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Glacial history of interior Jameson Land, East Greenland

Möller, Per LU orcid ; Hjort, Christian LU ; Adrielsson, Lena LU and Salvigsen, Otto (1994) In Boreas 23(4). p.320-348
Abstract
The plateaus between 400 and 800 m a.s.l. around the water-divides on central and eastern Janieson Land are covered by the ‘Jameson Land Drift’ up to 50 m thick glacial. placiotluvial and glaciolacustrine deposits. A high content of far-travelled wcsterii rocks indicates the overriding by extensive glaciers channelled from the west through the Scoresby Sund basin. The Jameson Land Drift deposits have bccn lithostratigraphically divided into two groups. each representing the sedimentary successions from one glaciation in the wider sense of the word. sediments from the lower Lollandselv glaciation are upwards delimited by a distinct periglacial surface. TL-dates suggest a prc-Saalian (approximately isotope stages 11–9) age. The following... (More)
The plateaus between 400 and 800 m a.s.l. around the water-divides on central and eastern Janieson Land are covered by the ‘Jameson Land Drift’ up to 50 m thick glacial. placiotluvial and glaciolacustrine deposits. A high content of far-travelled wcsterii rocks indicates the overriding by extensive glaciers channelled from the west through the Scoresby Sund basin. The Jameson Land Drift deposits have bccn lithostratigraphically divided into two groups. each representing the sedimentary successions from one glaciation in the wider sense of the word. sediments from the lower Lollandselv glaciation are upwards delimited by a distinct periglacial surface. TL-dates suggest a prc-Saalian (approximately isotope stages 11–9) age. The following Scoreshby Sund glaciation. when most of the studied Jameson Land Drift sediments were laid down. is of Saalian age (e. isotope stages 8 6). The deposits from the Scoresby Sund glaciation are interpreted as representing a complete glaciation deglaciation succession, including proglacial sandur and glaciolacustrine sediments. followed by till deposition, with an overlying succession of glaciolacustrinc and glaciofluvial sediments. From 200–250 m to c. 400 m a.s.l. there is a driftless area, exposing Jurassic sandstones, probably a result of intensive and long-lasting periglacial erosion. Extensive occurrences of tors and of glaciofluvially (subglacially as well as subaerially) eroded canyons and channels characterize the landscape. A similar. although less well defined. upper driftless zone is found above c 500 m a.s.l. on northern Jameson Land, north of the drift-covered plateaus. During the Wcichsclian (isotope stages 5d 2). thick glacial. fluvial and marine deposits were laid down in a coastal zone below c. 200 m a.s.l., and only cold-based local ice caps seem to have existed on the interior plateaus of Jameson Land. The now driftless areas were characterized by periglacial erosion during this period.
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publishing date
type
Contribution to journal
publication status
published
subject
in
Boreas
volume
23
issue
4
pages
320 - 348
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:0028591666
ISSN
1502-3885
DOI
10.1111/j.1502-3885.1994.tb00604.x
language
English
LU publication?
yes
id
092e0260-5b72-4076-9ace-4a9654acbd59
date added to LUP
2020-08-05 15:28:35
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2021-12-29 14:16:06
@article{092e0260-5b72-4076-9ace-4a9654acbd59,
  abstract     = {{The plateaus between 400 and 800 m a.s.l. around the water-divides on central and eastern Janieson Land are covered by the ‘Jameson Land Drift’ up to 50 m thick glacial. placiotluvial and glaciolacustrine deposits. A high content of far-travelled wcsterii rocks indicates the overriding by extensive glaciers channelled from the west through the Scoresby Sund basin. The Jameson Land Drift deposits have bccn lithostratigraphically divided into two groups. each representing the sedimentary successions from one glaciation in the wider sense of the word. sediments from the lower Lollandselv glaciation are upwards delimited by a distinct periglacial surface. TL-dates suggest a prc-Saalian (approximately isotope stages 11–9) age. The following Scoreshby Sund glaciation. when most of the studied Jameson Land Drift sediments were laid down. is of Saalian age (e. isotope stages 8 6). The deposits from the Scoresby Sund glaciation are interpreted as representing a complete glaciation deglaciation succession, including proglacial sandur and glaciolacustrine sediments. followed by till deposition, with an overlying succession of glaciolacustrinc and glaciofluvial sediments. From 200–250 m to c. 400 m a.s.l. there is a driftless area, exposing Jurassic sandstones, probably a result of intensive and long-lasting periglacial erosion. Extensive occurrences of tors and of glaciofluvially (subglacially as well as subaerially) eroded canyons and channels characterize the landscape. A similar. although less well defined. upper driftless zone is found above c 500 m a.s.l. on northern Jameson Land, north of the drift-covered plateaus. During the Wcichsclian (isotope stages 5d 2). thick glacial. fluvial and marine deposits were laid down in a coastal zone below c. 200 m a.s.l., and only cold-based local ice caps seem to have existed on the interior plateaus of Jameson Land. The now driftless areas were characterized by periglacial erosion during this period.<br/>}},
  author       = {{Möller, Per and Hjort, Christian and Adrielsson, Lena and Salvigsen, Otto}},
  issn         = {{1502-3885}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{320--348}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Boreas}},
  title        = {{Glacial history of interior Jameson Land, East Greenland}},
  url          = {{http://dx.doi.org/10.1111/j.1502-3885.1994.tb00604.x}},
  doi          = {{10.1111/j.1502-3885.1994.tb00604.x}},
  volume       = {{23}},
  year         = {{1994}},
}