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Geological Society, London, Special Publications; 2002; v. 203; p. 367-373;
DOI: 10.1144/GSL.SP.2002.203.01.19
© 2002 Geological Society of London

Observations of surge periodicity in East Greenland using molybdenum records from marine sediment cores

John Woodward1, Steve Carver2, Helmar Kunzendorf3 & Ole Bennike4

1 Physical Sciences Division, British Antarctic Survey, Natural Environmental Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK jwoo{at}bas.ac.uk
2 School of Geography, University of Leeds, Leeds LS2 9JT, UK
3 Plant Biology and Biogeochemistry, RISØ National Laboratory, Roskilde, DK-4000
4 GEUS, Thoravej 8, 2400 København NV, Denmark

This paper describes a unique record of glacier flow instability for East Greenland during the Little Ice Age. Trace metal analysis of sediment cores collected during 1998 from the Noret Inlet in the Mesters Vig area of East Greenland shows two peaks in the molybdenum (Mo) record at 495 ± 40 years BP and 95 ± 2 years BP. This is notable as there is no molybdenum mineralization in the geology of the Noret Inlet catchment area. Molybdenum is found, however, in the drainage basin of Mesters Vig Inlet, just to the south of the Noret Inlet. The molybdenum record in the Noret core provides a long-term surge record for the Östre Gletscher, a large surge-type glacier in the Werner Bjerge that drains into Mesters Vig Inlet. The two molybdenum peaks indicate surge termination for the glacier, indicating a surge recurrence interval of around 400 years.