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Showing 1 to 9 of 9 for “"Cretaceous/Tertiary boundary"”.
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Cretaceous-Tertiary boundary clays in central India
Not Available
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Dinoflagellate biostratigraphy of the Cretaceous-Tertiary boundary, Round Bay, Maryland
… of the assemblage changes suddenly at the Cretaceous-Tertiary boundary with thirteen species making the~r first appearance at or just above the boundary. Nineteen species cross the boundary and thirty-five species are restricted to the Cretaceous. The rather sudden change in the nature of …
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The benthonic foraminifera across the Cretaceous-Tertiary boundary in the Zin Valley, Negev, Israel
… Ein Mor (EM) and Hor HaHar (HH) containing the Cretaceous-Tertiary (K/T) boundary, have been analysed for benthonic foraminifera within the framework of nannofossil and planktonic foraminiferal zones.In Israel there exists section below the defined K/T boundary, containing the 'Danian' …
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Paleoenvironmental Variability across the Cretaceous-Tertiary Boundary in the Alberta Foreland Basin, as Interpreted from Fluvial Deposits and Paleosols, Red Deer River Valley, Alberta, Canada.
… paleotectonic and paleopedogenic data across the Cretaceous-Tertiary (KT) boundary of south-central Alberta indicates fluvial aggradation and variability of paleosol morphology in response to foreland orogenesis. The depositional history records an evolution from amalgamated, multi-story, braided …
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Palaeogene ostracods from the South African continental shelf
… genera and 3 species are common with the Upper Cretaceous faunas. 12 genera (18 species) are left in open nomenclature. The following genera are represented:- Bythoceratina, Incongruellina, Ruggieria, Eucythere, Krithe, Parakrithe, Eucytherura, Cytheropteron, Ambostracon, Urocythereis, …
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The effects of mass extinction on escalation of the naticid gastropod predator-prey system at the Eocene-Oligocene
… was tested at the Eocene Oligocene extinction boundary in central Mississippi. The levels of escalation of specimens from the Moodys Branch Formation, which lies below the extinction boundary, and the Red Bluff Formation, which lies above the extinction boundary, were compared. The comparison …
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Volcanic architecture of the Deccan Traps, western Maharashtra, India: an integrated chemostratigraphic and paleomagnetic study
… the lavas were emplaced around the time of the Cretaceous-Tertiary Boundary and because there is access to exposed lavas on three of its four sides, permitting investigation of the volcanic architecture in 3-D. Besides characteristics of the lava units, the logs include integrated geochemical …
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Campanian-Maestrichtian and Paleocene dinoflagellate and acritarch assemblages from the Maryland-Delaware Coastal Plain
The taxonomy and biostratigraphy of Upper Cretaceous and Paleocene dinoflagellate and acritarch assemblages from the Maryland-Delaware Coastal Plain have been investigated from strata outcropping near Washington, D.C., to the eastern end of the Chesapeake and Delaware Canal, Delaware. Samples of …