济阳坳陷老斜452井介形类化石及其地层意义DISCOVERY OF FOSSIL OSTRACODES IN WELL LAOXIE 452 IN THE JIYANG SAG AND ITS STRATIGRAPHIC SIGNIFICANCE
邓美寅,淳萍,李家贵,葛瑞全
摘要(Abstract):
在对济阳坳陷老斜452井的古生物分析中,发现穴状女星介(相似种)Cypridea(Cypridea)cf.cavernosa、蒙阴女星介C.(C.)mengyinensis等介形类化石,说明该地区发育了白垩纪地层。济阳坳陷中生代地层的细分主要是依据区域岩性、电性及孢粉化石等地质资料,但白垩系的岩性、电性与上下地层相似,且化石稀少,缺乏充足的古生物资料,因此难以系统、准确地划分。老斜452井发现介形类化石给济阳坳陷白垩系的细分提供了重要的古生物学依据,为该区的深入研究提供了翔实的基础资料。
关键词(KeyWords): 老斜452井;介形类;生物地层;白垩系;济阳坳陷;山东
基金项目(Foundation):
作者(Author): 邓美寅,淳萍,李家贵,葛瑞全
DOI: 10.19839/j.cnki.dcxzz.2007.s2.012
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