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Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos
Li, Minghui1,2; Sun, Shurui1,3; Yan, Maodu2,4; Meng, Fanwei (孟凡巍)5; Fang, Xiaomin2,3,4; Song, Xiangsuo6; Zhu, Liping1,2
2020-12-01
Source PublicationCRETACEOUS RESEARCH
ISSN0195-6671
Volume116Pages:11
Abstract

Cretaceous was a warm climate interval in the world, however, the climate was arid or desert in some places, such as at the Khorat Plateau (KP) in Thailand and in central Laos where giant Cretaceous evaporite deposits have been found. We know little about the Cretaceous paleotemperature in this area. The homogenization temperatures of primary inclusions in halite (Th-halite inclusions) can provide direct and quantitative paleotemperature data for the brine and air. In this study, we present the T(h-halite inclusions )and the iodine contents and the I/CI molar ratios of halite extracted from Core ZK2893 in Laos. Most of the Th-halite inclusions ranged from 25 degrees C to 40 degrees C, which is consistent with the paleo-temperature based on the delta O-18 of foraminifera. The halite inclusions with T-h values of more than 40 degrees C mainly formed at 92 - 85 Ma, while those with of T-h values of less than 25 degrees C mainly formed at 80 - 72 Ma. The climate was dry and warm, but showed a cooling trend during the Late Cretaceous in the study area. Most of the iodine was present as I- in halite. The total organic carbon was too low to be detected. There was a positive correlation coefficient between the I and Br contents, suggesting that evaporation significantly influences the I content of halite formed in arid climates. The very low iodine contents of 0.07-0.57 ppm suggest that there was not a significant supply of seawater into the basin in the Late Cretaceous. (C) 2020 Elsevier Ltd. All rights reserved.

KeywordHomogenization temperature Iodine Origin Climate
DOI10.1016/j.cretres.2020.104589
Indexed BySCI
Language英语
WOS KeywordSAKHON NAKHON BASIN ; LANPING-SIMAO BASIN ; FLUID INCLUSIONS ; PALEOTEMPERATURE RECORD ; POTASH DEPOSITS ; SEA ; IODINE ; ORIGIN ; TEMPERATURE ; GEOCHEMISTRY
Funding ProjectNational Basic Research Program of China[2017YFC0602803] ; National Basic Research Program of China[2018YFB05050000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070101] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070201] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0707] ; Key Project of National Natural Science Foundation of China[41988101-01]
WOS Research AreaGeology ; Paleontology
WOS SubjectGeology ; Paleontology
WOS IDWOS:000579821800016
Funding OrganizationNational Basic Research Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Project of National Natural Science Foundation of China
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/32752
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLi, Minghui
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
5.Chinese Acad Sci, State Key Lab Paleobiol & Stratig, Nanjing Inst Geol & Paleontol, Nanjing, Peoples R China
6.Shandong Acad Geosci, Jinan 250013, Peoples R China
Recommended Citation
GB/T 7714
Li, Minghui,Sun, Shurui,Yan, Maodu,et al. Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos[J]. CRETACEOUS RESEARCH,2020,116:11.
APA Li, Minghui.,Sun, Shurui.,Yan, Maodu.,Meng, Fanwei .,Fang, Xiaomin.,...&Zhu, Liping.(2020).Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos.CRETACEOUS RESEARCH,116,11.
MLA Li, Minghui,et al."Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos".CRETACEOUS RESEARCH 116(2020):11.
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