Constraints On The Tectonic Evolution Of The Yidun Arc Eastern Tibetan Plateau
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Constraints On The Tectonic Evolution Of The Yidun Arc Eastern Tibetan Plateau
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Author : Anthony John Reid
language : en
Publisher:
Release Date : 2003
Constraints On The Tectonic Evolution Of The Yidun Arc Eastern Tibetan Plateau written by Anthony John Reid and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Geology categories.
Magmatic And Sedimentary Constraints On The Evolution Of The Triassic Yidun Arc Eastern Tibet
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Author : Baiqiu Wang
language : en
Publisher: Open Dissertation Press
Release Date : 2017-01-26
Magmatic And Sedimentary Constraints On The Evolution Of The Triassic Yidun Arc Eastern Tibet written by Baiqiu Wang and has been published by Open Dissertation Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-26 with categories.
This dissertation, "Magmatic and Sedimentary Constraints on the Evolution of the Triassic Yidun Arc, Eastern Tibet" by Baiqiu, Wang, 王伯秋, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The Yidun Terrane in the eastern Tibetan plateau is separated from the Songpan-Ganzi Terrane by the Ganzi-Litang suture zone to the east and Qiangtang Block by the Jinsha suture zone to the west. Both suture zones are marked by eastern Paleo-Tethyan ophiolites. The western part of the Yidun Terrane, the Zhongza Massif, is dominated by Paleozoic sedimentary sequences. In the eastern part, Triassic subduction-related plutonic rocks and volcanic-flysch successions of the Yidun Group are important elements for understanding the evolution of eastern Paleo-Tethys and amalgamation of East Asia. The Yidun Group includes the Lieyi, Qugasi, Tumugou and Lanashan Formations from base upwards. Two major depocenters for the Yidun Group can be recognized. Sedimentary detritus supplying for the northern depocenter were dominantly sourced from the Zhongza Massif and received recycling components in a passive margin setting. In the southern depocenter, the Qugasi Formation accumulated materials from the Zhongza Massif, whereas the Tumugou Formation received additional materials from locally distributed Triassic arc rocks and crystalline basement rocks, which indicates transition from a passive margin to a magmatic arc setting. In the southern Yidun Terrane, (quartz-) dioritic hypabyssal intrusions are spatially associated with andesites and dacites and have zircon U-Pb ages from 230 to 215 Ma. They have adakitic geochemical features and are divided into the 230-215 Ma high silica (HSA) and 215 Ma low silica (LSA) adakitic rocks. The HSA formed from subducted slab melts with limited interaction with the overlying mantle wedge, whereas the LSA were generated from slab melts with more extensive interaction with mantle due to slab break-off at 215 Ma. In the northern Yidun Terrane, granitic plutons and volcanic rocks occur in two parallel N-S belts. The 228 Ma volcanic rocks in the Xiangcheng region are adakites generated from slab melts, whereas the 231-230 Ma volcanic rocks in the Changtai region, including basalts, andesites, dacites and rhyolites, formed in a back-arc setting. The Changtai basalts were produced by low degrees of partial melting of an OIB-like mantle source with minor involvement of subducted slab components. The Changtai andesites/dacites represent evolved members from the basaltic magmas through an AFC process, whereas the rhyolites formed from anatexis of a garnet-bearing crustal source. These volcanic rocks are 4-6 mys older than arc granitic rocks in the northern Yidun Terrane. The spatio-temporal framework of all the subdution-related igneous rocks suggests initiation of subduction of the Ganzi-Litang oceanic lithophere under the southern Yidun Terrane at 230 Ma, resulting in the adakitic magmatism in the Shangri-La and Xiangcheng regions and the back-arc magmatism in the Changtai region. Subsequently at 224 Ma, the subduction extended to the northern Yidun Terrane, leading to the formation of the arc granitic plutons. From south to north, the Yidun Terrane was sequentially amalgamated with the Songpan-Ganzi Terrane during the Late Triassic. DOI: 10.5353/th_b5060571 Subjects: Geology - Tibet, Plateau of
Growth And Collapse Of The Tibetan Plateau
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Author : Richard Gloaguen
language : en
Publisher: Geological Society of London
Release Date : 2011
Growth And Collapse Of The Tibetan Plateau written by Richard Gloaguen 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 2011 with Boundary layer (Meteorology) categories.
Despite agreement on first-order features and mechanisms, critical aspects of the origin and evolution of the Tibetan Plateau, such as the exact timing and nature of collision, the initiation of plateau uplift, and the evolution of its height and width, are disputed, untested or unknown. This book gathers papers dealing with the growth and collapse of the Tibetan Plateau. The timing, the underlying mechanisms, their interactions and the induced surface shaping, contributing to the Tibetan Plateau evolution are tightly linked via coupled and feedback processes. We present interdisciplinary contributions allowing insight into the complex interactions between lithospheric dynamics, topography building, erosion, hydrological processes and atmospheric coupling. The book is structured in four parts: early processes in the plateau formation; recent growth of the Tibetan Plateau; mechanisms of plateau growth; and plateau uplift, surface processes and the monsoon.
Tectonics Of The Southeastern Tibetan Plateau And Its Adjacent Foreland
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Author : B. C. Burchfiel
language : en
Publisher: Geological Society of America
Release Date : 2012-01-01
Tectonics Of The Southeastern Tibetan Plateau And Its Adjacent Foreland written by B. C. Burchfiel and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-01 with Science categories.
"This volume provides a summary of the geology of Eastern and Southeastern Tibet and its foreland. It covers an area of approximately 1.5 million square kilometers in 15 chapters on tectonic units that the authors recognize during 25 years of both field and laboratory study. Each chapter discusses the authors' understanding of the geology and offers interpretations of special geological relations, both local and regional, as well as currently unresolved problems of which there are many in this vast and poorly known region. Chapter 16 summarizes and interprets the preceding chapters. The volume is accompanied by CDs containing four plates: two tectonostratigraphic maps, a map of unconformities and a plate of cross sections, in both Illustrator and ArcGIS formats. This is a unique map presentation and one that the authors suggest as a model for all geological maps"--Provided by publisher.
Geological Evolution Of Central Asian Basins And The Western Tien Shan Range
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Author : Marie-Franc̦oise Brunet
language : en
Publisher: Geological Society of London
Release Date : 2017-10-10
Geological Evolution Of Central Asian Basins And The Western Tien Shan Range written by Marie-Franc̦oise Brunet 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 2017-10-10 with Science categories.
The geological evolution of Central Asia commenced with the formation of a complex Precambrian–Palaeozoic orogen. Cimmerian blocks were then accreted to the southern margin in the Mesozoic, leading to tectonic reactivation of older structures and discrete episodes of basin formation. The Indian and Arabian blocks collided with Asia in the Cenozoic, leading to renewed structural reactivation, intracontinental deformation and basin development. This complex evolution resulted in the present-day setting of an elongated Tien Shan range flanked by large Mesozoic–Cenozoic sedimentary basins with smaller intramontane basins distributed within the range. This volume presents multidisciplinary results and reviews from research groups in Europe and Central Asia that focus on the western part of the Tien Shan and some of the adjacent large sedimentary basins. These works elucidate the Late Palaeozoic–Cenozoic tectono-sedimentary evolution of the area. Emphasis is given to the collision of terranes and continents and the ensuing fault reactivations. The impact of climatic changes on sedimentation is also examined.
Sichuan Tibet Traffic Corridor Fundamental Geological Investigations And Resource Endowment
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Author : Qiuming Pei
language : en
Publisher: Frontiers Media SA
Release Date : 2023-06-05
Sichuan Tibet Traffic Corridor Fundamental Geological Investigations And Resource Endowment written by Qiuming Pei and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-06-05 with Science categories.
Investigations Into The Tectonics Of The Tibetan Plateau
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Author : B. C. Burchfiel
language : en
Publisher: Geological Society of America
Release Date : 2008
Investigations Into The Tectonics Of The Tibetan Plateau written by B. C. Burchfiel and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Science categories.
"This volume includes a variety of papers on the tectonics of the Tibetan Plateau and the Iranian Plateau that were presented at the first joint meeting between the Geological Society of America and the Chinese Academy of Sciences. Each paper deals with a different aspect of the geology and/or the geophysics of the tectonic evolution of the plateau. Although most of the papers discuss areas in the northeastern part of the plateau, one concentrates on the complexity of the Cenozoic shear zones in Yunnan and one focuses on the late Cenozoic extensional tectonism along the western margin of the Iranian Plateau. Several papers discuss aspects of Tibetan tectonics not covered in any other papers and arrive at unique interpretations."--Publisher's website.
Uplift Mechanisms And The History Of The Tibetan Plateau
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Author : Junsheng Nie
language : en
Publisher: Geological Society of America
Release Date : 2014
Uplift Mechanisms And The History Of The Tibetan Plateau written by Junsheng Nie and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Science categories.
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Aspects Of The Tectonic Evolution Of China
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Author : J. Malpas
language : en
Publisher: Geological Society of London
Release Date : 2004
Aspects Of The Tectonic Evolution Of China written by J. Malpas 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 2004 with Science categories.
This volume provides accounts of up-to-date research by Chinese and international geological teams on key aspects of the tectonic evolution of China and its surrounding areas. The papers describe the formation of the geological terranes that make up this part of east Asia, place constraints on plate tectonic models for their assembly and provide accounts of unique geological feature of the subcontinent.
The Tectonic Evolution Of The Eastern Kunlun Range And The Central Tibetan Plateau China
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Author : Michael William McRivette
language : en
Publisher:
Release Date : 2011
The Tectonic Evolution Of The Eastern Kunlun Range And The Central Tibetan Plateau China written by Michael William McRivette and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.