Krissek, L. A.; St. John, K. E. K. (2002): Pleistocene iceberg production from East Greenland; synchronous between source areas, but distinct from global ice volume. Geological Society of Denmark, Copenhagen, Denmark, Bulletin of the Geological Society of Denmark, 49, Part 1, 79-89, georefid:2006-059609
Abstract:
A 1 m.y. ice-rafted debris record (IRD) was developed for Ocean Drilling Program site 919, located in the western Irminger Basin. Compositional analyses of the IRD indicate that the major source regions for IRD found off SE Greenland were the Precambrian igneous and meta-igneous crystalline basement (predominantly gneiss and granite) of southeast Greenland and the Tertiary flood basalts located further north along the East Greenland coast. Temporal covariations in the IRD mass accumulation rates (MARs) of provenance-distinctive grain types suggest that these source areas experienced similar iceberg release histories during the Pleistocene. In contrast, no distinct relationship can be drawn between peaks in the IRD MAR record and oxygen-isotope defined glacial-interglacial cycles, suggesting that the history of IRD input off SE Greenland since 1 Ma was dominated by local, rather than global, climatic and distributional controls.
Coverage:
West: -37.2737 East: -37.2737 North: 62.4012 South: 62.4012
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