塔里木板块晚奥陶世桃曲坡牙形石属的分布及对比DISTRIBUTION AND CORRELATION OF LATE ORDOVICIAN CONODONT Taoqupognathus IN TARIM PLATE
杜品德,赵治信,杨芝林,黄智斌,谭泽金,章森桂
摘要(Abstract)：
塔里木板块见有桃曲坡牙形石Taoqupognathus An的两个种:Taoqupognathus blandus An和T.tumidus Trotter&Webby。T.blandus的出现层位、产出层位、共生牙形石分子与鄂尔多斯盆地大致相同,始于Belodina compressa/Periodon grandis组合,上延至Yaoxianognathus yaoxianensis带,广泛分布于塔里木库鲁克塔格地区乌里格孜塔格剖面乌里格孜塔格组和轮南、英买力、塔中等二十余口钻井剖面的良里塔格组;T.tumidus见于轮南、英买力、塔中少数钻井剖面良里塔格组上部至桑塔木组Yaoxianognathus yaoxianensis带。Taoqupognathus An的始现层位比澳大利亚低,消失层位比澳大利亚更高;T.tumidus存在层位与澳大利亚大致相当。
关键词(KeyWords)： 生物地层;牙形石;地层对比;Taoqupognathus An;晚奥陶世;塔里木板块;新疆
基金项目(Foundation):
作者(Author): 杜品德,赵治信,杨芝林,黄智斌,谭泽金,章森桂
DOI: 10.19839/j.cnki.dcxzz.2017.04.008
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