The possible changes of tectonic stress fields in North China in 16–17th centuries

1992 ◽  
Vol 5 (4) ◽  
pp. 691-697
Author(s):  
Genmo Zhao
Keyword(s):  
North China ◽  
Tectonic Stress ◽  
Stress Fields

scholarly journals Multisource stress data constraints on Cretaceous—present regional tectonic stress field evolution in the southern Jinzhou area, North China Craton

2021 ◽  
Vol 18 (6) ◽  
pp. 1007-1021
Author(s):  
Chengwei Yang ◽  
Chenghu Wang ◽  
Mingruo Jiao ◽  
Yujiang Li ◽  
Pu Wang
Keyword(s):  
Stress Field ◽  
Hydraulic Fracturing ◽  
Focal Mechanism ◽  
North China Craton ◽  
North China ◽  
Tectonic Stress ◽  
Strike Slip ◽  
Stress Fields ◽  
Focal Mechanism Solutions ◽  
Regional Tectonic

Abstract Regional tectonic stress fields are key crustal stress elements that drive tectonic movements and are associated with regional tectonics and geological resources. Regional tectonic stress field evolution of the Jinzhou area, located in the eastern block of the North China Craton (NCC), may provide a deeper understanding of tectonics of western Liaoning and the NCC. This work conducted borehole television, hydraulic fracturing and focal mechanism solutions to invert the paleo and present regional tectonic stress fields. Four groups of tensile fracture in the southern Jinzhou area were identified via borehole television, and their azimuths were NNW–SSE, NWW–SEE, nearly W–E and NE–SW in temporal order representing four stages of extensional tectonic events. Hydraulic fracturing and focal mechanism solutions showed that the stress status was normal fault and strike-slip, revealing that the southern Jinzhou area is undergoing NEE–SWW-oriented compression and nearly N–S-oriented extension in accordance with the strike-slip mechanism. From the Early Cretaceous to the present, the direction of the regional extensional stress in the southern Jinzhou area has evolved counterclockwise and sequentially from NNW–SSE to NWW–SEE, W–E, NE–SW and nearly N–S, and the regional tectonic mechanism has transited from extension to extension-strike-slip to strike-slip, leading to the current tectonic framework.

scholarly journals Applications of Vitrinite Anisotropy in the Tectonics: A Case Study of Huaibei Coalfield, Southern North China

2012 ◽  
Vol 2012 ◽  
pp. 1-16
Author(s):  
Yudong Wu ◽  
Quanlin Hou ◽  
Yiwen Ju ◽  
Daiyong Cao ◽  
Junjia Fan ◽  
...  
Keyword(s):  
North China ◽  
Vitrinite Reflectance ◽  
Eastern China ◽  
Tectonic Stress ◽  
Deformation Mechanisms ◽  
Thermal Metamorphism ◽  
Regional Tectonic ◽  
Projection Analysis ◽  
Huaibei Coalfield

29 oriented and 10 nonoriented coal samples are collected in the study from three different regions of the Huaibei coalfield, eastern China, and their vitrinite reflectance indicating surface (RIS) parameters are systematically calculated and analyzed. Using the available methods, Kilby’s transformations and RIS triaxial orientations are obtained. The magnitudes and orientations of the RIS axes of the three regions were respectively projected on the horizontal planes and vertical sections. The results show that the samples in high deformed region have significant anisotropy magnitudes (higher Bw/Rmax and Ram values) with a biaxial negative style, whereas the samples in the slightly deformed area have unimpressive anisotropy magnitudes with a biaxial negative style. Thermal metamorphism superposed might enhance the complication and variation of RIS style. RIS projection analysis deduced that the RIS orientation is mainly controlled by regional tectonic stress, and likely influenced by deformation mechanisms of coal.

Tectonic Stress Fields and Karst

2014 ◽  
pp. 7-71
Author(s):  
Stefan Shanov ◽  
Konstantin Kostov
Keyword(s):  
Tectonic Stress ◽  
Stress Fields

Evolution of 3D tectonic stress field and fault movement in North China

2001 ◽  
Vol 14 (4) ◽  
pp. 371-383 ◽  
Author(s):  
Lian-wang Chen ◽  
Yuan-zhong Lu ◽  
Ruo-mei Guo ◽  
Gui-lin Xu ◽  
Jie Zhang
Keyword(s):  
Stress Field ◽  
North China ◽  
Tectonic Stress ◽  
Tectonic Stress Field ◽  
Fault Movement
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