Paleogene sporomorph biostratigraphy, Northeastern Virginia
Paleogene sporomorph biostratigraphy, Northeastern Virginia
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弗吉尼亚州东北部古近纪孢子形态生物地层学
DOI：
10.1080/01916122.1979.9989187
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发表时间：
1979
期刊：
影响因子：
1.5
通讯作者：
N. Frederiksen
中科院分区：
文献类型：
--
作者：
N. Frederiksen
本文讨论了62个孢子和花粉粒变型和4个淡水变型(？)微型浮游生物，位于弗吉尼亚州东北部橡树林岩心的古近纪部分。文中还给出了这些分类群在美国东南部的已知地质范围。本文报道了7个新种：Lusatiporis indelcita，Momipites fleus，Nuxpollenites psilatus，Piolencipollis endocuspoides，Porocolollenites virginiensis，Tritriopollenites triangulus，Tricolpites crassus。文中还列出了墨西哥湾沿岸萨布尼期上(始新世下部)和克拉伯里期下部(始新世中下部)的7个样品的孢子形态产状，并对这些样品进行了分析，以便为弗吉尼亚州的组合与美国东南部的组合对比提供额外的控制。几个孢子形态分类群，包括Carya和Kyandopollenites anneratus，似乎在弗吉尼亚州的剖面中分布较低(进入可能的中途岩石)。
Abstract This paper discusses the morphology, taxonomy, and stratigraphic occurrences of 62 forms of spores and pollen grains and four forms of freshwater(?) microplankton, in the Paleogene part of the Oak Grove core from northeastern Virginia. The known geologic ranges of these taxa in southeastern United States are also given. Seven new species are proposed: Lusatisporis indistincta, Momipites flexus, Nuxpollenites psilatus, Piolencipollis endocuspoides, Porocolpopollenites virginiensis, Triatriopollenites triangulus, and Tricolpites crassus. Sporomorph occurrences in seven samples from the upper Sabinian (lower Eocene) and lower Claibornian (lower part of the middle Eocene) of the Gulf Coast are also listed; these samples were analyzed to provide additional control for correlating the assemblages from Virginia with those in southeastern United States. Several sporomorph taxa, including Carya and Kyandopollenites anneratus, appear to range lower in the section (into probable Midwayan rocks) in Virginia ...