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作者对1973—1975年中国科学院青藏高原综合科学考察队和1975年中国登山队科考分队地质组,在西藏南部和珠穆朗玛峰(以下简称珠峰)地区采集的部分同位素地质年龄样品,经镜下鉴定,选择适宜者用钾氩法做了同位素地质年龄的测定,从而对本区广泛出露的岩浆岩和变质岩的时空分布特征加深了认识。在工作中钾是用火焰光度法测定的。放射成因氩的含量大部分是用体积法测定,小部分用以Ar~(38)为稀释剂的稀释法测定。计算年龄时采用的常数是:
The author of 1973-1975 Chinese Academy of Sciences Qinghai-Tibet Plateau integrated scientific expedition team and the 1975 Chinese mountaineering expedition group geology group, in southern Tibet and Everest (hereinafter referred to as Everest) collected part of the isotope geological age samples, under the microscope Identification and selection of suitable methods were determined by isotope geologic age using potassium-argon method, which deepens the understanding of the temporal and spatial distribution of magmatic rocks and metamorphic rocks that are widely exposed in this area. Potassium is measured by flame photometry at work. Radiogenic argon content is mostly determined by the volume method, a small part of the Ar ~ (38) as a diluent dilution method. The constants used in calculating age are: