STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION

LIU Jiaren

doi:10.12090/j.issn.1006-6616.2019.25.03.031

Volume 25 Issue 3

Jun. 2019

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LIU Jiaren, 2019. STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION. Journal of Geomechanics, 25 (3): 341-348. DOI: 10.12090/j.issn.1006-6616.2019.25.03.031

Citation:

LIU Jiaren, 2019. STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION. Journal of Geomechanics, 25 (3): 341-348. DOI: 10.12090/j.issn.1006-6616.2019.25.03.031

Citation:

LIU Jiaren, 2019. STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION. Journal of Geomechanics, 25 (3): 341-348. DOI: 10.12090/j.issn.1006-6616.2019.25.03.031

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STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION

doi: 10.12090/j.issn.1006-6616.2019.25.03.031

LIU Jiaren^{1, 2
,}

1.
Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Guiyang 550004, Guizhou, China
2.
Guizhou Geological Society, Guiyang 550004, Guizhou, China

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Received: 2018-11-06
Revised: 2019-01-05
Published: 2019-06-01

Abstract

Abstract

The theory of elastic mechanics is applied to find out distribution and dynamic evolution of stress field in the forming process of fold structure. The analytical expression of stress field when a single fold starts is deduced, through which the relationship between fold wavelength and the thickness and stiffness modulus of rock formation is obtained, and the cause of fold equidistant distribution is revealed. The relationship between fold driving stress and rock layer thickness, stiffness modulus and fold wavelength is obtained, and the possibility of fold as "paleogeostress recorder" to measure paleogeostress is proposed. Based on analysis of the composite strata in different binding states, the causes of parallel fold, similar fold and incongruous fold are revealed. According to the analytical expression of the stress field when a single fold starts, an analytical expression reflecting the evolution of fold stress field is proposed and partially verified, and then the evolution of the fold stress field is analyzed.
- structure,
- fold,
- stress field,
- fold wavelength,
- fold equidistant distribution,
- paleogeostress recorder

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References(16)

References

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STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION

doi: 10.12090/j.issn.1006-6616.2019.25.03.031

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STRESS FIELD OF FOLD STRUCTURE AND ITS EVOLUTION

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