The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing
High resolution seismic pro®les (PARASOUND, 4 kHz) and three sediment cores from the Franz Victoria Trough and the adjacent continental slope were studied in order to constrain the timing and extent of the northern Svalbard/Barents Sea ice sheet during the Late Weichselian glaciation. Stacked debris...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2000
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.8176 http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.549.8176 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.549.8176 2023-05-15T15:38:03+02:00 The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing H. P. Kleiber J. Knies F. Niessen The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.8176 http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.8176 http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf Marine geology Paleoclimate Barents Sea Last glacial maximum text 2000 ftciteseerx 2016-01-08T11:27:44Z High resolution seismic pro®les (PARASOUND, 4 kHz) and three sediment cores from the Franz Victoria Trough and the adjacent continental slope were studied in order to constrain the timing and extent of the northern Svalbard/Barents Sea ice sheet during the Late Weichselian glaciation. Stacked debris ¯ow lobes and layers of glacimarine diamicton on the lower continental slope indicate that large quantities of glacially derived sediments were deposited by the northern Svalbard/Barents Sea ice sheet directly onto the upper continental slope at approximately 23 14C ka. A grounding-line advance to the shelf break is supported by the identi®cation of diamicton, interpreted as till, in the seismic pro®le near the shelf break. After several ice sheet instabilities marked by signi®cant input of ice rafted detritus to the continental margin, the disintegration of the northern Svalbard/Barents Sea ice sheet (Termination Ia) is indicated by a distinct pulse of ice rafted detritus at 15.4 14C ka and the transition to an isotopically de®ned meltwater signal. The drastic change in sedimentary pattern on the upper continental slope, dated to about 13.4 14C ka, is interpreted as grounding-line retreat from the shelf edge. A further stepwise retreat of the northern Svalbard/Barents Sea ice sheet is indicated by pulses of ice rafted detritus which appear to be contemporaneous with the onset of distinct ice rafting events in adjacent areas and pulses of glacimarine sedimentation in the southwestern Barents Sea. q 2000 Text Barents Sea Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet Unknown Barents Sea Svalbard |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Marine geology Paleoclimate Barents Sea Last glacial maximum |
spellingShingle |
Marine geology Paleoclimate Barents Sea Last glacial maximum H. P. Kleiber J. Knies F. Niessen The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
topic_facet |
Marine geology Paleoclimate Barents Sea Last glacial maximum |
description |
High resolution seismic pro®les (PARASOUND, 4 kHz) and three sediment cores from the Franz Victoria Trough and the adjacent continental slope were studied in order to constrain the timing and extent of the northern Svalbard/Barents Sea ice sheet during the Late Weichselian glaciation. Stacked debris ¯ow lobes and layers of glacimarine diamicton on the lower continental slope indicate that large quantities of glacially derived sediments were deposited by the northern Svalbard/Barents Sea ice sheet directly onto the upper continental slope at approximately 23 14C ka. A grounding-line advance to the shelf break is supported by the identi®cation of diamicton, interpreted as till, in the seismic pro®le near the shelf break. After several ice sheet instabilities marked by signi®cant input of ice rafted detritus to the continental margin, the disintegration of the northern Svalbard/Barents Sea ice sheet (Termination Ia) is indicated by a distinct pulse of ice rafted detritus at 15.4 14C ka and the transition to an isotopically de®ned meltwater signal. The drastic change in sedimentary pattern on the upper continental slope, dated to about 13.4 14C ka, is interpreted as grounding-line retreat from the shelf edge. A further stepwise retreat of the northern Svalbard/Barents Sea ice sheet is indicated by pulses of ice rafted detritus which appear to be contemporaneous with the onset of distinct ice rafting events in adjacent areas and pulses of glacimarine sedimentation in the southwestern Barents Sea. q 2000 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
H. P. Kleiber J. Knies F. Niessen |
author_facet |
H. P. Kleiber J. Knies F. Niessen |
author_sort |
H. P. Kleiber |
title |
The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
title_short |
The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
title_full |
The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
title_fullStr |
The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
title_full_unstemmed |
The Late Weichselian glaciation of the Franz Victoria Through, northern Barents Sea: ice sheet extent and timing |
title_sort |
late weichselian glaciation of the franz victoria through, northern barents sea: ice sheet extent and timing |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.8176 http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf |
geographic |
Barents Sea Svalbard |
geographic_facet |
Barents Sea Svalbard |
genre |
Barents Sea Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
genre_facet |
Barents Sea Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
op_source |
http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.8176 http://www.ngu.no/glacipet/photos/internal/pdfs_of_articles/kleiber_knies_niessen2000.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766368748215730176 |