Deep-sea erosional unconformity in the southeastern Gulf of Mexico

Multichannel seismic data and DSDP well information. Corresponding to a 44 to 38.5 m.y. B.P. hiatus, the unconformity was apparently produced by the bottom effects of wind-driven surface currents (paleo-Florida Current) and gravitational mass movements capable of scouring the slope. Intensification...

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Bibliographic Details
Published in:Geology (Boulder) 1983-01, Vol.11 (4), p.215-218
Main Authors: Angstadt, D. M, Austin, Jr, Buffler, R. T
Format: Article
Language:English
Subjects:
Atlantic Ocean
Cenozoic
cores
currents
cyclic processes
Deep Sea Drilling Project
deep-sea sedimentation
DSDP Site 540
DSDP Site 97
Eocene
erosional unconformities
geophysical methods
geophysical surveys
Gulf of Mexico
impacts
IPOD
Leg 10
Leg 77
Marine
marine sedimentation
middle Eocene
multichannel filters
North Atlantic
paleo-oceanography
paleocirculation
paleoclimatology
paleocurrents
Paleogene
processes
sedimentation
seismic methods
stratigraphy
surveys
Tertiary
turbidity currents
unconformities
upper Eocene
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Summary:Multichannel seismic data and DSDP well information. Corresponding to a 44 to 38.5 m.y. B.P. hiatus, the unconformity was apparently produced by the bottom effects of wind-driven surface currents (paleo-Florida Current) and gravitational mass movements capable of scouring the slope. Intensification of these sedimentary processes may have been related to global cooling and a reported drop in sea level in the late Eocene, but it may also have been part of a complex global response to a postulated Paleogene meteorite impact.—Modified journal abstract.
ISSN:0091-7613
1943-2682
DOI:10.1130/0091-7613(1983)11<215:DEUITS>2.0.CO;2