CCSD主孔3 000m岩心构造产状特征及其地质意义

唐哲民; 陈方远

Volume 31 Issue 4

Jul. 2006

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Article Navigation > Earth Science > 2006 > 31(4): 527-532

TANG Zhe-min, CHEN Fang-yuan, 2006. Attitude Characteristics of Structure and Geological Meaning in 3 000m Core of the CCSD Main Hole. Earth Science, 31(4): 527-532.

Citation:

TANG Zhe-min, CHEN Fang-yuan, 2006. Attitude Characteristics of Structure and Geological Meaning in 3 000m Core of the CCSD Main Hole. Earth Science, 31(4): 527-532.

TANG Zhe-min, CHEN Fang-yuan, 2006. Attitude Characteristics of Structure and Geological Meaning in 3 000m Core of the CCSD Main Hole. Earth Science, 31(4): 527-532.

Citation:

TANG Zhe-min, CHEN Fang-yuan, 2006. Attitude Characteristics of Structure and Geological Meaning in 3 000m Core of the CCSD Main Hole. Earth Science, 31(4): 527-532.

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Attitude Characteristics of Structure and Geological Meaning in 3 000m Core of the CCSD Main Hole

Key Laboratory for Continental Dynamics of MLR, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 2006-05-11
Publish Date: 2006-07-25

Abstract

Abstract

This article analyzes attitude characteristics of foliation, miniature faults with striation and striation of miniature faults, and kinematic characters of brittle and ductile shear zone. The results indicate that: (1) The dip angles of eclogite-type foliations are obviously steeper than the angles of gneiss-type foliations, because the strength of the former is higher than the latter, so deformation of both is different in compressional process; the main part of ductile deformation is shearing along foliation; attitude of the main part of miniature faults with striation is identical with foliation, part of it is accompanied by other miniature faults which are conjugate with the former. (2) The main part of brittle and ductile deformation shears in an ESE-WNW direction, with a small part shearing in a near S-N direction. The movement direction of faults in brittle and ductile deformation is the same, but in structures conserved now, the main part of the ductile deformation is dominated by the ESE-WNW thrust shear sense, part of it is ductile shearing of SN direction; the main part of brittle deformations is dominated by the WNW-ESE normal shear sense. (3) The tectonic stress field of main hole is divided initially into four periods, the main structure reserved now was coming from compressional tectonic stress field in an ESE-WNW direction.
- Chinese Continental Scientific Drilling (CCSD) main hole,
- foliation,
- ductile shear zone,
- striation of fault,
- tectonic stress field

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References(21)

References

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