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Seismic stratigraphy and evolution of the Raggatt Basin, southern Kerguelen Plateau

Seismic stratigraphy and evolution of the Raggatt Basin, southern Kerguelen Plateau
Seismic stratigraphy and evolution of the Raggatt Basin, southern Kerguelen Plateau
Six major seismic stratigraphic sequences in the Raggatt Basin on the southern Kerguelen Plateau overlie a basement complex of Cretaceous or greater age. The complex includes dipping reflectors which were apparently folded and eroded before the Raggatt Basin developed. The seismic stratigraphic sequences include a basal unit F, which fills depressions in basement; a thick unit, E, which has a mounded upper surface (volcanic or carbonate mounds); a depression-filling unit, D; a thick unit C which is partly Middle to Late Eocene; and two post-Eocene units, A and B, which are relatively thin and more limited in areal extent than the underlying sequences. A mid or Late Cretaceous erosional episode was followed by subsidence and basin development, interrupted by major erosion in the mid Tertiary. Late Cenozoic sedimentation was affected by vigorous ocean currents.
Southern Indian Ocean, Kerguelen Plateau, Raggatt Basin, Cretaceous, seismic stratigraphy, tectonic evolution, ocean currents
0264-8172
75-81
Colwell, J.B.
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Coffin, M.F.
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Pigram, C.J.
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Davies, H.L.
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Stagg, H.M.J.
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Hill, P.J.
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Colwell, J.B.
f08effc2-c4dc-465d-864a-df6e7fe329d5
Coffin, M.F.
b8285650-5efd-4129-ae91-1cf3f5911e89
Pigram, C.J.
6cbf1b07-ea3e-4054-b1ab-b16b7bc88d24
Davies, H.L.
0d9fe44c-542e-4c7d-af87-cc41620b8370
Stagg, H.M.J.
a9a010e4-712e-4c17-803a-cfdab2743ad7
Hill, P.J.
0771cd37-d880-4ab9-95f9-342cb5eb5733

Colwell, J.B., Coffin, M.F., Pigram, C.J., Davies, H.L., Stagg, H.M.J. and Hill, P.J. (1988) Seismic stratigraphy and evolution of the Raggatt Basin, southern Kerguelen Plateau. Marine and Petroleum Geology, 5 (1), 75-81. (doi:10.1016/0264-8172(88)90041-4).

Record type: Article

Abstract

Six major seismic stratigraphic sequences in the Raggatt Basin on the southern Kerguelen Plateau overlie a basement complex of Cretaceous or greater age. The complex includes dipping reflectors which were apparently folded and eroded before the Raggatt Basin developed. The seismic stratigraphic sequences include a basal unit F, which fills depressions in basement; a thick unit, E, which has a mounded upper surface (volcanic or carbonate mounds); a depression-filling unit, D; a thick unit C which is partly Middle to Late Eocene; and two post-Eocene units, A and B, which are relatively thin and more limited in areal extent than the underlying sequences. A mid or Late Cretaceous erosional episode was followed by subsidence and basin development, interrupted by major erosion in the mid Tertiary. Late Cenozoic sedimentation was affected by vigorous ocean currents.

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More information

Published date: February 1988
Keywords: Southern Indian Ocean, Kerguelen Plateau, Raggatt Basin, Cretaceous, seismic stratigraphy, tectonic evolution, ocean currents

Identifiers

Local EPrints ID: 50575
URI: https://eprints.soton.ac.uk/id/eprint/50575
ISSN: 0264-8172
PURE UUID: 0e8ec0f6-1885-49a4-870f-6bfc28b2d75c

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Date deposited: 06 Mar 2008
Last modified: 13 Mar 2019 20:51

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Contributors

Author: J.B. Colwell
Author: M.F. Coffin
Author: C.J. Pigram
Author: H.L. Davies
Author: H.M.J. Stagg
Author: P.J. Hill

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