The Late Triassic seismic soft sedimentary, deformation and its event significance in the west margin of Chuxiong Basin

CHEN Guangyan; LIU Guichun; MA Jinhua; CHEN Ke; SUN Baidong; YAN Xun; SUN Peng; HE Zhaorong

2021 Vol. 40, No. 7

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CHEN Guangyan, LIU Guichun, MA Jinhua, CHEN Ke, SUN Baidong, YAN Xun, SUN Peng, HE Zhaorong. The Late Triassic seismic soft sedimentary, deformation and its event significance in the west margin of Chuxiong Basin[J]. Geological Bulletin of China, 2021, 40(7): 1011-1023.

Citation:

CHEN Guangyan, LIU Guichun, MA Jinhua, CHEN Ke, SUN Baidong, YAN Xun, SUN Peng, HE Zhaorong. The Late Triassic seismic soft sedimentary, deformation and its event significance in the west margin of Chuxiong Basin[J]. Geological Bulletin of China, 2021, 40(7): 1011-1023.

The Late Triassic seismic soft sedimentary, deformation and its event significance in the west margin of Chuxiong Basin

1.
Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China
2.
MNR Key Laboratory of Sanjiang Metallogeny and Resources Exploration and Utilization, Kunming 650051, Yunnan, China

More Information

Corresponding author: LIU Guichun, liuguichun15@sina.com

Received Date: 13 April 2020

Revised Date: 28 June 2021

Publish Date: 15 July 2021

Abstract

Abstract

Seismites are the important recorder of ancient earthquake. Seismites were recognized from foreslope turbidity facies Luojiadasha Formation rocks, in west margin of Chuxiong Basin. Based on the observation of field outcrop and thin section of the Luojiashan Formation, the identification marks of the Late Triassic seismites in the western margin of the Chuxiong Basin were summarized. The seismicity structure of the in-situ phase is divided into brittle seismotectonic type and soft deformable seismotectonic type, including stepmicro-faults, seismo-folds, brittle, brittle ductile structure, tearing structure, self-fragmental breccia, mixed slip layer, liquefied curl deformation, pillow structure, disc structure, liquefied, liquefied veins, sand volcano, flame-shaped structure, load structure and bead structure flow seismites rocks. Based on the study of stratigraphic column, seismite sequence has been created. It is of important significance for the study of tectonic evolution and the times of faulting basin and guarding the exploration of oil-gas in the Chuxiong Basin.
- seismites /
- soft sedimentary deformation /
- macro and micro characteristics /
- Late Triassic /
- Luojiadashan Formation /
- west margin of Chuxiong Basin

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References

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