Results 61 to 70 of about 206 (165)

CSRM‐1.0: A China Seismological Reference Model

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 9, September 2024.
Abstract High‐resolution seismic model is crucial for advancing our understandings on geological processes and enhancing seismic hazard mitigation programs. We construct a high‐resolution China Seismological Reference Model (CSRM‐1.0) in the top 100 km of the crust and uppermost mantle in continental China following a top‐down construction process. The
Xiao Xiao   +13 more
wiley   +1 more source

Seismic Reflection Profiling Reveals New Accretionary Structure in the Solonker Zone of the Central Asian Orogenic Belt

open access: yesGeophysical Research Letters, Volume 51, Issue 16, 28 August 2024.
Abstract The Central Asian Orogenic Belt (CAOB) was formed by the aggregation and collage of numerous Paleozoic subduction‐accretion assemblages and Precambrian microcontinental blocks. However, the tectonic nature of the southeastern CAOB remains controversial, which complicates the reconstruction of the Paleo‐Asian Ocean.
Xiao‐Miao Tan   +7 more
wiley   +1 more source

Evidence for Highly Complex Redox Conditions and Strong Water‐Column Stratification in an Early Cambrian Continental‐Margin Sea

open access: yesGeochemistry, Geophysics, Geosystems, 2018
Although oxic surface, ferruginous deep, and euxinic intermediate waters have been documented, the redox heterogeneity of early Cambrian oceans remains largely unclear, precluding our understanding of the relationship between marine redox evolution and ...
Zihu Zhang   +6 more
doaj   +1 more source

Provenance and Geological Significance of Cenozoic Sandstones in the Nankang Basin, Southern Cathaysia Block, China

open access: yesMinerals
The Cenozoic Nankang Basin in China records a complex series of tectonic, magmatic, metamorphic, and sedimentary events associated with the surrounding Shiwanshan, Liuwanshan, and Yunkaishan orogenic systems. The Nankang Basin is a critical location for studying the Cenozoic tectono–sedimentary evolution and strategic mineral resources of the southern ...
Bing Zhao   +7 more
openaire   +1 more source

Detrital Zircon U-Pb Geochronology of the Dazhuyuan Formation in Northern Guizhou: Implications for Bauxite Mineralization

open access: yesYankuang ceshi, 2013
The Late Carboniferous Dazhuyuan Formation, an important bauxite bearing bed, lies along the Northern Guizhou-Southern Chongqing formation. For tracing the material source of the bauxite, U-Pb dates on detrital zircon of aluminous from Dazhuyuan bauxite ...
ZHAO Zhi   +3 more
doaj  

Petrogenesis of andesites in a Triassic volcanic arc in the southern South China Sea: constraints from whole-rock and mineral geochemistry

open access: yesFrontiers in Earth Science
Calc-alkaline andesitic rocks are prominently exposed as a major product of subduction-related magmatism. The identification of Late Triassic andesites in Meiji Atoll, located in the southern South China Sea (SCS), provides new insights into the regional
Wu Wei   +6 more
doaj   +1 more source

Timing constraints on the convergent of Paleo-South China Ocean and the assembly of the Yangtze Block and Cathaysia Block

open access: yes, 2018
The South China Block is built up by the assemblage of the Yangtze and Cathaysia blocks along the Jiangnan Orogenic Belt. The timing of the Jiangnan orogeny remains controversial. In order to solve this problem, we have taken the widespread orogeny-related Neoproterozoic angular unconformity as study target because it separates the underlying well ...
Yan, Chaolei   +3 more
openaire   +1 more source

A Displaced Lower Mantle Source of the Hainan Plume in South China Revealed by Receiver Function Imaging of the CEArray

open access: yesGeochemistry, Geophysics, Geosystems
We analyzed 49,592 teleseismic receiver functions (RFs) recorded by 278 CEArray stations to image the mantle transition zone (MTZ) beneath the South China Block to understand the origins of deep velocity anomalies and their potential links to subduction ...
Yan Zhang   +3 more
doaj   +1 more source

Strain Characteristics of Motianling Ductile Shear Zone in Northern Guangxi and its Tectonic Significances

open access: yesKuangchan zonghe liyong
This is an article in the field of structural geology. In this article, the strain characteristics and tectonic significance of the tile shear zone of Motianling are discussed through macro-microstructure, finite strain measurement of rocks and EBSD ...
Zhili REN   +7 more
doaj   +1 more source

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