Quantifying palaeohumidity in the Atacama Desert since the Miocene using total water isotopes in gypsum, halite and diatomite (D03)

使用石膏、石盐和硅藻土中的总水同位素量化中新世以来阿塔卡马沙漠的古湿度 (D03)

• 批准号: 318131902
• 金额: --
• 依托单位: Institut für Geologie und Mineralogie
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/318131902?language=en
• 关键词: Quantifying; palaeohumidity; Atacama; Desert; since

We seek to analyze all water isotopes (1H, 2H, 16O, 17O, 18O) in free water and water extracted from Gypsum, Halite, and amorphous biogenic silicate in lacustrine and pedogenic samples from the Atacama Desert. The purpose of this study is to reconstruct the climate mean state regarding temperature and humidity, along with an empiric parameter for wind speed on old material dated with U-Th or U-Pb. These climatic variables are related to the isotopic evolution of free water and mineral-bound water during evaporation, as determined by the established Craig-Gordon equations.

我们试图分析游离水和从阿塔卡马沙漠湖泊和成土样品中的石膏、石盐和无定形生物硅酸盐中提取的水的所有水同位素（1H、2H、16O、17O、18O）。本研究的目的是重建关于温度和湿度的气候平均状态，以及用 U-Th 或 U-Pb 测年的旧材料的风速经验参数。这些气候变量与蒸发过程中自由水和矿物质结合水的同位素演化有关，由已建立的克雷格-戈登方程确定。