Sedimentation and mineral analysis on sediment cores from the Lena Delta

Core and outcrop analysis from Lena mouth deposits have been used to reconstruct the Late Quaternary sedimentation history of the Lena Delta. Sediment properties (heavy mineral composition, grain size characteristics, organic carbon content) and age determinations (14C AMS and IR-OSL) are applied to discriminate the main sedimentary units of the three major geomorphic terraces, which form the delta. The development of the terraces is controlled by complex interactions among the following four factors: (1) Channel migration. According to the distribution of 14C and IR-OSL age determinations of Lena mouth sediments, the major river runoff direction shifted from the west during marine isotope stages 5-3 (third terrace deposits) towards the northwest during marine isotope stage 2 and transition to stage 1 (second terrace), to the northeast and east during the Holocene (first terrace deposits). (2) Eustasy. […]

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Dataset extent

Map data © OpenStreetMap contributors
Source https://doi.pangaea.de/10.1594/PANGAEA.728539
Version 1.0
Citation None
Authors
  • Author Name: Georg Schwamborn
Temporal coverage
  • Temporal coverage start: 1998-08-01T00:00:00  Temporal coverage end: 2000-05-08T00:00:00
Spatial coverage { "coordinates": [ [ [ 127.185166666666, 72.3451666666666 ], [ 127.185166666666, 73.3263333333333 ], [ 123.180833333333, 73.3263333333333 ], [ 123.180833333333, 72.3451666666666 ], [ 127.185166666666, 72.3451666666666 ] ] ], "type": "Polygon" }
Station research-station-samoylov-island
Collaborator
Variable measured
Measurement Technique
    Date published 2002-10-14
    Date modified
    Status
    Publisher
    • Publisher name: PANGAEA  Publisher URL: https://www.pangaea.de/
    Provider
    License https://creativecommons.org/licenses/by/3.0/