气候变化领域集成服务门户(CCPortal): Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos

CCPortal

DOI	10.1016/j.cretres.2020.104589
	Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos
	Li, Minghui; Sun, Shurui; Yan, Maodu; Meng, Fanwei; Fang, Xiaomin; Song, Xiangsuo; Zhu, Liping
通讯作者	Li, MH (通讯作者)
发表日期	2020
ISSN	0195-6671
EISSN	1095-998X
卷号	116
英文摘要	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.
关键词	SAKHON NAKHON BASIN LANPING-SIMAO BASIN FLUID INCLUSIONS PALEOTEMPERATURE RECORD POTASH DEPOSITS SEA IODINE ORIGIN TEMPERATURE GEOCHEMISTRY
英文关键词	Homogenization temperature; Iodine; Origin; Climate
语种	英语
WOS研究方向	Geology ; Paleontology
WOS类目	Geology ; Paleontology
WOS记录号	WOS:000579821800016
来源期刊	CRETACEOUS RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259832
推荐引用方式 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]. 中国科学院青藏高原研究所,2020,116.
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.
MLA	Li, Minghui,et al."Late Cretaceous paleoclimate reconstruction from halite in an evaporite deposit on the Khorat Plateau, Laos".CRETACEOUS RESEARCH 116(2020).