Spatial and Temporal Distribution and Characteristics of Tuff Intervals from Yanchang Formation in the Southeastern Margin of Ordos Basin

Kaiwen TIAN; Zhiqiang FENG; Yongjiang LIU; Jianru SHI; Yong LEI; Shichao XU; Quan WANG; Rongzhu WEI

doi:10.16355/j.cnki.issn1007-9432tyut.2023.02.012

Taiyuan Ligong Daxue xuebao (Mar 2023)

Spatial and Temporal Distribution and Characteristics of Tuff Intervals from Yanchang Formation in the Southeastern Margin of Ordos Basin

Kaiwen TIAN,
Zhiqiang FENG,
Yongjiang LIU,
Jianru SHI,
Yong LEI,
Shichao XU,
Quan WANG,
Rongzhu WEI

Affiliations

Kaiwen TIAN: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Zhiqiang FENG: Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Yongjiang LIU: Key Laboratory of Submarine Geosciences and Prospecting Technology. MOE. China, Ocean University of China, Qingdao 266100, China
Jianru SHI: Paleontology Research Office, Shanxi Geological Museum, Taiyuan 030021, China
Yong LEI: College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China
Shichao XU: Paleontology Research Office, Shanxi Geological Museum, Taiyuan 030021, China
Quan WANG: Shanxi Institute of Geological Survey Co., LTD, Taiyuan 030006, China
Rongzhu WEI: Shanxi Institute of Geological Survey Co., LTD, Taiyuan 030006, China

DOI: https://doi.org/10.16355/j.cnki.issn1007-9432tyut.2023.02.012
Journal volume & issue: Vol. 54, no. 2
pp. 321 – 331

Abstract

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This study focuses on the tuff intervals involving zircon U-Pb geochronology, which are located at the bottom of Yanchang Formation in Yonghe outcrop section, Shanxi Province. In conjunction with the field exploration and microscopic observation, they show obvious regional differences. They mainly occur in the Yonghe and Daning counties, the southeast margin of Ordos Basin, and in the Ningwu Basin, and show a trend of thinning from west to east. The weighted average ages of the dominant component in the two Yonghe tuff samples are (241±3) Ma (n=29) and (238±3) Ma (n=29), respectively. Combined with the different well data in Shaanxi Province (227~241 Ma), these results indicate that the eruption of tuff is dated at the late Early Triassic to early Middle Triassic.

Published in Taiyuan Ligong Daxue xuebao

ISSN: 1007-9432 (Print)
Publisher: Editorial Office of Journal of Taiyuan University of Technology
Country of publisher: China
LCC subjects: Technology: Chemical technology: Chemical engineering; Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://tyutjournal.tyut.edu.cn/english.html

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