气候变化领域集成服务门户(CCPortal): Paleoclimatic application of spectral parameters to the eolian red clay of the Jianzha Basin, northeastern margin of the Tibetan Plateau

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DOI	10.1007/s11430-023-1274-1
	Paleoclimatic application of spectral parameters to the eolian red clay of the Jianzha Basin, northeastern margin of the Tibetan Plateau
	Fu, Chaofeng; Tian, Ju'e; Xu, Xinwen; Song, Yougui; Zuo, Jun; Wang, Feng; Chen, Lin; Li, Pengfei; Qiang, Xiaoke
发表日期	2024
ISSN	1674-7313
EISSN	1869-1897
英文摘要	Reflectance spectroscopy is rapid, inexpensive, and non-destructive and can provide important information about the mineralogy of rocks and sediments. We measured the reflectance spectroscopy of Miocene red clay deposits on the northeastern margin of the Tibetan Plateau, with the aim of developing a rapid methodology for detecting paleoclimatic changes. We obtained visible/near-infrared (VNIR) and short-wave infrared (SWIR) spectroscopy data from the red clay in the Jianzha Basin, and analyzed their relationship with independent paleoclimatic records, including mineral contents and environmental magnetic parameters. The results show that the VNIR parameters, including D500, D900, R500, and R900 (where D and R represent the depth and reflectance of the absorption peaks around 500 and 900 nm, respectively) are temperature-sensitive and correlated with the magnetic susceptibility, frequency-dependent magnetic susceptibility, and the marine delta 18O record. The results of frequency-domain analysis of the VNIR parameters show that they reflect climate change on orbital timescales. SWIR parameters, such as AS1400, D1400/D1900 and D1900 (where AS represents the asymmetry of the absorption peaks around 1400 nm), are correlated with the illite and montmorillonite content, and they are sensitive to the weathering intensity. The spectral parameters of the eolian red clay in the Jianzha Basin reflect regional climatic changes caused by the uplift of the Tibetan Plateau at similar to 8.5 Ma and global climatic cooling at similar to 7.2 Ma, and thus they are applicable as both regional and global paleoenvironmental indicators.
英文关键词	Visible/near-infrared spectroscopy; Short-wave infrared spectroscopy; Paleoclimatic indicators; Red clay; Tibetan Plateau
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001196897200001
来源期刊	SCIENCE CHINA-EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289263
作者单位	Chang'an University; Chinese Academy of Sciences; Institute of Earth Environment, CAS; Northwest University Xi'an
推荐引用方式 GB/T 7714	Fu, Chaofeng,Tian, Ju'e,Xu, Xinwen,et al. Paleoclimatic application of spectral parameters to the eolian red clay of the Jianzha Basin, northeastern margin of the Tibetan Plateau[J],2024.
APA	Fu, Chaofeng.,Tian, Ju'e.,Xu, Xinwen.,Song, Yougui.,Zuo, Jun.,...&Qiang, Xiaoke.(2024).Paleoclimatic application of spectral parameters to the eolian red clay of the Jianzha Basin, northeastern margin of the Tibetan Plateau.SCIENCE CHINA-EARTH SCIENCES.
MLA	Fu, Chaofeng,et al."Paleoclimatic application of spectral parameters to the eolian red clay of the Jianzha Basin, northeastern margin of the Tibetan Plateau".SCIENCE CHINA-EARTH SCIENCES (2024).