摘要
Objective Quaternary saline lakes are significant for paleoclimatic reconstruction due to the high sensitivity of salt minerals to environmental changes. However, salts in these areas with great thickness such as halite or potash representing extreme environments have severely blocked the application of traditional chronological methods. This is typified by Lop Nut, since accurate age to constrain salt sequences is very limited hindering further exploration for climatic changes and genetic mechanism of potash resources. For the first time, this work used MC-ICP-MS U-series to date halite of Lop Nur. The obtained results combined with previous age data will provide new age constrains on salt sequences in this area and improve our understanding of phased evolution of saline lake and the formation of potash deposits on a time scale.
Objective Quaternary saline lakes are significant for paleoclimatic reconstruction due to the high sensitivity of salt minerals to environmental changes. However, salts in these areas with great thickness such as halite or potash representing extreme environments have severely blocked the application of traditional chronological methods. This is typified by Lop Nut, since accurate age to constrain salt sequences is very limited hindering further exploration for climatic changes and genetic mechanism of potash resources. For the first time, this work used MC-ICP-MS U-series to date halite of Lop Nur. The obtained results combined with previous age data will provide new age constrains on salt sequences in this area and improve our understanding of phased evolution of saline lake and the formation of potash deposits on a time scale.
基金
supported by the State Key Program of National Natural Science of China(gratn No.40830420)
the open fund of MLR Key Laboratory of Metallogeny and Mineral Assessment(grant No.ZS1705)
