Handwerger, David A.; Jarrard, Richard D. (2003): Neogene changes in Southern Ocean sedimentation based on mass accumulation rates at four continental margins. American Geophysical Union, Washington, DC, United States, Paleoceanography, 18 (4), georefid:2007-019614
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.)
Coverage:
West: -176.3154 East: 149.5600 North: -39.2954 South: -66.5907
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