Chronology, lithology, palynology and biogeochemistry of sediment cores from East Greenland lakes ...
Sediment cores from two lakes in the outer coastal region of East Greenland were investigated for chronology, lithology, palynology, and biogeochemistry. A 10 m long sequence recovered in Basaltsø comprises the entire lake history following the last glaciation of the area, probably during the Prebor...
Main Authors: | , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA
2000
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.734964 https://doi.pangaea.de/10.1594/PANGAEA.734964 |
Summary: | Sediment cores from two lakes in the outer coastal region of East Greenland were investigated for chronology, lithology, palynology, and biogeochemistry. A 10 m long sequence recovered in Basaltsø comprises the entire lake history following the last glaciation of the area, probably during the Preboreal oscillation. This is indicated by a succession from glacial via glaciolimnic to limnic sediments. Deglaciation of the area was associated with a high sedimentation rate, mirrored also in the basal part of a 2.6 m long core from a smaller lake (B1) about 1 km south of Basaltsø. Limnic sedimentation without glacial influence commenced about 10 000 cal. yr BP according to radiocarbon-dated terrestrial plant remains. Biogeochemical and palynological data indicate an early Holocene climatic optimum from 9000 to 6500 cal. yr BP A climatic deterioration began at 6500 cal. yr BP with an increase in snow accumulation, documented by a change in the pollen assemblage and a coinciding change in the grain-size ... : Supplement to: Wagner, Bernd; Melles, Martin; Hahne, Jürgen; Niessen, Frank; Hubberten, Hans-Wolfgang (2000): Holocene deglaciation and climate history of Geographical Society Island, East Greenland - evidence from lake sediments. Palaeogeography, Palaeoclimatology, Palaeoecology, 160(1-2), 45-68 ... |
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