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准噶尔盆地北部上白垩统—古近系的整体研究程度较之盆地南缘同期地层研究精度低、认识混乱,严重制约了盆地北部的油气勘探研究。本文在结合前人研究的基础上,通过细致的野外工作及室内化石研究,建立了2个轮藻化石组合,为准噶尔盆地北部晚白垩世—古近纪地层划分与对比起到了重要作用。
The overall study of the Upper Cretaceous-Paleogene in the northern Junggar Basin is less accurate and confusing than the study of the same period in the southern margin of the basin, which seriously hindered the exploration of oil and gas in the northern part of the basin. Based on the previous studies, through the careful field work and indoor fossil research, this paper established two charophyte fossil assemblages, which played an important role in the division and contrast of the Late Cretaceous-Paleogene strata in northern Junggar Basin.