干旱区生态环境知识资源中心(Arid): HIRM variation in the Ganzi loess of the eastern Tibetan Plateau since the last interglacial period and its paleotemperature implications for the source region

Arid

DOI	10.1016/j.gr.2021.08.008
	HIRM variation in the Ganzi loess of the eastern Tibetan Plateau since the last interglacial period and its paleotemperature implications for the source region
	Chen, Zixuan; Yang, Shengli; Luo, Yuanlong; Chen, Hui; Liu, Li; Liu, Xiaojing; Wang, Shuyuan; Yang, Junhuai; Tian, Weidong; Xia, Dunsheng
通讯作者	Yang, SL (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China.
来源期刊	GONDWANA RESEARCH
ISSN	1342-937X
EISSN	1878-0571
出版年	2022
卷号	101 页码:233-242
英文摘要	Reconstruction of paleotemperatures in loess sequences plays a crucial role in paleoclimate research. Depositional-origin hematite is considered a major contributor to high-field isothermal remanence (HIRM), which is closely related to temperature. However, there is limited knowledge regarding hematite of various origins that contributes to the HIRM in Tibetan Plateau (TP) loess deposits. Here, the variation in and contributions of hematites of various origins to HIRM in the Ganzi loess of the eastern Tibetan Plateau (ETP) and their paleoclimatic significance are investigated in detail. We find that depositional hematite is the main contributor to HIRM in the ETP loess and HIRM can be used as an indicator of temperature variation on the TP. During the interglacial period, the TP dust source became more arid, which was conducive to production of more hematite. During the glacial period, the TP dust source region became colder and drier, which was not conducive to the formation of hematite. The HIRM record shows that the TP temperature has varied with orbital-scale glacial-interglacial changes since the last interglacial period. This was mainly in response to Northern Hemisphere summer insolation. The loess source region in the interior of the TP was warmest during the last interglacial period (MIS 5) and the Holocene. Its coldest period occurred during MIS 2. The climate was relatively mild during MIS 3. This study provides further understanding of environmental changes in the TP. (c) 2021 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
英文关键词	Ganzi loess HIRM Hematite Dust source area Chuanxi Plateau Paleotemperature
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000702914600003
WOS关键词	DIFFUSE-REFLECTANCE SPECTROSCOPY ; CHINESE LOESS ; MAGNETIC-SUSCEPTIBILITY ; PALEOSOL SEQUENCES ; ACQUISITION CURVES ; PEDOGENIC HEMATITE ; CLIMATE-CHANGE ; QUANTIFICATION ; RECONSTRUCTION ; TEMPERATURE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363483
作者单位	[Chen, Zixuan; Yang, Shengli; Luo, Yuanlong; Chen, Hui; Liu, Li; Liu, Xiaojing; Wang, Shuyuan; Yang, Junhuai; Tian, Weidong; Xia, Dunsheng] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zixuan,Yang, Shengli,Luo, Yuanlong,et al. HIRM variation in the Ganzi loess of the eastern Tibetan Plateau since the last interglacial period and its paleotemperature implications for the source region[J]. 兰州大学,2022,101:233-242.
APA	Chen, Zixuan.,Yang, Shengli.,Luo, Yuanlong.,Chen, Hui.,Liu, Li.,...&Xia, Dunsheng.(2022).HIRM variation in the Ganzi loess of the eastern Tibetan Plateau since the last interglacial period and its paleotemperature implications for the source region.GONDWANA RESEARCH,101,233-242.
MLA	Chen, Zixuan,et al."HIRM variation in the Ganzi loess of the eastern Tibetan Plateau since the last interglacial period and its paleotemperature implications for the source region".GONDWANA RESEARCH 101(2022):233-242.