Regional patterns of Pleistocene ice-rafted debris flux in the North Pacific

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doi: 10.1029/1999PA900030
Author(s): St. John, Kristen E. K.; Krissek, Lawrence A.
Author Affiliation(s): Primary:
Appalachian State University, Department of Geology, Boone, NC, United States
Other:
Ohio State University, United States
Volume Title: Paleoceanography
Source: Paleoceanography, 14(5), p.653-662. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0883-8305 CODEN: POCGEP
Note: In English. 28 refs.; illus., incl. 2 tables, sketch map
Summary: IRD mass accumulation rate (MAR) records are presented for Deep Sea Drilling Project site 580 and Ocean Drilling Program sites 882 and 887 and are combined with results from previous IRD MAR studies to provide a synthesis of North Pacific Pleistocene ice rafting. Important regional differences in the ice rafting histories of the NW and NE Pacific are highlighted by this synthesis and include (1) significant variations in IRD fluxes across the North Pacific, which identify two major IRD sources, coastal Alaska and coastal Siberia/Kamchatka Peninsula, and (2) significant variations in the timing of IRD supply across the North Pacific, particularly in response to global-scale climatic forcing. These regional differences indicate that local and regional controls on iceberg input, transport, and melting exert a major influence on ice rafting throughout the North Pacific. This suggests that a single generalized ice rafting record for the North Pacific does not adequately describe the complexity of this basin's Pleistocene history.
Year of Publication: 1999
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Cenozoic; Cores; DSDP Site 580; Deep Sea Drilling Project; IPOD; Ice rafting; Indicators; Leg 145; Leg 86; Marine sedimentation; Marine sediments; North Pacific; ODP Site 882; ODP Site 887; Ocean Drilling Program; Pacific Ocean; Pleistocene; Quaternary; Regional patterns; Sedimentation; Sedimentation rates; Sediments
Coordinates: N413728 N413729 E1535835 E1535834
N502148 N502148 E1673600 E1673600
N542155 N542155 W1482647 W1482647
Record ID: 2000009576
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