Dinoflagellate biostratigraphy of the Maastrichtian to Danian interval in the U.S. geological survey Albany core, Georgia, U.S.A.
Dinoflagellate biostratigraphy of the Maastrichtian to Danian interval in the U.S. geological survey Albany core, Georgia, U.S.A.
复制标题
美国佐治亚州奥尔巴尼核心地质调查马斯特里赫特阶到达尼阶区间的甲藻生物地层学
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发表时间：
1987
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影响因子：
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通讯作者：
J. Firth
中科院分区：
文献类型：
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作者：
J. Firth
Abstract Dinoflagellate assemblages are used to delineate three intervals within the upper Ripley Formation and Providence Sand (Maastrichtian), and the lower Clayton Formation (Danian) in the U.S. Geological Survey Albany core, located near Albany, Georgia. Interval A is interpreted as early Maastrichtian in age, interval B is late Maastrichtian, and interval C is early Danian, based on comparisons with dinoflagellate cyst zonations from the type Maastrichtian and Danian regions. Comparison with a dinoflagellate cyst zonation from the Maastrichtian Severn Formation of Maryland indicates that the lower Severn is correlative with the upper Ripley and lower Providence, and that the upper Severn is correlative with the upper Providence. The Cretaceous‐Tertiary boundary is marked by a minor turnover in organic‐walled phytoplankton species. Some of the uppermost Maastrichtian and lowest Danian may be missing from the section. Variations in the relative abundances of Spiniferites and Manumiella see‐landica indi...
