老挝万象凹陷钾盐矿床变形改造富集模式

梁光河; 徐兴旺

doi:10.3799/dqkx.2021.075

Volume 47 Issue 1

Jan. 2022

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Liang Guanghe, Xu Xingwang, 2022. Potash Deformation and Enrichment Modes in Vientiane Sag, Laos. Earth Science, 47(1): 136-148. doi: 10.3799/dqkx.2021.075

Citation:

Liang Guanghe, Xu Xingwang, 2022. Potash Deformation and Enrichment Modes in Vientiane Sag, Laos. Earth Science, 47(1): 136-148. doi: 10.3799/dqkx.2021.075

Liang Guanghe, Xu Xingwang, 2022. Potash Deformation and Enrichment Modes in Vientiane Sag, Laos. Earth Science, 47(1): 136-148. doi: 10.3799/dqkx.2021.075

Citation:

Liang Guanghe, Xu Xingwang, 2022. Potash Deformation and Enrichment Modes in Vientiane Sag, Laos. Earth Science, 47(1): 136-148. doi: 10.3799/dqkx.2021.075

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Potash Deformation and Enrichment Modes in Vientiane Sag, Laos

doi: 10.3799/dqkx.2021.075

Liang Guanghe^{1, 2, 3
,
,},
Xu Xingwang^{1, 2, 3}

1.
Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2.
Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2020-12-16
Publish Date: 2022-01-20

Abstract

Abstract

The Khorat Basin is an important potash basin in the Tethys metallogenic belt, but the exploration and development of potash deposits in this area are severely restricted due to the unclear deformation structure and the distribution rules of potash salts. Based on the analysis of macro-regional tectonic evolution, taking a small region in the Vientiane Sag as an example, under the strict constraints of high-precision 3D seismic exploration and drilling natural gamma logging, the underground accurate structural changes and potash ore distribution data were obtained. Combined with the deformation characteristics of salt structure and seismic exploration profile, the geological interpretation was carried out. The results indicate that the squeeze, slip, and rotation of the Indosinian block have strongly transformed the potash deposits in the Khorat Basin. Three types of potash deposit transformation models are summarized, including evaporite Jura type fold deformation model, differential load enrichment modes under stress, enrichment mode rotating around hard salt mound.
- Laos,
- Vientiane Sag,
- potash deposit,
- tectonic movement,
- deformation mode,
- mineral deposit

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References(61)

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Potash Deformation and Enrichment Modes in Vientiane Sag, Laos

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