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Thermochemchronological And Structural Insights Into The Mesozoic Cenozoic Tectonic Evolution Of The Eastern Tibetan Plateau
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Book Synopsis Thermochemchronological and Structural Insights Into the Mesozoic-Cenozoic Tectonic Evolution of the Eastern Tibetan Plateau by : Yuntao Tian
Download or read book Thermochemchronological and Structural Insights Into the Mesozoic-Cenozoic Tectonic Evolution of the Eastern Tibetan Plateau written by Yuntao Tian and published by . This book was released on 2013 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Paleozoic and Mesozoic tectonic evolution of central and eastern Asia by : Gregory Arlen Davis
Download or read book Paleozoic and Mesozoic tectonic evolution of central and eastern Asia written by Gregory Arlen Davis and published by Geological Society of America. This book was released on 2001 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hendrix (geology, U. of Montana) and Davis (earth sciences, U. of Southern California) present 19 articles detailing ground-based work on the history of assembly and intracontinental deformation of central and eastern Asia. Chapters look at the structural, thermochronologic, and sedimentary records of the history of Paleozoic assembly in Mongolia and central and western China. Further information is presented on Mesozoic deformation in orogenic belts of central and eastern Asia. Asia's sedimentary basins are examined and the intracontinental deformation they record is documented. Many of these contributions, particularly the papers examining Mongolian geology, are the first ground-based articles written in English. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Book Synopsis Investigations Into the Tectonics of the Tibetan Plateau by : B. C. Burchfiel
Download or read book Investigations Into the Tectonics of the Tibetan Plateau written by B. C. Burchfiel and published by Geological Society of America. This book was released on 2008 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis Tectonic Evolution of the Easternmost Himalayan Collisional System by : Peter Jasura Haproff
Download or read book Tectonic Evolution of the Easternmost Himalayan Collisional System written by Peter Jasura Haproff and published by . This book was released on 2018 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cenozoic India-Asia collision generated the Tibetan Plateau and the Himalayan collisional system, the latter consisting of the convergence-perpendicular Himalayan orogen and the convergence-parallel Eastern and Western Flanking Belts located along the margins of India. Studying the evolution of each of these tectonic domains is critical to understanding the collision process and differentiating the end-member models of indenter-induced continental deformation. Despite this importance, there is a notable lack of geologic investigations on the development of the flanking belts in comparison to the extensive research of the Tibetan Plateau and east-trending Himalayan orogen. To address this problem, the research of this dissertation is focused on the Mesozoic-Cenozoic tectonic evolution of the northernmost segment of the Eastern Flanking Belt, the northern Indo-Burma Ranges, which are located directly east to southeast of the eastern Himalayan syntaxis. In the following chapters, I integrate the results of geologic field mapping, balanced cross section construction and restoration, U-Pb zircon geochronology, whole-rock geochemistry, thermobarometry, and (U-Th)/He zircon thermochronology to examine the litho-structural framework of the northern Indo-Burma Ranges and tectonic relationships in time and space with the adjacent eastern Himalayan orogen, the southern Tibetan Plateau, and the Eastern Flanking Belt. The research of this dissertation shows that the study area exposes a southwest- to west-directed Cenozoic thrust belt cored by a hinterland-dipping duplex system. Thrust faults sole into a northeast- to east-dipping di collement, which extends to >30 km depth. Southwestward forward propagation of the thrust belt in the foreland was coeval with out-of-sequence thrusting in the hinterland. This structural framework combined with the observed southward deflection in the trends of ductile stretching lineations within shear zones (northeast-trending in the north and east-trending in the south) suggest deformation around the eastern Himalayan syntaxis is best approximated by models of clockwise lithospheric flow accommodated by distributed thrusting. Major lithologic units involved in the northern Indo-Burma thrust belt from south to north include the easternmost continuations of the Tertiary Sub-Himalayan Sequence, Proterozoic-Cambrian Lesser Himalayan Sequence, and Indus-Yarlung suture zone of the Himalayan orogen and the Mesozoic northern Gangdese batholith belt and Mesoproterozoic basement of the Lhasa terrane. However, several Himalayan-Tibetan lithologic units are missing, including the Paleoproterozoic-Ordovician Greater Himalayan Crystalline Complex, Proterozoic-Eocene Tethyan Himalayan Sequence, Mesozoic-Cenozoic Xigaze forearc basin, and Cenozoic igneous rocks of the southern Gangdese batholith. Research suggests that these units were present in the study area at the onset of the Cenozoic India-Asia collision and their present-day absence is related to an eastward increase in post-collisional crustal shortening and continental underthrusting along the Himalayan collisional system. This interpretation is supported by a Cenozoic shortening strain estimate of ~81% (>156 km) across the northern Indo-Burma Ranges and a dramatic southward decrease in the width of the collisional system from ~200 km across the Himalayan orogen to ~5 km across the study area. Active deformation across the northern Indo-Burma Ranges and adjacent southeastern Tibetan Plateau is characterized by right-slip transpression partitioned between the range-bounding, oblique-slip Mishmi thrust in the southwest and right-slip Puqu and Parlung faults of Jiali fault zone in the northeast. The leading Mishmi thrust is kinematically-linked with the ~1000-km-long, right-slip Sagaing fault to the south via a previously-unmapped, southwest-trending restraining bend. This structural relationship of the Eastern Flanking Belt provides a key example of the spatial transition from transpressional deformation near the corner of an indenter to discrete right-slip motion along the side of an indenter during continental collision.
Book Synopsis Tectonic and Stratigraphic Evolution of Zagros and Makran During the Mesozoic-Cenozoic by : Pascale Leturmy
Download or read book Tectonic and Stratigraphic Evolution of Zagros and Makran During the Mesozoic-Cenozoic written by Pascale Leturmy and published by Geological Society of London. This book was released on 2010 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Zagros fold-thrust belt (ZFTB) extends from Turkey to the Hormuz Strait, resulting from the collision of the Arabian and Eurasian plates during Cenozoic times, and separates the Arabian platform from the large plateaux of central Iran. In this volume the structure of the Zagros Mountains is explored through different scales and using different methodologies.
Book Synopsis Tectonics of the Southeastern Tibetan Plateau and Its Adjacent Foreland by : B. C. Burchfiel
Download or read book Tectonics of the Southeastern Tibetan Plateau and Its Adjacent Foreland written by B. C. Burchfiel and published by Geological Society of America. This book was released on 2012-01-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis Insights Into Cenozoic Tectonics and Climate Change in Northern Tibetan Plateau from Basin Analysis, Thermochronology, and Isotopic Study by : Guangsheng Zhuang
Download or read book Insights Into Cenozoic Tectonics and Climate Change in Northern Tibetan Plateau from Basin Analysis, Thermochronology, and Isotopic Study written by Guangsheng Zhuang and published by . This book was released on 2011 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Tectonic Evolution of Asia by : An Yin
Download or read book The Tectonic Evolution of Asia written by An Yin and published by . This book was released on 1996-01-01 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of Asia has largely occurred over the last 400 million years, and continues today. Seeing a continent in the act of assembly provides a rare opportunity to study the processes by which continents are constructed and internally modified. This book is a collection of twenty-one contributions on the tectonic evolution of Asia. The book is divided into five parts: geodynamic models of the Cenozoic deformation in Asia, seismotectonics, geological evolution of the Himalaya–Karakoram Ranges, tectonics of the Cenozoic Indo–Asia collision, and Mesozoic–Paleozoic assembly of Asia. Several important problems are addressed in detail, including the origin of the Tibetan Plateau, the nature of ultra-high pressure metamorphism in east-central Asia, the accretion of microcontinents to Asia, and the accommodation mechanisms of the Indo-Asian collision. The Tectonic Evolution of Asia provides an authoritative description of our current understanding of Asian tectonics and continental growth for graduate students and researchers.
Book Synopsis Mesozoic tectonic evolution of the Longmenshan thrust belt, East Tibet by : Zhenhua Xue
Download or read book Mesozoic tectonic evolution of the Longmenshan thrust belt, East Tibet written by Zhenhua Xue and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Longmenshan Thrust Belt (LMTB), constituting the eastern boundary of the Tibetan Plateau, is well known by its steep topography, intensive tectonic activities and the complicated structures. As a typical composite orogen, the LMTB experienced extensive intracontinental deformation during the Mesozoic. The knowledge on the Mesozoic tectonic evolution of the LMTB therefore is crucial to understand the intracontinental orogeny and uplifting of the Plateau. The vertical cleavage belt divides the LMTB into a Western Zone and an Eastern Zone. The Eastern Zone displays a top-to-the-SE shearing while the western zone a top-to-the-NW shearing. The Eastern Zone can be further divided into four subunits with foliations deepening from SE to NW. The syntectonic granite and published geochronologic data constrain this main deformation to the Early Mesozoic around 219 Ma. Structural analysis, AMS and microstructural study and gravity modeling on the Pengguan complex, one of the orogen-parallel Neoproterozoic complexes located in the middle segment of the LMTB, reveal a basement-slice imbricated structure of the LMTB and adjacent areas. Published ages, localized fast exhumation rate and flexural subsidence of the foreland basin suggest that the basement-slices imbricated southeastwards during Late Mesozoic (166-120 Ma). The LMTB is far away from the contemporaneous plate boundary and devoid of ophiolite-related material, therefore, it is supposed to be an intracontinental orogen. During the Early Mesozoic, the Yangtze basement underthrusted westwards due to the far-field effect of the Paleo-Tethys' obliteration, and the materials in different structural levels have been exhumated to the surface by southeastward thrusting and contemporaneous backward thrusting. During the Late Mesozoic, the basement is further underthrusted due to the collision between the Lhasa and Eurasia blocks, which led to SE-ward imbrication of the basementslices that may thicken the crust.
Book Synopsis Tectonic Evolution of the Northeastern Tibetan Plateau by : Andrew Vincent Zuza
Download or read book Tectonic Evolution of the Northeastern Tibetan Plateau written by Andrew Vincent Zuza and published by . This book was released on 2016 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the Tibetan Plateau was constructed and evolved in response to ongoing India-Asia convergence since 65-55 Ma is fundamental in understanding processes of continental tectonics. Furthermore, the kinematics and mechanisms of plateau formation and continental deformation have implications for the complex interactions between tectonics, erosion, and climate change in Earth's most recent history. To provide insights into these processes, my research is focused on the development of the northern margin of the Tibetan Plateau, which is defined by the 350-km-wide and 1300-km-long Cenozoic Qilian Shan-Nan Shan thrust belt. This active fold and thrust system overprinted a region that has a complex pre-Cenozoic tectonic history involving multiple phases of Proterozoic basement deformation and early Paleozoic orogeny. In this work, I integrate geologic mapping, balanced cross section construction and restoration, seismic reflection interpretation, geochronology, thermobarometry, geodetic data analysis, and analogue modeling to investigate the tectonic development of northern Tibet over a range of timescales, from the Proterozoic evolution of central Asian cratons to the active deformation that is shaping the northern margin of the Tibetan Plateau. The magnitude, style, and distribution of Cenozoic shortening strain across northern Tibet can be used to test competing models of continental deformation. The shortening distribution across the Qilian Shan-Nan Shan thrust belt, derived from surface mapping and subsurface seismic reflection profiles, suggests that the modern thickness and elevation of the northern plateau has developed as a result of southward continental underthrusting of Asia beneath Tibet and distributed crustal thickening. The thrust systems in northern Tibet link to the east with > ~1000-km-long parallel left-slip strike-slip faults (i.e., the Haiyuan, Qinling, and Kunlun faults). The along-strike variation of fault offsets and pervasive off-fault deformation along these strike-slip faults create a strain pattern that departs from the expectations of the classic plate-like rigid-body motion and flow-like distributed deformation models of continental deformation. Instead, I propose that the major strike-slip faults formed as a non-rigid bookshelf-fault system where clockwise rotation of northern Tibet drives left-slip bookshelf faulting and related off-strike-slip fault deformation. In addition, I employ a stress-shadow model that uses the characteristic spacing of strike-slip faults and seismogenic-zone thickness estimates across northern Tibet and central Asia to estimate fault strength and the regional stress state. The strike-slip faults in Asia have a low coefficient of fault friction (~0.15), which may explain why deformation penetrates more than 3500 km into Asia from the Himalayan collisional front, and why the interior of Asia is prone to large (M > 7.0) devastating earthquakes along major strike-slip faults. A well-constrained understanding of Cenozoic deformation across northern Tibet allows for better reconstructions of the Proterozoic and Paleozoic tectonics. Field relationships and geochronologic studies reveal that the early Paleozoic Qilian suture, which bounds the southern margin of the North China craton, records the Ordovician-early Silurian closure of the Qilian Ocean via south-dipping subduction beneath the Qaidam continent. The evolution of this ocean and North China's southern margin has implications for reconstructions of Neoproterozoic and Paleozoic Earth, including the development of the Tethyan and Paleo-Asian Oceanic Domains. By restoring the Phanerozoic deformation along the northern and southern margins of the Tarim and North China cratons, I propose and test a hypothesis that these cratons once stretched westward across present-day Asia, possibly as far west as Baltica, as a continuous Neoproterozoic continent.
Book Synopsis Nonmarine Stratigraphic Successions in the Yidun Terrane by : William Thomas Jackson
Download or read book Nonmarine Stratigraphic Successions in the Yidun Terrane written by William Thomas Jackson and published by . This book was released on 2017 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tibetan Plateau is the largest and highest plateau on Earth, covering> 2,500,000 km2 with an average elevation> 4,500 m. The plateau's present crustal configuration is a product of the Early Cenozoic India-Asia collision as well as similar Mesozoic collisions along the southern margin of Eurasia. The spatial and temporal relationship of Mesozoic and Early Cenozoic deformation resulting from collisions are required parameters to advance understanding of the plateau's rise and outgrowth evolution. Nonmarine strata in interior parts of the plateau provide records of this deformation; however, in the eastern Tibetan Plateau these strata remain unexplored. This dissertation presents structural and sedimentological field data, detrital zircon U-Pb geochronology and Hf isotope geochemistry, as well as petrology data from the Mula basin, west Ganzi basin, east Ganzi basin, and Ganzi-Litang suture to determine the stratigraphic age, sedimentary provenance, and tectonic setting of the nonmarine strata in the Yidun terrane, eastern Tibetan Plateau. Weighted mean averages from the youngest detrital zircon age populations suggest that the Mula basin and nonmarine strata in the Ganzi-Litang suture are Early Cenozoic, while the west Ganzi basin and east Ganzi basin are Mesozoic. Sedimentary provenance analyses show that Early Cenozoic strata were sourced locally, whereas Mesozoic strata indicate regional sourcing. Basin-bounding fault characteristics demonstrate that deformation and nonmarine deposition were associated with compressional tectonic settings for both the Mesozoic and Cenozoic basins. Integration of data from this dissertation illustrates that a fold-thrust belt developed in Mesozoic and Early Cenozoic time near the Late Triassic Ganzi-Litang suture throughout the eastern Yidun terrane. The Late Triassic Ganzi-Litang suture was structurally reactivated by subsequent Mesozoic and Cenozoic collisions along the southern margin of Eurasia, suggesting that the spatial evolution of deformation in the eastern Tibetan Plateau was controlled by the presence of crustal weaknesses. In addition, this dissertation establishes the stratigraphic architecture for nonmarine strata in the Yidun terrane, providing the stimulus for regional correlations that further clarify the timing and style of deformation throughout the eastern Tibetan Plateau.
