Ultra-Violet Laser Ablation Microprobe (UV-LAMP) extraction technique enables the direct investigation of Ar-Ar age profile in crystals, and yields more information on rates and durations of geological process than co...Ultra-Violet Laser Ablation Microprobe (UV-LAMP) extraction technique enables the direct investigation of Ar-Ar age profile in crystals, and yields more information on rates and durations of geological process than conven-tional single time snapshots. Phlogopite flakes from lampro-phyre at Pishan dyke in western Kunlun were dated by using an UV laser (l = 213 nm) microprobe with spot analyses. The results show good agreement with those from the conven-tional 40Ar/39Ar step heating experiments. This indicates that the Ar isotopes are distributed homogenously in the phlogopite and the UVLAMP can be a powerful tool in the study of thermal history.展开更多
文摘Ultra-Violet Laser Ablation Microprobe (UV-LAMP) extraction technique enables the direct investigation of Ar-Ar age profile in crystals, and yields more information on rates and durations of geological process than conven-tional single time snapshots. Phlogopite flakes from lampro-phyre at Pishan dyke in western Kunlun were dated by using an UV laser (l = 213 nm) microprobe with spot analyses. The results show good agreement with those from the conven-tional 40Ar/39Ar step heating experiments. This indicates that the Ar isotopes are distributed homogenously in the phlogopite and the UVLAMP can be a powerful tool in the study of thermal history.
