浙江煤山牙形石微区原位REE组成及古环境意义

陈剑波; 赵来时; 陈中强; 童金南; 周炼; 胡兆初; 陈泳霖

doi:10.3799/dqkx.2012.003

Volume 37 Issue 1

Jan. 2012

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Article Navigation > Earth Science > 2012 > 37(1): 25-34

CHEN Jian-bo, ZHAO Lai-shi, CHEN Zhong-qiang, TONG Jin-nan, ZHOU Lian, HU Zhao-chu, CHEN Yong-lin, 2012. In Situ Rare Earth Elements in Conodont from Meishan Section in Zhejiang Province and Implications for Paleoenvironmental Evolution. Earth Science, 37(1): 25-34. doi: 10.3799/dqkx.2012.003

Citation:

CHEN Jian-bo, ZHAO Lai-shi, CHEN Zhong-qiang, TONG Jin-nan, ZHOU Lian, HU Zhao-chu, CHEN Yong-lin, 2012. In Situ Rare Earth Elements in Conodont from Meishan Section in Zhejiang Province and Implications for Paleoenvironmental Evolution. Earth Science, 37(1): 25-34. doi: 10.3799/dqkx.2012.003

Citation:

CHEN Jian-bo, ZHAO Lai-shi, CHEN Zhong-qiang, TONG Jin-nan, ZHOU Lian, HU Zhao-chu, CHEN Yong-lin, 2012. In Situ Rare Earth Elements in Conodont from Meishan Section in Zhejiang Province and Implications for Paleoenvironmental Evolution. Earth Science, 37(1): 25-34. doi: 10.3799/dqkx.2012.003

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In Situ Rare Earth Elements in Conodont from Meishan Section in Zhejiang Province and Implications for Paleoenvironmental Evolution

doi: 10.3799/dqkx.2012.003

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
2.
School of Earth & Environment, University of Western Australia, Crawley WA6009, Australia
3.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China

Received Date: 2011-03-25
Publish Date: 2012-01-15

Abstract

Abstract

Trace elements and rare earth elements (REE) contents of conodonts, distinguished by very low color alteration index (CAI), were measured by laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) from Meishan D section across the Permian-Triassic boundary in Zhejiang Province. Comparative analyses of surrounding rocks geochemistry study, using solutions, a significantly different response to paleo-environmental changes was revealed. Present data indicate both the total REE contents in conodont and the Ce anomalies demonstrate a more sensitive change towards temporal environmental evolution than those in whole rocks. Therefore, conodont elements are more sensitive to ambient variation than the surrounding rocks, and it is reliable for LA-ICPMS in situ analysis of conodonts. Meanwhile, we can reconstruct the Early Triassic environment using the Ce anomaly of conodont, and it provides a new evidence for acute evolutions and long-term anoxia conditions from the Permo-Triassic crisis to the Early Triassic.
- conodont,
- trace elements,
- LA-ICPMS,
- Meishan section,
- geochemistry

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References(42)

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