A sedimentary lipid biomarker record of Holocene temperature variations and drought events in northern China

Zheng, Yanhong; Kang, Shugang; Li, Jiahao; Yu, Shi-Yong; Lan, Minwen; Wang, Junyu

doi:10.1016/j.palaeo.2024.112468

Palaeogeography, Palaeoclimatology, Palaeoecology

2024

DOI: 10.1016/j.palaeo.2024.112468

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A sedimentary lipid biomarker record of Holocene temperature variations and drought events in northern China

Yanhong Zheng,

Shugang Kang,

Jiahao Li

et al.

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Characterization of the Major Elements and Paleoenvironmental Significance of the Shiyang Profile in the Weinan Basin, China

Cao,

Dong,

et al. 2024

Atmosphere

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The enrichment and migration patterns of different chemical elements record paleoclimatic information in loess formations. The chemical elemental measurements of 245 samples from the Shiyang profile in the Weinan Region were compared with the geochemical characteristics of typical wind-formed profiles, and the paleoclimatic evolution was discussed. The results showed the following: (1) the standardized curves of the cumulative concentrations of SiO2, Al2O3, and CaO along with the Upper Continental Crust (UCC) in the Shiyang profile exhibited significant similarities with typical wind-formed profiles. This strongly suggests that the Shiyang profile has a wind-formed origin. (2) The mean value of the chemical index of alteration (CIA) of the Shiyang profile is 62.06, indicating that the Shiyang profile has been in the stage of primary chemical weathering. (3) The ratios of K2O/Al2O3, TiO2/Al2O3, and Fe2O3/Al2O3 in the Shiyang profile are comparable to those found in typical wind-formed profiles, suggesting a common source area and supporting the premise that the Shiyang profile is of wind-induced origin.(4) The regional climate has undergone a series of transitions: from a dry and cool phase in the early Holocene to warm and humid yet unstable conditions in the middle Holocene, and returning to dry and cool during the late Holocene.

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Characterization of the Major Elements and Paleoenvironmental Significance of the Shiyang Profile in the Weinan Basin, China

Cao,

Dong,

et al. 2024

Atmosphere

View full text Add to dashboard Cite

show abstract

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A sedimentary lipid biomarker record of Holocene temperature variations and drought events in northern China

Cited by 1 publication

References 43 publications

Characterization of the Major Elements and Paleoenvironmental Significance of the Shiyang Profile in the Weinan Basin, China

Characterization of the Major Elements and Paleoenvironmental Significance of the Shiyang Profile in the Weinan Basin, China

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