Identification of Ordovician conodont in Yongshan County of northeastern Yunnan Province and its significance of stratigraphic age constraint

LIU Jianqing; HE Li; WU Lang; HE Jiawei; HE Ping

2021 Vol. 40, No. 9

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LIU Jianqing, HE Li, WU Lang, HE Jiawei, HE Ping. Identification of Ordovician conodont in Yongshan County of northeastern Yunnan Province and its significance of stratigraphic age constraint[J]. Geological Bulletin of China, 2021, 40(9): 1410-1418.

Citation:

LIU Jianqing, HE Li, WU Lang, HE Jiawei, HE Ping. Identification of Ordovician conodont in Yongshan County of northeastern Yunnan Province and its significance of stratigraphic age constraint[J]. Geological Bulletin of China, 2021, 40(9): 1410-1418.

Identification of Ordovician conodont in Yongshan County of northeastern Yunnan Province and its significance of stratigraphic age constraint

1.
Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China
2.
207 Geological Party of Sichuan Mineral and Resources Bureau, Leshan 614000, Sichuan, China

Received Date: 28 May 2019

Revised Date: 30 November 2019

Publish Date: 15 September 2021

Abstract

Abstract

The conodonts obtained from the Ordovician strata for the first time in Yongshan County of northeastern Yunnan province fills in the blank of conodont data in this area.These data show that the Ordovician strata are lack of Tongzi Formation and Honghuayuan Formation.The Meitan Formation belongs to the Lower Ordovician, the Shizipu Formation belongs to the Middle-Lower Ordovician, and the Pagota Formation belongs to the Middle-Upper Ordovician.The conodonts are similar to the Ordovician strata in the Yangtze area, but they also have their own characteristics, which are mainly reflected in the missing zone fossils in the Pagota Formation.The lack of zone fossils in the Pagota Formation is due to insufficient sample collection or differences in sedimentary environment, which needs further study.
- northeastern Yunnan /
- Ordovician /
- conodont

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References

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