Journal ArticleDOI
Paleomagnetic constraints on the Mesozoic drift of the Lhasa terrane (Tibet) from Gondwana to Eurasia
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TLDR
In this paper, the authors provide a new, high-quality, well-dated paleomagnetic pole from the ca. 180 Ma Sangri Group volcanic rocks of the Lhasa terrane that yields a paleolatitude of 3.7°S ± 3.4°.Abstract:
The Mesozoic plate tectonic history of Gondwana-derived crustal blocks of the Tibetan Plateau is hotly debated, but so far, paleomagnetic constraints quantifying their paleolatitude drift history remain sparse. Here, we compile existing data published mainly in Chinese literature and provide a new, high-quality, well-dated paleomagnetic pole from the ca. 180 Ma Sangri Group volcanic rocks of the Lhasa terrane that yields a paleolatitude of 3.7°S ± 3.4°. This new pole confirms a trend in the data that suggests that Lhasa drifted away from Gondwana in Late Triassic time, instead of Permian time as widely perceived. A total northward drift of ∼4500 km between ca. 220 and ca. 130 Ma yields an average south-north plate motion rate of 5 cm/yr. Our results are consistent with either an Indian or an Australian provenance of Lhasa.read more
Citations
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The Lhasa Terrane: Record of a microcontinent and its histories of drift and growth
Di-Cheng Zhu,Zhidan Zhao,Yaoling Niu,Yaoling Niu,Yaoling Niu,Xuanxue Mo,Sun-Lin Chung,Zengqian Hou,Li-Quan Wang,Fu-Yuan Wu +9 more
TL;DR: Using zircon in situ U-Pb and Lu-Hf isotopic and bulk-rock geochemical data of Mesozoic-Early Tertiary magmatic rocks sampled along four north-south traverses across the Lhasa Terrane, Wang et al. as discussed by the authors showed that the Lhaasa terrane has ancient basement rocks of Proterozoic and Archean ages (up to 2870 Ma) in its centre with younger and juvenile crust (Phanerozoic) accreted towards its both northern and southern edges.
Plate Tectonics in the Late Paleozoic
Mathew Domeier,Trond H. Torsvik +1 more
TL;DR: In this paper, a model for the late Paleozoic (410-250 million years ago) is presented, together with a review of the underlying data, which can be used for numerical mantle modeling, and serve as a general framework for understanding late paleozoic tectonics.
Journal ArticleDOI
Atlas of the underworld : Slab remnants in the mantle, their sinking history, and a new outlook on lower mantle viscosity
Douwe G. van der Meer,Douwe G. van der Meer,Douwe J.J. van Hinsbergen,Wim Spakman,Wim Spakman +4 more
TL;DR: The Atlas of the Underworld as discussed by the authors is a compilation comprising subduction systems active in the past ~300Myr, assuming no relative horizontal motions between adjacent slabs following break-off, but without assuming a mantle reference frame.
Journal ArticleDOI
Extending full-plate tectonic models into deep time: Linking the Neoproterozoic and the Phanerozoic
Andrew Merdith,Simon Williams,Alan S. Collins,Michael G. Tetley,Jacob A. Mulder,Morgan L. Blades,Alexander S. Young,Sheree Armistead,John Cannon,Sabin Zahirovic,R. Dietmar Müller +10 more
TL;DR: For the first time, a continuous full-plate model spanning 1 Ga to the present day was presented in this paper, which includes a revised and improved model for the Neoproterozoic-Cambrian (1000-520 Ma) that connects with models of the Phanerozoic.
References
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A plate tectonic model for the Paleozoic and Mesozoic constrained by dynamic plate boundaries and restored synthetic oceanic isochrons
TL;DR: In this article, a plate tectonic model for the Paleozoic and Mesozoic (Ordovician to Cretaceous) integrating dynamic plate boundaries, plate buoyancy, ocean spreading rates and major Tectonic and magmatic events was developed.
Journal ArticleDOI
Global continental and ocean basin reconstructions since 200 Ma
Maria Seton,Ralph Müller,Sabin Zahirovic,Carmen Gaina,Trond H. Torsvik,Grace E. Shephard,A.S. Talsma,Michael Gurnis,M. Turner,Stefan Maus,Michael T. Chandler +10 more
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Journal ArticleDOI
Classification of the reversal test in palaeomagnetism
P. L. McFadden,M. W. McElhinny +1 more
TL;DR: In this paper, it is suggested that positive reversal tests should be classified according to the amount of information that was available for the test, which is readily indicated by the critical angle (e.g., at the 95 per cent confidence level) between the two sample mean directions at which the hypothesis of common mean direction for the distributions would be rejected.