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- Title
Environmental changes recorded by major elements in Loulan Stupa Section during Early-Middle Holocene.
- Authors
Jia, Hongjuan; Qin, Xiaoguang; Liu, Jiaqi
- Abstract
Holocene palaeoweathering conditions and environmental changes of Loulan (楼兰) Stupa Section were reconstructed by major elements analysis results and optical stimulated luminescence dating results. Major element results show source rock change little, with the composition equivalent to granodiorite. The low R value and high CIA (chemical index of alteration) value indicating the section at primary weathering phases. The muddy silt and silty clay have low R value and high CIA value and total iron content. In contrast, the sandy clay silt and sandy silt have high R value and low CIA and total iron value. Deglaciation time climate was relatively humid. In comparison to previous and posterior hiatus, the Middle-Holocene climate was relatively wet but still displayed high-frequency and high-amplitude fluctuations.
- Subjects
LUMINESCENCE; GRANODIORITE; IGNEOUS rocks; ROCKS; MINERALOGY
- Publication
Journal of Earth Science, 2012, Vol 23, Issue 2, p155
- ISSN
1674-487X
- Publication type
Article
- DOI
10.1007/s12583-012-0240-y