Lake sediment stratigraphy, radiocarbon chronology, geochemically characterized tephra and mineralogy reveal ice-free conditions on coastal Spitsbergen during Last Glacial
This dataset characterizes the first pre-Holocene lake sediments from Arctic Svalbard. Three bryophyte-derived 14C ages reveal that the targeted sequences was deposited between 30 and 20 ka BP - indicating ice-free and vegetated conditions during the Last Glacial Maximum. We also fingerprint a new v...
Main Authors: | , |
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Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2019
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.907862 https://doi.org/10.1594/PANGAEA.907862 |
Summary: | This dataset characterizes the first pre-Holocene lake sediments from Arctic Svalbard. Three bryophyte-derived 14C ages reveal that the targeted sequences was deposited between 30 and 20 ka BP - indicating ice-free and vegetated conditions during the Last Glacial Maximum. We also fingerprint a new volcanic ash (tephra) marker, whose distinct shard maximum and homogeneous geochemistry suggest direct deposition by air fall, as well as an Azorean provenance. We also present X-Ray Diffraction (XRD) mineralogical data from the presented sediments to allay concerns about the impact of old carbon on the presented radiocarbon ages. |
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