杨爱华,朱茂炎,张俊明

• 1:南京大学地球科学系
• 2:中国科学院南京地质古生物研究所
• 3:现代古生物学和地层学国家重点实验室

摘要(Abstract)：

皖南和浙西地区寒武系下部黑色岩系地层发育差异明显,常见的岩石地层单位为黄柏岭组和荷塘组。近年来在岩石地层清理中,黄柏岭组和荷塘组的定义被不断修订。随着寒武纪年代地层划分精度的提高及科研和生产的需要,皖南和浙西地区寒武系下部黑色岩系的划分和年代地层对比需要进一步明确。着重从三叶虫盘虫类的生物地层学与岩石地层学的角度讨论了黄柏岭组和荷塘组年代地层和它们的穿时性问题,认为黄柏岭组为跨时代的岩石地层单位,下段至中段下部时代可能为筇竹寺期,中段中上部为沧浪铺早期,上段为沧浪铺中期至龙王庙期。休宁蓝田荷塘组底部的石煤层与东至庞汪村剖面黄柏岭组底部的石煤层时代可能相当。而浙西地区的荷塘组与皖南地区的荷塘组时代差异巨大,两者底部石煤层底界为不等时面,因此不能作为地层对比的标志层。两个地区下寒武统荷塘组的年代对比应具体剖面具体对待。

关键词(KeyWords)： 年代地层学;古盘虫类;石煤层;黑色页岩;黄柏岭组;荷塘组;寒武系;皖南;浙西

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40702002,40725005,40572006,40372020);; 科技部项目(2006CB806401,2006FY120300)资助

作者(Author): 杨爱华,朱茂炎,张俊明

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