Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton PDF Download
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Author: Wei Wang
Publisher: Springer
ISBN: 9811079226
Category : Science
Languages : en
Pages : 320
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Book Description
This thesis presents geological, petrological, geochemical, and zircon U–Pb–Lu–Hf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64–2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72–1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ~1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (~2.6–1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time –aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.
Author: Wei Wang
Publisher: Springer
ISBN: 9811079226
Category : Science
Languages : en
Pages : 320
Get Book Here
Book Description
This thesis presents geological, petrological, geochemical, and zircon U–Pb–Lu–Hf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64–2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72–1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ~1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (~2.6–1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time –aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.
Author: Wei Wang
Publisher:
ISBN: 9789811079238
Category : Cratons
Languages : en
Pages :
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Book Description
This thesis presents geological, petrological, geochemical, and zircon U?Pb?Lu?Hf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64?2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72?1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ̃1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (̃2.6?1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time?aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.
Author: Mingguo Zhai
Publisher: Elsevier
ISBN: 0443138885
Category : Science
Languages : en
Pages : 330
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Book Description
Early Continent Evolution of the North China Craton discusses the tectono-thermal regimes of the early continental crust in the North China Craton (NCC) from the Hadean to the early Paleoproterozoic, reconstructing the evolutional framework, and facilitating comprehensive understanding of the early continent evolution of the NCC. The book systematically summarizes the Neoarchean metamorphism of the NCC and discusses the implications for the tectonic models of the NCC, through compiling evolutional information of the Hadean to the early Paleoproterozoic sequences in the NCC. This allows for comprehensive summarizations and discussions on the tectonic framework of the NCC during this critical period. Researchers, academics and students in geology (especially Precambrian Geology), geomorphology, geophysics and geological engineering will benefit from using this book in applying tectonic models to other cratonic blocks globally, and will understand evolutional information of the largest and oldest cratonic block in China. Completely covers all key issues and research frontiers of the early continental evolution of the North China Craton (NCC), from the Hadean to the early Paleoproterozoic Systematically summarizes the Neoarchaean metamorphism of the NCC and discusses the implications for tectonic models Includes discussion on controversial views on tectonic regimes of the NCC during the Archean to early Paleoproterozoic, with objective conclusions
Author: Mingguo Zhai
Publisher: Springer
ISBN: 3662478854
Category : Science
Languages : en
Pages : 389
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Book Description
This book is the first contribution to the overview of Precambrian geology of China. It covers Precambrian geology of the North China Craton, the South China Craton and the Tarim Craton, as well as other smaller blocks in the Chinese orogenic belts. It provides systematic concepts of the Chinese paleo-continents and incorporates the most up-to-date achievements. Edited by many of the active researchers working at the forefront of the related fields, it contributes greatly to the international Precambrian geology community and would be of interest to geoscientists working in the research field of geology of China and Precambrian geodynamics.
Author: Kent C. Condie
Publisher:
ISBN: 9780444816214
Category : Earth
Languages : en
Pages : 528
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Book Description
Author: N.M.W. Roberts
Publisher: Geological Society of London
ISBN: 1862393753
Category : Science
Languages : en
Pages : 356
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Book Description
The continental crust is our archive of Earth history, and the store of many natural resources; however, many key questions about its formation and evolution remain debated and unresolved: What processed are involved in the formation, differentiation and evolution of continental crust, and how have these changed throughout Earth history?How are plate tectonics, the supercontinent cycle and mantle cooling linked with crustal evolution?What are the rates of generation and destruction of the continental crust through time?How representative is the preserved geological record? A range of approaches are used to address these questions, including field-based studies, petrology and geochemistry, geophysical methods, palaeomagnetism, whole-rock and accessory-phase isotope chemistry and geochronology. Case studies range from the Eoarchaean to Phanerozoic, and cover many different cratons and orogenic belts from across the continents.
Author: Meiling Wu
Publisher: Open Dissertation Press
ISBN: 9781361331453
Category :
Languages : en
Pages :
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Book Description
This dissertation, "Ages, Geochemistry and Metamorphism of the Neoarchean Basement in Shandong Province: Implications for Evolution of the Eastern Block, North China Craton" by Meiling, Wu, 吴美玲, 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 Archean basement rocks in Shandong Province are important components of the Eastern Block in the North China Craton, consisting predominantly of granitoid gneisses with minor mafic and felsic supracrustal rocks and charnockites. They are exposed, from west to east, in the Luxi Granite-Greenstone Terrane, Yishui Terrane and Jiaodong Terrane, of which the low-grade Luxi Granite-Greenstone Terrane has been well studied, whereas little work has been done on the medium- to high-grade Yishui and Jiaodong Terranes. Controversies have long surrounded the timing of crustal growth and tectonic setting of these two terranes. This project is designed to resolve these issues by integrating field investigations, petrography, geochronology, geochemistry and metamorphism of the Yishui and Jiaodong Terranes. New zircon U-Pb data from the major lithologies have revealed that the Jiaodong Terrane experienced multi-stage magmatism at 2.9 Ga, 2.7 Ga and 2.6-2.5 Ga followed by two metamorphic events at 2.50 Ga and 1.9-1.8 Ga, whereas the Yishui Terrane underwent single magmatism at 2.57-2.53 Ga followed by a single metamorphic event at 2.50 Ga. Zircon Hf isotopic data have revealed that the Jiaodong Terrane underwent juvenile crustal growth with significant ancient crustal material additions at 3.4-3.1 and 2.8-2.7 Ga, while the Yishui Terrane experienced juvenile crustal growth with significant addition of crustal material at 2.8-2.7 Ga. Both the Jiaodong and Yishui Terranes experienced crustal reworking with minor juvenile additions at 2.6-2.5 Ga. Whole-rock compositions and Nd isotopes from the Jiaodong granitoid gneisses suggest that their protoliths are typical Archean tonalitic-trondhjemitic-granodioritic (TTG) suite. They are high in SiO2, Al2O3, Na2O, Sr and Sr/Y ratios, but low in MgO, K2O, TiO2, Cr, Ni, Y and Mg#. They are generally enriched in light rare earth elements and large ion lithophile elements, depleted in heavy rare earth elements and high field strength elements, with slight Eu anomalies. Two groups of granitoid gneisses have been recognized: low- and high-HREE groups, of which the former was generated from partial melting of metabasaltic rocks leaving eclogite in the residue, whereas the latter was formed by partial melting of metabasaltic rocks leaving garnet-amphibolite in the residue. Whole-rock Nd isotopes reveal that the protoliths of Mesoarchean granitoid gneisses were derived mainly from juvenile sources, whereas the early Neoarchean granitoid gneisses were derived from juvenile sources with significant additions of crustal material and the late Neoarchean granitoid gneisses were mainly derived from continental crustal sources. These features indicate that the protoliths of the Jiaodong granitoid gneisses were possibly formed by partial melting of thickened lower crust related to underplating of mafic magmas. Mafic granulites ( 2.50 Ga) of the Yishui Terrane show three distinct mineral assemblages corresponding to the pre-peak, peak and post-peak metamorphic stages, with P-T conditions constrained at 660-730℃/
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: M. Frey
Publisher: John Wiley & Sons
ISBN: 1444313339
Category : Science
Languages : en
Pages : 325
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Book Description
Low-Grade Metamorphism explores processes and transformations in rocks during the early stages of metamorphic recrystallization. There has been little analysis and documentation of this widespread phenomenon, especially of the substantial and exciting advances that have taken place in the subject over the last decade. This book rectifies that shortfall, building on the foundations of Low-Temperature Metamorphism by Martin Frey (1987). The editors have invited contributions from an internationally acknowledged team of experts, who have aimed the book at advanced undergraduate and graduate students as well as researchers in the field. Contributions from internationally acknowledged experts. Documents the substantial and exciting advances that have taken place in the subject over the last decade.
Author: J. Malpas
Publisher: Geological Society of London
ISBN: 9781862391567
Category : Science
Languages : en
Pages : 372
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Book Description
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.
