Research output: Contribution to journal › Article › peer-review
Interplay of turbidite and contourite deposition along the Cosmonaut Sea/Enderby Land margin, East Antarctica. / Kuvaas, B.; Kristoffersen, Y.; Guseva, J.; Leitchenkov, G.; Gandjukhin, V.; Løvås, O.; Sand, M.; Brekke, H.
In: Marine Geology, Vol. 217, No. 1-2, 30.05.2005, p. 143-159.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Interplay of turbidite and contourite deposition along the Cosmonaut Sea/Enderby Land margin, East Antarctica
AU - Kuvaas, B.
AU - Kristoffersen, Y.
AU - Guseva, J.
AU - Leitchenkov, G.
AU - Gandjukhin, V.
AU - Løvås, O.
AU - Sand, M.
AU - Brekke, H.
PY - 2005/5/30
Y1 - 2005/5/30
N2 - Multichannel seismic reflection data from the Cosmonaut Sea margin of East Antarctica have been interpreted in terms of depositional processes on the continental rise. A major sediment lens is present below the upper continental rise along the entire Cosmonaut Sea margin. The lens probably consists of sediments supplied from the shelf and slope, being constantly reworked by westward flowing bottom currents redepositing the sediments into a large-scale plastered drift deposit prior to the main glacigenic input along the margin. High-relief elongated and sometimes semicircular depositional structures are found on the upper continental rise, stratigraphically above the regional sediment lens, and were mainly deposited by the action of closely spaced turbidity currents. On the lower continental rise, large-scale sediment bodies extend perpendicular to the continental margin and were deposited as a result of down-slope turbidity transport and westward flowing bottom currents. The elongated sediment mounds on the upper and lower continental rise were deposited after initiation of glacigenic input to the slope and rise.
AB - Multichannel seismic reflection data from the Cosmonaut Sea margin of East Antarctica have been interpreted in terms of depositional processes on the continental rise. A major sediment lens is present below the upper continental rise along the entire Cosmonaut Sea margin. The lens probably consists of sediments supplied from the shelf and slope, being constantly reworked by westward flowing bottom currents redepositing the sediments into a large-scale plastered drift deposit prior to the main glacigenic input along the margin. High-relief elongated and sometimes semicircular depositional structures are found on the upper continental rise, stratigraphically above the regional sediment lens, and were mainly deposited by the action of closely spaced turbidity currents. On the lower continental rise, large-scale sediment bodies extend perpendicular to the continental margin and were deposited as a result of down-slope turbidity transport and westward flowing bottom currents. The elongated sediment mounds on the upper and lower continental rise were deposited after initiation of glacigenic input to the slope and rise.
KW - Antarctica
KW - Contourites
KW - Cosmonaut Sea
KW - Turbidites
UR - http://www.scopus.com/inward/record.url?scp=18844456551&partnerID=8YFLogxK
U2 - 10.1016/j.margeo.2005.02.025
DO - 10.1016/j.margeo.2005.02.025
M3 - Article
AN - SCOPUS:18844456551
VL - 217
SP - 143
EP - 159
JO - Marine Geology
JF - Marine Geology
SN - 0025-3227
IS - 1-2
ER -
ID: 35965081