Sedimentation history along the East Greenland margin
Geophysical and geological investigations in the Arctic region are very important for a betterunderstanding of the present day global climate. Changes in global climate is one of the highlyspeculative aspect in the Northern Hemipsphere, especially the onset of glaciation. Advancesand retreats of gro...
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2698 2023-05-15T15:14:54+02:00 Sedimentation history along the East Greenland margin Sedimentationsgeschichte entlang des ostgrönländischen Kontinentalrandes Berger, Daniela Miller, Heinrich Jokat, Wilfried Spiegel, Cornelia 2009-06-30 application/pdf https://media.suub.uni-bremen.de/handle/elib/2698 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000115512 eng eng Universität Bremen FB5 Geowissenschaften https://media.suub.uni-bremen.de/handle/elib/2698 urn:nbn:de:gbv:46-diss000115512 info:eu-repo/semantics/openAccess Bitte wählen Sie eine Lizenz aus: (Unsere Empfehlung: CC-BY) CC-BY East Greenland seismic reflection sediment distribution 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2009 ftsubbremen 2022-11-09T07:09:51Z Geophysical and geological investigations in the Arctic region are very important for a betterunderstanding of the present day global climate. Changes in global climate is one of the highlyspeculative aspect in the Northern Hemipsphere, especially the onset of glaciation. Advancesand retreats of grounded ice sheets during glacial-interglacial times play an important role interms of the deposition of large sediment deposits. Depositional pattern on the continentalslope and rise reflect interactions between the effects of ice sheet fluctuations, mass transportprocesses and bottom currents. The main focus of this thesis is the sedimentation historyalong the East Greenland margin in late Cenozoic times. Different seismic reflection surveysgathered between 1997 and 2003, represent the sedimentary structure along this margin fromthe shelf up into the deep sea area. A for the first time an applied seismostratigraphy onthe Northeast Greenland margin made it possible to differenciate between glacial (youngerthan middle Miocene) and pre-glacial (older than middle Miocene) sediment units. Glacialadvances and retreats appear not synchronous along the continental margin. Therefore, eithernorth of 70 degrees N the extension of the shelf by glacial erosion seems to be more intensive likeon the Southeast Greenland margin or the onset of glaciation started earlier in the norththan in the south. The results of the modelling of different sediment maps enables a lotof varibiabilities in the sediment supply along the continental margin. The greatest totalsediment amount is observed in the prolongation of glacial drainage outlets like the ScoresbySund. Other influences on the sediment thickness along this margin are caused by tectonicelements, the opening history of the basins and the existing current activity. The glacialsediment thickness map, however, enables the highest amount of glacial sediments in thenorthern Molloy Basin (around 1500 m), probably caused by mass transport from the ArcticOcean. Analyses of the deep sea sediment ... Doctoral or Postdoctoral Thesis Arctic East Greenland Greenland Ice Sheet Scoresbysund Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Greenland Molloy ENVELOPE(70.065,70.065,-49.360,-49.360) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
East Greenland seismic reflection sediment distribution 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
East Greenland seismic reflection sediment distribution 550 550 Earth sciences and geology ddc:550 Berger, Daniela Sedimentation history along the East Greenland margin |
topic_facet |
East Greenland seismic reflection sediment distribution 550 550 Earth sciences and geology ddc:550 |
description |
Geophysical and geological investigations in the Arctic region are very important for a betterunderstanding of the present day global climate. Changes in global climate is one of the highlyspeculative aspect in the Northern Hemipsphere, especially the onset of glaciation. Advancesand retreats of grounded ice sheets during glacial-interglacial times play an important role interms of the deposition of large sediment deposits. Depositional pattern on the continentalslope and rise reflect interactions between the effects of ice sheet fluctuations, mass transportprocesses and bottom currents. The main focus of this thesis is the sedimentation historyalong the East Greenland margin in late Cenozoic times. Different seismic reflection surveysgathered between 1997 and 2003, represent the sedimentary structure along this margin fromthe shelf up into the deep sea area. A for the first time an applied seismostratigraphy onthe Northeast Greenland margin made it possible to differenciate between glacial (youngerthan middle Miocene) and pre-glacial (older than middle Miocene) sediment units. Glacialadvances and retreats appear not synchronous along the continental margin. Therefore, eithernorth of 70 degrees N the extension of the shelf by glacial erosion seems to be more intensive likeon the Southeast Greenland margin or the onset of glaciation started earlier in the norththan in the south. The results of the modelling of different sediment maps enables a lotof varibiabilities in the sediment supply along the continental margin. The greatest totalsediment amount is observed in the prolongation of glacial drainage outlets like the ScoresbySund. Other influences on the sediment thickness along this margin are caused by tectonicelements, the opening history of the basins and the existing current activity. The glacialsediment thickness map, however, enables the highest amount of glacial sediments in thenorthern Molloy Basin (around 1500 m), probably caused by mass transport from the ArcticOcean. Analyses of the deep sea sediment ... |
author2 |
Miller, Heinrich Jokat, Wilfried Spiegel, Cornelia |
format |
Doctoral or Postdoctoral Thesis |
author |
Berger, Daniela |
author_facet |
Berger, Daniela |
author_sort |
Berger, Daniela |
title |
Sedimentation history along the East Greenland margin |
title_short |
Sedimentation history along the East Greenland margin |
title_full |
Sedimentation history along the East Greenland margin |
title_fullStr |
Sedimentation history along the East Greenland margin |
title_full_unstemmed |
Sedimentation history along the East Greenland margin |
title_sort |
sedimentation history along the east greenland margin |
publisher |
Universität Bremen |
publishDate |
2009 |
url |
https://media.suub.uni-bremen.de/handle/elib/2698 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000115512 |
long_lat |
ENVELOPE(70.065,70.065,-49.360,-49.360) |
geographic |
Arctic Greenland Molloy |
geographic_facet |
Arctic Greenland Molloy |
genre |
Arctic East Greenland Greenland Ice Sheet Scoresbysund |
genre_facet |
Arctic East Greenland Greenland Ice Sheet Scoresbysund |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2698 urn:nbn:de:gbv:46-diss000115512 |
op_rights |
info:eu-repo/semantics/openAccess Bitte wählen Sie eine Lizenz aus: (Unsere Empfehlung: CC-BY) |
op_rightsnorm |
CC-BY |
_version_ |
1766345295903326208 |