A study of paleoclimates as reflected in the mass accumulation rate of ice-rafted debris recovered from ODP Leg 152, Site 918

• Main Author: Albrecht, Jessica Lynn, 1972-
• Other Authors: Krissek, Lawrence A.
• Format: Thesis
• Language: English
• Published: The Ohio State University 1998
• Subjects: Greenland; Irminger Basin
• Online Access: http://hdl.handle.net/1811/58499

Glaciomarine sediments recently recovered from the Irminger Basin provide the first available long-term record of ice-rafting activity along the southeastern Greenland margin, from the Pleistocene through the late Miocene. Ice-rafted debris mass accumulation rates (IRD MARs) of coarse (250 ?m to 2 mm) terrigenous material in the Irminger Basin were investigated for the last 1.40 My (early Pleistocene). Intensification in IRD MAR peaks throughout the mid-Pleistocene appears to indicate at least a regional change in the history of glaciation along the SE coast of Greenland. Observations made in this study-particularly at 880 Ka-are consistent with the proposal of a mid Pleistocene climate shift in paleoclimatic records.