Geosat and ERS-1 altimetry in the Weddell Sea • Crustal structure of the Antarctic continental margin in the eastern Weddell Sea • Structure and Mesozoic evolution of the eastern Weddell Sea, Antarctica: history of early Gondwana break-up • The history of denudation and resedimentation at the continental margin of western Dronning Maud Land, Antarctica, during break-up of Gondwana • Structure and origin of southern Weddell Sea crust: results and implications • New seismic data from the Ronne Ice Shelf, Antarctica • Mesozoic seafloor spreading in the southern Weddell Sea • The development of the crust off Dronning Maud Land, East Antarctica • Magnetic anomaly lineations and fracture zones deduced from vector magnetic anomalies in the West Enderby Basin

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