Provenance Characteristics of Huagang Formation ( Paleogene) in Xihu Sag, East China Sea

HAO  Le-Wei, LIU  Chang, WANG  Qi, WANG  Huan, MA  Xiao-Feng, TANG  Dun, LIAO  Peng-

doi:10.11764/j.issn.1672-1926.2011.02.315

Natural Gas Geoscience >

2011 , Vol. 22 >Issue 2: 315 - 323

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.02.315

article

Provenance Characteristics of Huagang Formation ( Paleogene) in Xihu Sag, East China Sea

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1.Key Laboratory of Petroleum Resources Research,Chinese Academy of Sciences,Lanzhou 730000,China;
2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;3.College of Biological Sciences
and Biotechnology of Beijing Forestry University,Beijing 100083,China;4.School of Mathematics, Physics
and Biological Engineering of Inner Mongolia University of Science and Technology,Baotou 014010,China

Received date: 2010-04-29

Revised date: 2010-09-20

Online published: 2011-04-10

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Abstract

The Huagang Formation in Xihu sag is an important reservoir, of which the provenance has been the focus of debate at all times.The source branches are finely pictured according to the characteristics of debris composition and heavy mineral analysis combined with sand percent distribution map.The results show that the Huagang Formation provenance mainly originated from the western edge of Xihu sag and a little from the eastern Diaoyu islands fold belt.The provenance is specific divided into three branches: the western Haijiao uplift source, north-west Hupijiao uplift and east of the Diaoyu islands fold belt source which compensatively affect north area, and south\|west Yushan uplift source affecting the central and southern area.The natures of the rocks around depression are speculated by analyzing debris type, feldspar features, microscopic characteristics of quartz grains and heavy minerals, rare earth elements and so on.The rocks around the Xihu sag are mainly magmatic rocks, secondly metamorphic rocks, and rarely sedimentary rocks.Metamorphic rocks are developed in the middle of Haijiao uplift affecting western Pinghu area.Only a few Sedimentary rocks exit in the northern part of the Diaoyu islands fold belt.

Key words： Provenance analysis; REE distribution pattern; Heavy mineral assemblage; Huagang Formation; Xihu sag

Cite this article

HAO Le-Wei, LIU Chang, WANG Qi, WANG Huan, MA Xiao-Feng, TANG Dun, LIAO Peng- . Provenance Characteristics of Huagang Formation ( Paleogene) in Xihu Sag, East China Sea[J]. Natural Gas Geoscience, 2011 , 22(2) : 315 -323 . DOI: 10.11764/j.issn.1672-1926.2011.02.315

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