Glacial history of interior Jameson Land, East Greenland
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...
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Format: | Article in Journal/Newspaper |
Language: | English |
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John Wiley & Sons Inc.
1994
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Online Access: | https://lup.lub.lu.se/record/092e0260-5b72-4076-9ace-4a9654acbd59 https://doi.org/10.1111/j.1502-3885.1994.tb00604.x |
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ftulundlup:oai:lup.lub.lu.se:092e0260-5b72-4076-9ace-4a9654acbd59 2023-05-15T16:03:53+02:00 Glacial history of interior Jameson Land, East Greenland Möller, Per Hjort, Christian Adrielsson, Lena Salvigsen, Otto 1994 https://lup.lub.lu.se/record/092e0260-5b72-4076-9ace-4a9654acbd59 https://doi.org/10.1111/j.1502-3885.1994.tb00604.x eng eng John Wiley & Sons Inc. https://lup.lub.lu.se/record/092e0260-5b72-4076-9ace-4a9654acbd59 http://dx.doi.org/10.1111/j.1502-3885.1994.tb00604.x scopus:0028591666 Boreas; 23(4), pp 320-348 (1994) ISSN: 1502-3885 Geology contributiontojournal/article info:eu-repo/semantics/article text 1994 ftulundlup https://doi.org/10.1111/j.1502-3885.1994.tb00604.x 2023-02-01T23:39:04Z 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. Article in Journal/Newspaper East Greenland Greenland Scoresby Sund Lund University Publications (LUP) Greenland Sund ENVELOPE(13.644,13.644,66.207,66.207) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Jameson Land ENVELOPE(-23.500,-23.500,71.167,71.167) Lollandselv ENVELOPE(-24.233,-24.233,70.900,70.900) Boreas 23 4 320 348 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Möller, Per Hjort, Christian Adrielsson, Lena Salvigsen, Otto Glacial history of interior Jameson Land, East Greenland |
topic_facet |
Geology |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Möller, Per Hjort, Christian Adrielsson, Lena Salvigsen, Otto |
author_facet |
Möller, Per Hjort, Christian Adrielsson, Lena Salvigsen, Otto |
author_sort |
Möller, Per |
title |
Glacial history of interior Jameson Land, East Greenland |
title_short |
Glacial history of interior Jameson Land, East Greenland |
title_full |
Glacial history of interior Jameson Land, East Greenland |
title_fullStr |
Glacial history of interior Jameson Land, East Greenland |
title_full_unstemmed |
Glacial history of interior Jameson Land, East Greenland |
title_sort |
glacial history of interior jameson land, east greenland |
publisher |
John Wiley & Sons Inc. |
publishDate |
1994 |
url |
https://lup.lub.lu.se/record/092e0260-5b72-4076-9ace-4a9654acbd59 https://doi.org/10.1111/j.1502-3885.1994.tb00604.x |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(-23.500,-23.500,71.167,71.167) ENVELOPE(-24.233,-24.233,70.900,70.900) |
geographic |
Greenland Sund Scoresby Scoresby Sund Jameson Land Lollandselv |
geographic_facet |
Greenland Sund Scoresby Scoresby Sund Jameson Land Lollandselv |
genre |
East Greenland Greenland Scoresby Sund |
genre_facet |
East Greenland Greenland Scoresby Sund |
op_source |
Boreas; 23(4), pp 320-348 (1994) ISSN: 1502-3885 |
op_relation |
https://lup.lub.lu.se/record/092e0260-5b72-4076-9ace-4a9654acbd59 http://dx.doi.org/10.1111/j.1502-3885.1994.tb00604.x scopus:0028591666 |
op_doi |
https://doi.org/10.1111/j.1502-3885.1994.tb00604.x |
container_title |
Boreas |
container_volume |
23 |
container_issue |
4 |
container_start_page |
320 |
op_container_end_page |
348 |
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1766399567694135296 |