By characteristic analysis of strontium and sulfurisotopes in the studied area, it was discussed whether the transgression has happened in Paleogene in the Jiyang depression.
通过对研究区锶硫同位素特征分析，探讨济阳坳陷古近纪是否遭受过海侵作用。
2
Based on the fractionation of carbon and sulfurisotopes in the process of petroleum generation and evolvement, the crude oils and their sources in the Tarim Basin have been discussed.
以碳、硫同位素在石油生成演化过程中的分馏作用为基础，对塔里木盆地原油、油源对比进行了探讨。
3
Oxygen isotopes vary with the water cycle, and sulfur with bedrock, so they're location proxies.