新疆准噶尔盆地北部晚白垩世—古近纪轮藻化石研究

LATE CRETACEOUS AND PALEOGENE CHAROPHYTES FROM THE NORTHERN JUNGGAR BASIN,XINJIANG,NORTHWEST CHINA

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 work of Late Cretaceous and Paleogene stratigraphy in the northern Junggar Basin,Xinjiang,Northwest China is much less than that in the southern Junggar Basin.Conflicts in stratigraphy correlation occur frequently,which has negative effects on the oil and gas exploration in the northern Junggar Basin.On the basis of previous work,hard field work and detailed fossil classification,the present paper establishes two charophyta zones.These newly established charophyta zones can play important role in the Late Cretaceous and Paleogene stratigraphy correlation in the northern Junggar Basin.