PROVENANCE OF PALEOGENE SEDIMENTS IN HOH XIL BASIN, NORTH OF QINGZANG PLATEAU, AND ITS SIGNIFICANCE FOR PLATEAU UPLIFT
Abstract：The Hoh Xil basin, the largest Tertiary sedimentary basin in thehinterland of the Qingzang plateau between the Kunlun Mountain and the Tanggula Mountain, may be significant for the research into the early uplift and the crustal shortening of the plateau. The 5452.8m-thick Eocene-Early Oligocene Fenghuoshan and Yaxicuo groups preserved in the basin consist mainly of clastic rocks and mudstone. The analysis of the clastic-rock provenance shows that the Fenghuoshan Group originated mainly from the Permian-Triassic strata in the Tanggula orogenic zone in the south, and that the Yaxicuo Group originated mainly from the Carboniferous-Permian strata in the Tanggula, Bairizhajia, and Heishishan-Gaoshan orogenic zones in the south. These sedimentary evolutionary process results from the persistent strengthening of the Paleogene tectonic uplift of the orogenic zone in the southern Hoh Xil basin, indicating that the north of the Qingzang plateau had already been uplifted to a certain height in the sedimentary period of the Yaxicuo Group.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-5 )