Bohaty, Steven M. and Harwood, David M. (2000): Ebridian and silicoflagellate biostratigraphy from Eocene McMurdo erratics and the Southern Ocean

Leg/Site/Hole:
ODP 120
ODP 120 748
Identifier:
2001-027992
georefid
Creator:
Bohaty, Steven M.
University of Nebraska at Lincoln, Department of Geosciences, Lincoln, NE, United States
author
Harwood, David M.
Kent State University, Australia
author
Identification:
Ebridian and silicoflagellate biostratigraphy from Eocene McMurdo erratics and the Southern Ocean
2000
In: Stilwell, Jeffrey D. (editor), Feldmann, Rodney M. (editor), Paleobiology and paleoenvironments of Eocene rocks, McMurdo Sound, East Antarctica
American Geophysical Union, Washington, DC, United States
76
99-159
Ebridians are abundant and diverse in erratics from McMurdo Sound and indicate an age of late middle to late Eocene. This age assignment is based on reference to ebridian biostratigraphic ranges from Ocean Drilling Project (ODP) Site 748B (Kerguelen Plateau) and CIROS-1 drillcore (McMurdo Sound). Correlation to nannofossil stratigraphy in these cores suggests an absolute age range of 43.7 to 33.7 Ma for the erratics, and the absence of certain ebridian and silicoflagellate taxa in CIROS-1 further constrains the age to >34.9 Ma. Two ebridian biostratigraphic zones for the middle Eocene to lower Oligocene section of ODP Site 748B are proposed: the upper middle to upper Eocene Micromarsupium anceps Partial Range Zone and the lower Oligocene Hermesinum geminum Partial Range Zone. A new ebridian species is described from the CIROS-1 drillcore, Pseudammodochium lingii. (Modified author abstract) d
English
Serial
Coverage:Geographic coordinates:
North:-75.0000
West:162.3000East: 167.0000
South:-78.0000
Stratigraphy; Antarctic Ocean; Antarctica; assemblages; biogeography; biostratigraphy; biozones; Cenozoic; clastic rocks; clastic sediments; correlation; East Antarctica; ebridians; Eocene; erratics; faunal list; glacial environment; Invertebrata; Kerguelen Plateau; Leg 120; lithofacies; McMurdo Sound; microfossils; morphology; new taxa; Ocean Drilling Program; ODP Site 748; Paleogene; Protista; Pseudammodochium lingii; range; Ross Sea; sedimentary rocks; sediments; Silicoflagellata; Southern Ocean; taxonomy; Tertiary;
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