New progress in the study of stratigraphic sequence and epoch of Baiyin'gaolao Formation in Demohada basin, Inner Mongolia

LIN Min

2018 Vol. 37, No. 9

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LIN Min. New progress in the study of stratigraphic sequence and epoch of Baiyin'gaolao Formation in Demohada basin, Inner Mongolia[J]. Geological Bulletin of China, 2018, 37(9): 1588-1598.

Citation:

LIN Min. New progress in the study of stratigraphic sequence and epoch of Baiyin'gaolao Formation in Demohada basin, Inner Mongolia[J]. Geological Bulletin of China, 2018, 37(9): 1588-1598.

New progress in the study of stratigraphic sequence and epoch of Baiyin'gaolao Formation in Demohada basin, Inner Mongolia

LIN Min^1,2,

1.
China University of Geosciences(Wuhan), Wuhan 430072, Hubei, China
2.
Fujian Institute of Geological Survey, Fuzhou 350013, Fujian, China

Received Date: 05 February 2018

Revised Date: 05 March 2018

Publish Date: 15 September 2018

Abstract

Abstract

The Demohada volcanic-eruption basin is one of the most important Late Mesozoic volcanic basins in southern Da Hinggan Mountains. It is considered that the Demohada volcanic-eruption basin is composed of volcanic rocks of Baiyin'gaolao Formation, which is divided into three lithologic segments and constitutes a total sedimentary and eruption cycle. The volcanic rocks have eight types with nine Ⅴ-grade volcanic apparatuses, obviously controlled by NNE-trending faults. The results of zircon U-Pb dating show that the volcanic activity of the basin occurred mostly from 128Ma to 125Ma, suggesting Early Cretaceous.
- Demohada /
- volcanism /
- Baiyin'gaolao Formation /
- Early Cretaceous /
- Inner Mongolia

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References

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