Handwerger, David A. and Jarrard, Richard D. (2003): Neogene changes in Southern Ocean sedimentation based on mass accumulation rates at four continental margins
Leg/Site/Hole:
Related Expeditions:
ODP 178
Identifier:
ID:
2007-019614
Type:
georefid
ID:
10.1029/2002PA000850
Type:
doi
Creator:
Name:
Handwerger, David A.
Affiliation:
University of Utah, Department of Geology and Geophysics, Salt Lake City, UT, United States
Role:
author
Name:
Jarrard, Richard D.
Affiliation:
Role:
author
Identification:
Title:
Neogene changes in Southern Ocean sedimentation based on mass accumulation rates at four continental margins
Year:
2003
Source:
Paleoceanography
Publisher:
American Geophysical Union, Washington, DC, United States
Volume:
18
Issue:
4
Pages:
Abstract:
High-resolution mass accumulation rates (MAR) were determined from lithologic logs based on downhole log and continuous core data for six sites at four continental margins around the Southern Ocean. Total MAR was calculated at Ocean Drilling Program (ODP) Site 1095 on the margin of the Antarctic Peninsula and ODP Site 1165 on the margin of Prydz Bay, Antarctica. Carbonate and noncarbonate (terrigenous) MAR were calculated for ODP Sites 1123 and 1124 east of New Zealand and Sites 1168 and 1172 west and southeast of Tasmania. Shifts in carbonate MAR are seen around Tasmania and New Zealand at 23 and 14 Ma, suggesting changes in deep water circulation and surface carbonate productivity at these times. (mod. journ. abst.)
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:-39.2954 West:-176.3154 East:
149.5600 South:-66.5907
Keywords: Stratigraphy; Antarctic Circumpolar Current; Antarctic ice sheet; Antarctic Peninsula; Antarctica; Australasia; Cenozoic; continental margin; cores; currents; East Antarctic ice sheet; Leg 178; Leg 181; Leg 188; Leg 189; lithofacies; marine sedimentation; marine sediments; Neogene; New Zealand; ocean circulation; ocean currents; Ocean Drilling Program; ODP Site 1095; ODP Site 1123; ODP Site 1124; ODP Site 1165; ODP Site 1168; ODP Site 1172; paleo-oceanography; paleoclimatology; sedimentation; sediments; Southern Ocean; Tertiary;
.