Does Eolian Flux to the Northwest Pacific Ocean Reflect Persistent Asian Interior Aridity on Orbital Timescales?

Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(2)

Published: Jan. 24, 2025

Abstract Northwest Pacific sedimentary eolian dust flux records have long been used to make direct inferences about Asian interior aridity. However, factors other than aridity can impact production rate. We present here an integrated environmental magnetic, electron microscopic, sedimentologic, and geochemical investigation of from Ocean Drilling Program Hole 1207A between 1.0 1.5 Ma. Reconstructed fluxes bulk illite, the predominant clay mineral (>72% proportion), are both higher lower during glacials interglacials, respectively. Lower illite chemical index values reflect stronger physical weathering glacials. attribute peaks increased availability wind‐erodible particles caused by enhanced in source areas due strengthened glacial activity response cooling. This evidence demonstrates that does not only persistent on orbital timescales.

Language: Английский

Palaeoenvironmental evolution of the Northeastern Tibetan Plateau and its response to global temperature change during the Late Miocene: Geochemical and clay mineralogical evidence from the Jianzha Basin

Global and Planetary Change, Journal Year: 2025, Volume and Issue: unknown, P. 104748 - 104748

Published: Feb. 1, 2025

Language: Английский

Response of sensitive grain size components in the muddy area off the southern coast of Weihai city, China, to Holocene climate and environmental changes

Quaternary International, Journal Year: 2024, Volume and Issue: 716, P. 109632 - 109632

Published: Dec. 9, 2024

Language: Английский