Bimodal Aeolian-Lacustrine Sedimentary Intercalations and Provenance in Qarhan Playa, Qaidam Basin

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This research aims to understand the sedimentary features and mechanisms in the Qarhan Playa and their implications for arid region lake processes.
Analyzed sediment profiles in the Qarhan Playa region using grain size and geochemical indicators.
Utilized grain size end-member models to explore sediment composition and provenance.
Comparative analysis of sediment characteristics between two distinct zones in the profile.
Zone I (20-100 cm) primarily consists of uniform fine-grained lacustrine sediments, while Zone II (100-270 cm) features alternating aeolian sandy layers and fine lacustrine deposits.
These intercalations correlate with high-energy wind events, suggesting environmental dynamics.
Provenance analysis indicates that lacustrine components are likely sourced from upstream river runoff, while aeolian components are linked to wind activity in the western Qaidam Basin.

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Investigates sediment characteristics in Qarhan Playa, highlighting the effects of wind and water dynamics.

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Gai et al. (2026) studied this question.

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