Characteristics of Paleogene Heavy Mineral andIts Source in Northern Margin of Qaidam Basin

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  • Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China

Received date: 2013-04-25

  Revised date: 2013-12-16

  Online published: 2014-04-10

Abstract

Depended on mathematical statistics of Q type cluster,correlation analysis and ZTR indexes,we discuss the stability and non-stability of heavy minerals and their relevant assemblages in the Paleogene clastic rocks in the northern margin of Qaidam Basin,and ensure the direction of the parent sources.The content of stable minerals is more than that of non-stable one in the Paleogene heavy minerals,suggesting that the mineral had accepted a long-distance transport from the parent source.The similar characteristics of heavy mineral types,relevant assemblages and ZTR indexes occurs in interval setting of Paleogene,indicating that the inheritance sedimentation had happened in the evolutional process.Three input directions of parent sources are gotten as follows:northwestern direction from Altyn,Xiao Saishitengshan and Saishitengshan direction,and east direction from Qilian Mountain and Lüliangshan.Each source can divide into some smaller one and each of small sources is relatively independent.The fourth and fifth tectonic belts of Lenghu were commonly affected by both sources of Altyn and Xiao Saishitengshan.

Cite this article

LIN Hong,LI Feng-jie,LI Lei,YANG Yu-chuan,LI Jun-wu . Characteristics of Paleogene Heavy Mineral andIts Source in Northern Margin of Qaidam Basin[J]. Natural Gas Geoscience, 2014 , 25(4) : 532 -541 . DOI: 10.11764/j.issn.1672-1926.2014.04.532

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