Diagenetic conditions and geodynamic setting of the middle Permian hydrothermal dolomites from southwest Sichuan Basin, SW China: insights from in situ U-Pb carbonate geochronology and isotope geochemistry

2021 ◽  
pp. 105080
Author(s):  
Liyin Pan ◽  
Anping Hu ◽  
Feng Liang ◽  
Lei Jiang ◽  
Yi Hao ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Isotope Geochemistry ◽  
Middle Permian ◽  
Geodynamic Setting ◽  
Sw China

Paleo-Heat Flow Anomaly at the End of Middle Permian in NE Sichuan Basin, SW China: Did an Ocean Trough Exist?

2013 ◽  
Vol 734-737 ◽  
pp. 139-146
Author(s):  
Chuan Qing Zhu ◽  
Song Rao ◽  
Sheng Biao Hu
Keyword(s):  
Heat Flow ◽  
Sichuan Basin ◽  
Vitrinite Reflectance ◽  
Middle Permian ◽  
Early Triassic ◽  
Late Permian ◽  
Sw China ◽  
Northeastern Sichuan ◽  
Igneous Activity ◽  
Northeastern Sichuan Basin

It is an issue whether the Kaijiang-Liangping area (in the northeastern Sichuan Basin, SW China) was a controversial ocean trough during Changxing age in the late Permian-early Triassic. Some vitrinite reflectance (Ro) profiles from wells in the northeastern Sichuan Basin show obvious breaks, and the breaks are coincident with the boundary between the middle Permian and late Permian. Based on the Ro data, the heat flow history in the northeastern Sichuan Basin was reconstructed. The result shows that the heat flow reached its peak value at the end of middle Permian (~260Ma). The spatiotemporal feature of the heat flow evolution is not in agreement with the fact that there was a Kaijiang-Liangping Trough existing in the late-Permian to early Triassic. The palaeo-heat flow anomaly was, in fact, a response to the igneous activity in late middle Permian.

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