Evidence for the Late Pliocene Aridification in the Eastern Tarim Basin,Northwest China  

作　　者：Hua Zhang Feng-Lin Lü Cheng-Lin Liu Peng-Cheng Jiao Hui-Jing Yin Hui Yan Bao-Cheng Ma Liang-Liang Zhao Hong-Chao Liu 

机构地区：[1]Ministry of Natural Resources Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China [2]National Centre for Archaeology,Beijing 100013,China [3]School of Earth Resources,China University of Geoscience,Wuhan 430074,China [4]School of Earth Sciences and Resources,China University of Geoscience,Beijing 100083,China [5]State Development and Investment Corp.,Xin Jiang Luobupo Potash Co.,LTD,Hami 839000,China

出　　处：《Journal of Earth Science》2023年第5期1632-1634,共3页地球科学学刊（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.41972092);the Third Xinjiang Scientific Expedition Program (No.2022xjkk1303)。

摘　　要：INTRODUCTION The vast arid regions in mid-latitude Asia(MLA)are among the most prominent landscapes on Earth’s surface and have been thought to provide a key source of global atmospheric dust(Hovan et al.,1989).Over the past decades,research on aridification of MLA have made tremendous progress and pointed large-scale aridity has prevailed in this region since the Late Pliocene despite long-term stepwise drying(Fang et al.,2020;Liu et al.,2014).However,direct sedimentary records for the late Pliocene aridification is still lack,hindering our understanding of regional comparison and the behind drive mechanism.The Tarim Basin in northwest China is one of the driest and largest inland basins and is considered as an ideal candidate for aridity records of MLA(Sun et al.,2013).Although considerable studies of environmental variations have been conducted(Liu et al.,2020;Zheng et al.,2015),a comprehensive picture of climatic change of the basin during the Late Pliocene is still unavailable,due to fragmentary sedimentary records,especially in the eastern Tarim Basin.In this contribution,we report the Late Pliocene lacustrine sediments found in Lop Nur of the east of Tarim Basin.The occurrence of abundant magnesite,their related crystal morphology and C-O isotopic signature suggested a typical brackish or even saline lake environment and arid climatic condition in eastern Tarim Basin during this interval.

关 键 词：TARIM SEDIMENTARY CLIMATIC 

分 类 号：P532[天文地球—古生物学与地层学]