PROVENANCE ANALYSIS ON THE FOURTH MEMBER OF XUJIAHE FORMATION, UPPER TRIASSIC IN THE NORTHEASTERN SICHUAN BASIN

BI Yi-wei; ZHANG Chang-min

2019 Vol. 28, No. 2

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BI Yi-wei, ZHANG Chang-min. PROVENANCE ANALYSIS ON THE FOURTH MEMBER OF XUJIAHE FORMATION, UPPER TRIASSIC IN THE NORTHEASTERN SICHUAN BASIN[J]. Geology and Resources, 2019, 28(2): 134-139, 159.

Citation:

BI Yi-wei, ZHANG Chang-min. PROVENANCE ANALYSIS ON THE FOURTH MEMBER OF XUJIAHE FORMATION, UPPER TRIASSIC IN THE NORTHEASTERN SICHUAN BASIN[J]. Geology and Resources, 2019, 28(2): 134-139, 159.

PROVENANCE ANALYSIS ON THE FOURTH MEMBER OF XUJIAHE FORMATION, UPPER TRIASSIC IN THE NORTHEASTERN SICHUAN BASIN

School of Earth Sciences, Yangtze University, Wuhan 430100, China

Received Date: 19 August 2018

Revised Date: 04 December 2018

Publish Date: 30 April 2019

Abstract

Abstract

The 4th Member of Xujiahe Formation, Upper Triassic, in the northeastern Sichuan Basin is a key layer for oil-gas exploration. The deposition in the area is affected by multiple provenances. By analyzing the heavy minerals, clastic constituents, debris compositions and paleocurrent directions, it is finally determined that the provenances originate from three directions, namely, Longmenshan, Dabashan and Micangshan. The provenance of the western Yuanba is from Longmenshan fold belt; that of the eastern Yuanba, from the southeast of Dabashan fold belt; that of the central Yuanba, from the mixed accumulation of Longmenshan and Dabashan; that of the western Tongnanba area, from the Micangshan fold belt; while that of the eastern Tongnanba area, from the mixed accumulation of Dabashan and Micangshan.
- northeast of Sichuan Basin /
- 4th Member of Xujiahe Formation /
- provenance direction

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References

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