Results 41 to 50 of about 206 (165)

Congruent Weathering of Continental Silicates During Warm Periods: Evidence From Lithium Isotopes in Marine Sediments

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Dissolution of secondary clay minerals during continental weathering (hereafter clay dissolution) has been proposed as a mechanism to explain some of the low seawater lithium isotopic ratios (δ7Li) observed in the geologic past. However, direct evidence for clay dissolution on Earth surface remains limited, and the controlling factors are ...
Zhewen Xu, Ruoshui Wang, Lianwen Liu, Jingxian Li, Junfeng Ji, Jun Chen, Gaojun Li   +6 more
wiley   +1 more source

Seismological Evidence for Crustal Thinning and Melting Beneath the Leiqiong Volcanic Area, South China: Implications for Plume‐Lithosphere Interaction at a Passive Continental Margin

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Both mantle plumes and passive margin extension have been recognized as crucial mechanisms governing intracontinental volcanism and lithospheric evolution. However, the synergistic interactions between these two processes in modulating lithospheric modification remain poorly constrained.
Zhou Zhang, Yangfan Deng, Yi‐Gang Xu, Xin Li, Jinchang Zhang   +4 more
wiley   +1 more source

New Permian Paleomagnetic and Geochronologic Results From the Alxa Block: Constraints on Its Tectonic Affinity and the Closure of Paleo‐Asian Ocean

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The Paleo‐Asian Ocean's (PAO) closure timing and the Alxa Block's (ALB) tectonic affinity remain debated. We present new paleomagnetic and geochronologic data from Permian volcanic and sedimentary rocks in the ALB. Characteristic remanent magnetization (ChRM) directions from Early (∼282 Ma), Middle (∼268 Ma), and Late Permian (∼255 Ma) rocks ...
Wei Xu, Bo Song, Jizhong Shi, Yan Li, Baowen Wang, Xiaozhou Ye, Xiaofeng Han, Haihong Xu, Yunpeng Zhang, Huiyuan Zhang, Zhiming Sun   +10 more
wiley   +1 more source

Source‐To‐Sink Links Between East Asia and Taiwan From Detrital Zircon Geochronology of the Oligocene Huagang Formation in the East China Sea Shelf Basin

Geochemistry, Geophysics, Geosystems, 2018
Researchers have long suspected a source‐to‐sink link between the Yangtze Block (and/or North China Block) and Eocene‐Miocene passive margin strata in Taiwan, and various models have been proposed to explain similarities in provenance and the presence of
Wei Wang, Tandis Bidgoli, Xianghua Yang, Jiaren Ye   +3 more
doaj   +1 more source

Geochronological and geochemical features of the Cathaysia block (South China): New evidence for the Neoproterozoic breakup of Rodinia

Precambrian Research, 2011
Abstract The Cathaysia block is an important element for the reconstruction of the Proterozoic tectonic evolution of South China within the Rodinia supercontinent. The Pre-Devonian Cathaysia comprises two litho-tectonic units: a low-grade metamorphic unit and a basement unit; the former was a late Neoproterozoic–Ordovician sandy and muddy sedimentary
Shu, Liangshu S., Faure, Michel, Yu, Jinhai, Jahn, Bor-Ming   +3 more
openaire   +2 more sources

The Paleosalinity Context for the Ecological Pattern of the Chengjiang Biota

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The Chengjiang biota provides critical insights into metazoan diversification during the Cambrian Explosion, preserved at multiple localities with varying fossil abundances across the Chengjiang Bay. This work reports new B/Ga and B/K data from three drill cores near fossil localities, to evaluate salinity influences on ecological distribution
Chao Chang, Kuizi Li, Qingshan Wang, Liang Duan, Kangjun Huang, Xingliang Zhang   +5 more
wiley   +1 more source

Paleozoic Tectonic Setting and Paleogeographic Evolution of the Qin‐Fang Region, Southern South China Block: Detrital Zircon U‐Pb Geochronological and Hf Isotopic Constraints

Geochemistry, Geophysics, Geosystems, 2018
The thick Silurian siliciclastic sedimentary rocks in the Qin‐Fang region contrasting with their absence in surrounding regions have long been an enigma for the early Paleozoic geology of South China. Here we employ detrital zircon U‐Pb geochronology and
Xinchang Zhang, Yuejun Wang, Peter D. Clift, Yi Yan, Yuzhi Zhang, Le Zhang   +5 more
doaj   +1 more source

Upper Mantle Shear Wave Velocity Structure of Southeastern China: Seismic Evidence for Magma Activities in the Late Mesozoic to the Cenozoic

Geochemistry, Geophysics, Geosystems, 2020
The Fujian‐Taiwan Strait‐Taiwan region, as the active eastern margin of Eurasia since the Mesozoic, has experienced the subduction and retreat of the Paleo‐Pacific plate from the Middle Mesozoic, the breakup of the continental margin in the early ...
Yayun Zhang, Huajian Yao, Min Xu, Bin Liu   +3 more
doaj   +1 more source

Late Cretaceous to Eocene Sedimentary Source Change and Tectonic Evolution of Nanao Event in Taiwan: Implications From Detrital Zircon U‐Pb Geochronology

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The tectonic evolution of the Taiwan orogenic belt from the Mesozoic to the Cenozoic remains unclear because of a lack of deterministic geochronological data for unraveling stratal sequences. The precise timing of the Nanao event is crucial for uncovering this evolution and is the focus of this study.
Chiu‐Lien Chang, Yue‐Gau Chen, Wei‐Hao Hsu, Wen‐Shan Chen   +3 more
wiley   +1 more source

Seismic Structure and the Variation of Magmatic Budget in the Southwest Sub‐Basin of the South China Sea

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract The oceanic lithospheric structure is key to understanding the processes related to the interplay between tectonics and magmatism from the end of rifting to the onset and cessation of seafloor spreading. In the oceanic basin of the South China Sea (SCS), the Southwest Sub‐basin (SWSB) is the last‐opening segment before the abandonment of ...
Jiazheng Zhang, Yuhan Li, Yongjian Yao, Minghui Zhao, Ingo Grevemeyer, Valenti Sallares, Rongwei Zhu, Lijie Wang, César R. Ranero   +8 more
wiley   +1 more source