Mesoproterozoic magmatism redefines the tectonics and paleogeography of the SW Yangtze Block, China

2022 ◽  
Vol 370 ◽  
pp. 106558
Author(s):  
Gui-Mei Lu ◽  
Christopher J. Spencer ◽  
Xin Deng ◽  
Yang Tian ◽  
Bin Huang ◽  
...  
Keyword(s):  
Yangtze Block

DETRITAL ZIRCON CONSTRAINTS ON THE PROVENANCE AND TECTONIC SETTING OF THE LOWER DEVONIAN SANDSTONE IN SOUTHEAST YANGTZE BLOCK, CHINA

2016 ◽  
Author(s):  
Jiawei Zhang ◽  
◽  
Guohua Yuan ◽  
Guohua Yuan ◽  
Guohua Yuan ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
Lower Devonian ◽  
Tectonic Setting ◽  
Yangtze Block

scholarly journals Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments

2021 ◽  
Vol 13 (1) ◽  
pp. 166-187
Author(s):  
Hao Liu ◽  
Chan Wang ◽  
Yong Li ◽  
Jianghong Deng ◽  
Bin Deng ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Sedimentary Environment ◽  
Hydrothermal Fluids ◽  
Early Cambrian ◽  
Rock Series ◽  
Yangtze Block ◽  
Tectonic Environment ◽  
Weathering Intensity ◽  
Black Rock Series ◽  
Tectonic System

Abstract The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block. In this paper, major, trace, and rare earth element data are presented in an attempt to reveal the sediment source during the deposition of the early Cambrian Qiongzhusi Formation and to reconstruct the sedimentary tectonic environment and weathering intensity during that time. The basin primarily received continental clastic material with neutral-acidic igneous rocks from a stable source and with a moderate level of maturity during the depositional period of the Qiongzhusi Formation. Furthermore, the strata were weakly influenced by submarine hydrothermal fluids during diagenesis. The reconstruction of the sedimentary environment and weathering intensity shows that P2O5 enrichment and water body stratification occurred due to the effects of upwelling ocean currents during the depositional period of the Qiongzhusi Formation. The combination of upwelling and bottom-water hydrothermal fluids led to environmental changes in the study area, from dry and hot to moist and warm. Last, the reconstruction of the tectonic environment of the Qiongzhusi Formation indicates that deposition occurred in continental slope and marginal marine environments associated with a continental arc tectonic system. These findings provide an essential basis for the comprehensive reconstruction of the early Cambrian sedimentary environment of the Yangtze Block.

Ca. 1050 Ma intra-continental rift-related A-type felsic rocks in the southwestern Yangtze Block, South China

2018 ◽  
Vol 309 ◽  
pp. 22-44 ◽  
Author(s):  
Wei Terry Chen ◽  
Wei-Hua Sun ◽  
Mei-Fu Zhou ◽  
Wei Wang
Keyword(s):  
South China ◽  
Continental Rift ◽  
Yangtze Block ◽  
Felsic Rocks
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