The Characteristics of Clay Minerals of the Eocene-Miocene Continental Strata in the Zhangshu-Guangchang Region, Jiangxi Province and its Paleoclimatic Significance

YU Yang-Yang; YE Ting-Ting; YAN Zhao-Kun; ZHANG Dai-Zhu; SHAO Chong-Jian; YAN Chen-Yu; GONG Chu-Yun

doi:10.3969/j.issn.2097-0013.2024.04.009

2024 Vol. 40, No. 4

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Article navigation > South China Geology > 2024 > 40(4): 703-711

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YU Yang-Yang, YE Ting-Ting, YAN Zhao-Kun, ZHANG Dai-Zhu, SHAO Chong-Jian, YAN Chen-Yu, GONG Chu-Yun. 2024. The Characteristics of Clay Minerals of the Eocene-Miocene Continental Strata in the Zhangshu-Guangchang Region, Jiangxi Province and its Paleoclimatic Significance. South China Geology, 40(4): 703-711. doi: 10.3969/j.issn.2097-0013.2024.04.009

Citation:

YU Yang-Yang, YE Ting-Ting, YAN Zhao-Kun, ZHANG Dai-Zhu, SHAO Chong-Jian, YAN Chen-Yu, GONG Chu-Yun. 2024. The Characteristics of Clay Minerals of the Eocene-Miocene Continental Strata in the Zhangshu-Guangchang Region, Jiangxi Province and its Paleoclimatic Significance. South China Geology, 40(4): 703-711. doi: 10.3969/j.issn.2097-0013.2024.04.009

The Characteristics of Clay Minerals of the Eocene-Miocene Continental Strata in the Zhangshu-Guangchang Region, Jiangxi Province and its Paleoclimatic Significance

1.
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China
2.
School of Earth Sciences, East China University of Technology, Nanchang 330013, Jiangxi, China

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Corresponding author: YAN Zhao-Kun, yzk517@163.com

Received Date: 24 October 2024

Revised Date: 24 November 2024

Publish Date: 20 December 2024

Abstract

Abstract

The study of climate-sensitive sediments from the Cenozoic in the South China Block indicates that the paleoclimate during this period generally experienced a transition from arid to humid conditions. However, there is a lack of detailed characterization regarding the specific evolutionary process of this climate transition. This paper focuses on the Eocene to Miocene continental strata in the Zhangshu-Guangchang area of Jiangxi Province in eastern South China, systematically conducting whole-rock mineral content and clay mineral X-ray diffraction (XRD) analyses. The results show that the clay minerals are primarily composed of illite and illite-smectite mixed layers, with relative contents of illite ranging from 7% to 63%, kaolinite from 0% to 93%, chlorite from 0% to 17%, and illite-smectite mixed layers from 0% to 63.2%. According to the combinations and relative abundance changes of clay minerals, along with previous research findings, it is suggested that the paleoclimate in this region change from relatively arid to semi-arid and semi-humid conditions during the Eocene to Miocene in the early Miocene. This understanding provides important references for the study of paleoclimate evolution in the South China Block.
- the South China Block /
- clay minerals /
- paleoclimate reconstruction /
- paleoclimate significance /
- Eocene-Miocene

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References

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