塔里木盆地早石炭世早期孢子化石的发现及其地层意义

Discovery of the Earliest Carboniferous Spores from the Tarim Basin

塔里木盆地中部巴楚组生屑灰岩段和下泥岩段产有丰富的孢子化石，Ｖｅｒｒｕｃｏｓｉｓｐｏｒｉｔｅｓｎｉｔｉｄｕｓ和Ｄｉｂｏｌｉｓｐｏｒｉｔｅｓｄｉｓｔｉｎｃｔｕｓ等国内外早石炭世早期分子在该组合的出现，说明巴楚组的时代应为早石炭世早期。结合相关门类化石分析结果表明：盆地泥盆／石炭系界线应置于巴楚组底部，东河塘组的时代为晚泥盆世。

The present paper deals with the spores obtained from the Bachu Formation being composed of the Bioclastic Limestone Member and the Lower Mudstone Member. Comparisons of the present spore assemblage with those of Western Europe suggest an earliest Carboniferous (Tournaisian) age for the Bachu Formation. Based on the spores and other fossils in association with them, the Donghetang Formation is assigned to the Late Devonian in age and the Devonian/Carboniferous boundary is drawn at the base of the Bachu Formation.