Postglacial relative sea-level history: sediment and diatom records of emerged coastal lakes, north-central Kola Peninsula, Russia

Autor:	Steven L. Forman, Jeffrey A. Snyder, Gennady A. Tarasov, William N. Mode
Rok vydání:	2008
Předmět:	Shore Archeology geography geography.geographical_feature_category Macrofossil Sediment Geology law.invention Oceanography law Deglaciation Radiocarbon dating Younger Dryas Ecology Evolution Behavior and Systematics Sea level Chronology
Zdroj:	Boreas. 26:329-346
ISSN:	1502-3885 0300-9483
DOI:	10.1111/j.1502-3885.1997.tb00859.x
Popis:	Sediment cores recovered from four emerged lakes (54, 41, 22, and 7 m a.s.l.) provide new data on the deglaciation and relative sea-level history of the Murman coast, Kola Peninsula. The transition from marine to lacustrine sediment is identified in the cores by analysis of sediment physical properties and diatom assemblages. Fourteen AMS-radiocarbon ages on organic macrofossils isolated from core sediment provide chronology for the records. Basal ages from two of the cores indicate deglaciation of the area prior to 11000 BP. Radiocarbon ages associated with the marine-lacustrine sediment transition in the cores further constrain the emergence history of the area. The prominent late-glacial shoreline on the Murman coast (48 m a.s.l.) is dated to c. 10500–10300 BP, the emergence ages of lake basins 54 and 41 m a.s.l. Glaciofluvial terraces graded to this shore level indicate remnant glaciers on the north-central Kola Peninsula during the Younger Dryas.
Databáze:	OpenAIRE
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