The West Gondwana Margin
DOWNLOAD
Download The West Gondwana Margin PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get The West Gondwana Margin book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Tectonic Overview Of The West Gondwana Margin
DOWNLOAD
Author : A.P.M. Vaughan
language : en
Publisher:
Release Date : 2008
Tectonic Overview Of The West Gondwana Margin written by A.P.M. Vaughan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The West Gondwana Margin
DOWNLOAD
Author : C. Casquet
language : en
Publisher:
Release Date : 2008
The West Gondwana Margin written by C. Casquet and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The Western Gondwana Margin Proterozoic To Mesozoic
DOWNLOAD
Author : R.J. Pankhurst
language : en
Publisher:
Release Date : 2008
The Western Gondwana Margin Proterozoic To Mesozoic written by R.J. Pankhurst and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The Proto Andean Margin Of Gondwana
DOWNLOAD
Author : Robert J. Pankhurst
language : en
Publisher: Geological Society of London
Release Date : 1998
The Proto Andean Margin Of Gondwana written by Robert J. Pankhurst and has been published by Geological Society of London this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Science categories.
This text brings together multidisciplinary research and review papers on the Lower Palaeozoic geology of the Sierras Pampeanas and the Precordillera of central west Argentina. It deals with the final stages of assembly of the supercontinent of Gondwana and its tectonic interaction with Laurentia (the North American continent of today).
Aspects Of The Evolution Of The West Antarctic Margin Of Gondwanaland
DOWNLOAD
Author : Anne Marie Grunow
language : en
Publisher:
Release Date : 1989
Aspects Of The Evolution Of The West Antarctic Margin Of Gondwanaland written by Anne Marie Grunow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Geology categories.
Terrane Processes At The Margins Of Gondwana
DOWNLOAD
Author : Alan Vaughan
language : en
Publisher: Geological Society of London
Release Date : 2005
Terrane Processes At The Margins Of Gondwana written by Alan Vaughan and has been published by Geological Society of London this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
The Australide orogen, the southern hemisphere Neoproterozoic to Mesozoic terrane accretionary orogen that forms the palaeo-Pacific margin of Gondwana, is one of the largest and longest-lived orogens on Earth. This book brings together a series of reviews and multidisciplinary research papers that comprehensively cover the Australides from the Tasman orogen of eastern Australia to the Neoproterozoic and Palaeozoic orogens of South America, taking in New Zealand and Antarctica along the way. It deals with the evolution of the southern Gondwana margin, as it grew during a series of terrane accretion episodes from the late Proterozoic through to final fragmentation in mid-Cretaceous times. Global perspectives are given by comparison with the Palaeozoic northern Gondwana margin and documentation of world-wide terrane accretion episodes in the Late Triassic-Early Jurassic and mid-Cretaceous. The Tasmanides of eastern Australia, and the terrane histories of New Zealand and southern South America are given comprehensive up-to-date reviews.
Evolution Of The Patagonian West Antarctica Margin Of Gondwana In The Palaeozoic Early Mesozoic
DOWNLOAD
Author : Paula Alejandra Castillo Gonzalez
language : en
Publisher:
Release Date : 2017
Evolution Of The Patagonian West Antarctica Margin Of Gondwana In The Palaeozoic Early Mesozoic written by Paula Alejandra Castillo Gonzalez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
A number of conflicting tectonic models have been proposed to explain the geological relationships between southern South America (Patagonia) and West Antarctica within the palaeo-Pacific margin of Gondwana. Extensive fragmentation and isolation of the various tectonic blocks during Gondwana break-up have complicated interpretations and palaeogeographic reconstructions. In order to explore and test the different tectonic models, I combine zircon U-Pb, Lu-Hf and O isotopic data for samples from key locations throughout the north and south of Patagonia, the Antarctic Peninsula and the Ellsworth Mountains in West Antarctica. Zircon is a robust refractory mineral that occurs in igneous and metamorphic rocks and survives multiple sedimentary cycles with little change to its isotopic composition. It therefore preserves a perfect archive for testing tectonic correlations.Igneous rocks from the Ellsworth Mountains were dated at ca. 680 Ma, older than previously reported. These zircons indicate that rifting, which affected Mesoproterozoic crust, likely occurred in the Cryogenian and supports a connection between the Ellsworth-Whitmore Mountain block and East Antarctica before the amalgamation of Gondwana. This agrees with the break-up of Rodinia in the context of the southwest United States and East Antarctica configuration. U-Pb zircon dating and O-Hf isotopic compositions of detrital zircons from the Ellsworth Mountains also support this connection, indicating a likely East Antarctic provenance. A Cambrian magmatic event is recorded by zircon at ca. 520 Ma, also related to an extensional setting - but in this case with crustal recycling. I interpret this Cambrian magmatism as a result of a tectonic escape after a collision between the Australo-Antarctic and West Gondwana/Indo-Antarctic plates.In Tierra del Fuego, samples from drill cores indicate that Cambrian magmatism occurred between ca. 540 and 520 Ma with strong similarities to the Pampean Orogen of Argentina. Metamorphism occurred at ca. 265 Ma, when zircon crystallized from high temperature aqueous fluids that previously interacted with Grenvillian rocks. Importantly, igneous rocks from Tierra del Fuego record the first evidence of Permian magmatism at ca. 255 Ma, arising from melting of Cambrian rocks. This suggests prolongation of Permian magmatism from the North Patagonian Massif in northern Patagonia and also connections to the Eastern Domain of the Antarctic Peninsula. Granitic rocks in northern Patagonia record mantle-like O magmatic inputs at ca. 280 Ma and 255 Ma, but with reworking of upper crustal materials between these two events. In north-western Patagonia, Early Permian granites indicate continuity of the Permian magmatic belt along the western margin of South America farther north. Further, detrital Permian zircons in Late Palaeozoic-Early Mesozoic accretionary complexes suggest a continuation of a slightly older Permian subduction-related magmatic arc, partly located in Patagonia and extending to the Antarctic Peninsula. All this data, together with other geological considerations, are in line with an autochthonous or parautochthonous origin for northern Patagonia. It also confirms connections between southern Patagonia and the Antarctic Peninsula from late Palaeozoic to Jurassic times. I suggest that Patagonia rifted from the South African-Ellsworth sector of the paleao-Pacific margin of Gondwana to then collide with the same sector during the Guadalupian.
Paleozoic Of Western Gondwana Active Margin Bolivian Andes
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2000
Paleozoic Of Western Gondwana Active Margin Bolivian Andes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Basins (Geology) categories.
West Gondwana
DOWNLOAD
Author : Robert J. Pankhurst
language : en
Publisher: Geological Society of London
Release Date : 2008
West Gondwana written by Robert J. Pankhurst and has been published by Geological Society of London this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Science categories.
Marie Byrd Land West Antarctica
DOWNLOAD
Author : S.B. MUKASA
language : en
Publisher:
Release Date : 2000
Marie Byrd Land West Antarctica written by S.B. MUKASA and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.