Palaeoenvironmental implication of the Plio-Pleistocene loess deposits in southern Tarim Basin  

作　　者：ZHENG Hongbo, CHEN Huizhong & CAO JunjiLaboratory of Marine Geology, Tongji University, Shanghai 200092, China Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710054, China Institute of Environment and Engineering of Cold and Arid Regio 

出　　处：《Chinese Science Bulletin》2002年第8期700-704,共5页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 40025107); the National Key Basic Research Special Foundation (Grant Nos. G1999043401 and G2000078501);the Changjiang Program of the Ministry of Education of China.

摘　　要：The sedimentary characteristics, grain-size distribution, geochemical composition and surface characteristics of quartz grains, together with palaeoenvironmental reconnaissance, all point to an aeolian origin for the intercalated siltstone beds in the Plio-Pleistocene Artux and Xiyu Formations along the southern margins of the Tarim Basin, indicating that loess deposition in the region started, at least, in the Early Pliocene. Loess deposition in the southern Tarim Basin was a response to the global deterioration, which might be attributed to the uplift of the Tibetan Plateau.The sedimentary characteristics, grain-size distribution, geochemical composition and surface characteristics of quartz grains, together with palaeoenvironmental reconnaissance, all point to an aeolian origin for the intercalated siltstone beds in the Plio-Pleistocene Artux and Xiyu Formations along the southern margins of the Tarim Basin, indicating that loess deposition in the region started, at least, in the Early Pliocene. Loess deposition in the southern Tarim Basin was a response to the global deterioration, which might be attributed to the uplift of the Tibetan Plateau.

关 键 词：EOLIAN LOESS PLIO-PLEISTOCENE TARIM Basin. 

分 类 号：P531[天文地球—古生物学与地层学]