Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula
Sediments recovered from seven Last Glacial Maximum grounding lines sites, around the Antarctic Peninsula, were analyzed using micromorphology. This is the first evidence that grounding line sediments from around the Antarctic Peninsula have complex deformational histories and subglacial origins. It...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | unknown |
Published: |
Brock University
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/10464/4128 |
id |
ftbrockuniv:oai:dr.library.brocku.ca:10464/4128 |
---|---|
record_format |
openpolar |
spelling |
ftbrockuniv:oai:dr.library.brocku.ca:10464/4128 2023-07-16T03:52:42+02:00 Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula Arnold, Holly Department of Earth Sciences 2012-10-12T15:12:46Z http://hdl.handle.net/10464/4128 unknown Brock University http://hdl.handle.net/10464/4128 Glaciology - Antarctic Peninsula Sediments (Geology) Electronic Thesis or Dissertation 2012 ftbrockuniv 2023-06-27T22:08:12Z Sediments recovered from seven Last Glacial Maximum grounding lines sites, around the Antarctic Peninsula, were analyzed using micromorphology. This is the first evidence that grounding line sediments from around the Antarctic Peninsula have complex deformational histories and subglacial origins. It was determined that grounding zone wedge contain multiple units, or diamicton layers, with homogenized boundaries. The multiple diamicton units / layers are due to the accretionary formation of a grounding line wedge. All the sediments were deposited via deformation, and continual reincorporation, homogenization of lower diamicton layers by upper diamicton layers produced what macroscopically appeared to be a single massive diamicton unit. The morainal ridge that was sampled, alternatively, is composed of a single unit, or diamicton layer, that was subglacial in origin and believed to have been pushed out to form a ridge that was subsequently deformed via glacial push. Thesis Antarc* Antarctic Antarctic Peninsula Brock University Digital Repository Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Brock University Digital Repository |
op_collection_id |
ftbrockuniv |
language |
unknown |
topic |
Glaciology - Antarctic Peninsula Sediments (Geology) |
spellingShingle |
Glaciology - Antarctic Peninsula Sediments (Geology) Arnold, Holly Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
topic_facet |
Glaciology - Antarctic Peninsula Sediments (Geology) |
description |
Sediments recovered from seven Last Glacial Maximum grounding lines sites, around the Antarctic Peninsula, were analyzed using micromorphology. This is the first evidence that grounding line sediments from around the Antarctic Peninsula have complex deformational histories and subglacial origins. It was determined that grounding zone wedge contain multiple units, or diamicton layers, with homogenized boundaries. The multiple diamicton units / layers are due to the accretionary formation of a grounding line wedge. All the sediments were deposited via deformation, and continual reincorporation, homogenization of lower diamicton layers by upper diamicton layers produced what macroscopically appeared to be a single massive diamicton unit. The morainal ridge that was sampled, alternatively, is composed of a single unit, or diamicton layer, that was subglacial in origin and believed to have been pushed out to form a ridge that was subsequently deformed via glacial push. |
author2 |
Department of Earth Sciences |
format |
Thesis |
author |
Arnold, Holly |
author_facet |
Arnold, Holly |
author_sort |
Arnold, Holly |
title |
Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
title_short |
Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
title_full |
Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
title_fullStr |
Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
title_full_unstemmed |
Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula |
title_sort |
micromorphology of last glacial maximum grounding line sediments around the antarctic peninsula |
publisher |
Brock University |
publishDate |
2012 |
url |
http://hdl.handle.net/10464/4128 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
http://hdl.handle.net/10464/4128 |
_version_ |
1771546793699442688 |