Ancient Microorganisms and Carotenoids Preserved in Fluid Inclusions in Halite from Chaka Salt Lake,Western China:Evidence from Micro-observation and in situ Raman Spectroscopy  

作　　者：CHEN Yong WANG Jiuyuan ZHOU Zhenzhu CHEN Xiaolan ZHAO Zhenyu SHI Peng HAN Yun 

机构地区：[1]School of Geosciences,China University of Petroleum(East China),Qingdao,Shandong 266580,China [2]Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Mineral,Shandong University of Science and Technology,Qingdao,Shandong 266590,China [3]Department of Earth and Planetary Sciences,Yale University,New Haven,CT 06511,USA [4]PetroChina Exploration and Development Institute,Beijing 100083,China [5]Bohai Oil Research Institute,Tianjin Branch of CNOOC Ltd,300459,Tianjin 300459,China

出　　处：《Acta Geologica Sinica(English Edition)》2021年第3期1008-1015,共8页地质学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(41873070,U1762108 and 41172111).

摘　　要：Trapped ancient microorganisms in halite fluid inclusions are of special interest to the understanding of biology and ecology in salt lake systems.With the integration of petrologic,microthermometric,and Raman spectroscopic analyses,this study utilizes fluid inclusions from Chaka Salt Lake,eastern Qaidam Basin,NW China,to assess the possibility of microorganism-trapping by fluid inclusions.Here,we report that the solid phase of some primary fluid inclusions contains carotenoids,which is interpreted as evidence of Dunaliella algae,and that the coexisting liquid phase comprises SO_(4)^(2-).The homogenization temperatures of single-phase primary fluid inclusions indicate that the precipitation temperature of the Holocene halite in Chaka Salt Lake ranges from 13.5℃ to 36.4℃.This suggests that fluid inclusions in halite are a good medium for trapping and preserving ancient microorganisms and organic matter in salt lakes,and that Raman spectroscopy has good potential to identify halophilic archaea.

关 键 词：invertebrate paleontology halophile microorganisms HALITE fluid inclusions carotenoids Qinghai Province 

分 类 号：Q913[天文地球—古生物学与地层学] P53[生物学—古生物学]