Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica
The purpose of this thesis is to find a new method for dating raised-beach deposits in order to create more accurate sea-level curves for the Antarctic Peninsula. We test the use of optically stimulated luminescence (OSL) in dating cobbles from raised beaches within the South Shetland Islands of the...
Main Author: | |
---|---|
Other Authors: | , , |
Format: | Thesis |
Language: | English |
Published: |
Oklahoma State University
2008
|
Subjects: | |
Online Access: | http://hdl.handle.net/11244/8033 |
id |
ftoklahomaunivs:oai:shareok.org:11244/8033 |
---|---|
record_format |
openpolar |
spelling |
ftoklahomaunivs:oai:shareok.org:11244/8033 2023-05-15T14:03:39+02:00 Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica Kouremenos, Procopios Simms, Alex DeWitt, Regina Puckette, James 2008-12-01 application/pdf http://hdl.handle.net/11244/8033 en_US eng Oklahoma State University http://hdl.handle.net/11244/8033 Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material. text Thesis 2008 ftoklahomaunivs 2023-01-25T21:21:10Z The purpose of this thesis is to find a new method for dating raised-beach deposits in order to create more accurate sea-level curves for the Antarctic Peninsula. We test the use of optically stimulated luminescence (OSL) in dating cobbles from raised beaches within the South Shetland Islands of the Antarctic Peninsula. OSL is commonly used for sediment, but the application to rocks is in its infancy. Methods were developed to isolate quartz grains from the cobbles for OSL measurement. Of the 12 samples I attempted to obtain age dates from, 8 contained enough material for OSL analysis. The OSL ages are in agreement with calibrated radiocarbon ages from the same deposits. In addition, the OSL ages are all internally consistent in that ages obtained from higher ridges are always older than lower ridges and ages obtained from the same ridges overlap one another. My results also clearly illustrate a change in rebound rates within the South Shetland Islands roughly coincident with recent glacier expansion recorded by the mapping and dating of moraines. Because of the large radiocarbon reservoir in Antarctica, OSL is shown to be a more precise method for dating raised beaches than radiocarbon techniques. Boone Pickens School of Geology Thesis Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands University of Oklahoma/Oklahoma State University: SHAREOK Repository Antarctic Antarctic Peninsula King George Island Raised Beach ENVELOPE(163.783,163.783,-74.983,-74.983) South Shetland Islands The Antarctic |
institution |
Open Polar |
collection |
University of Oklahoma/Oklahoma State University: SHAREOK Repository |
op_collection_id |
ftoklahomaunivs |
language |
English |
description |
The purpose of this thesis is to find a new method for dating raised-beach deposits in order to create more accurate sea-level curves for the Antarctic Peninsula. We test the use of optically stimulated luminescence (OSL) in dating cobbles from raised beaches within the South Shetland Islands of the Antarctic Peninsula. OSL is commonly used for sediment, but the application to rocks is in its infancy. Methods were developed to isolate quartz grains from the cobbles for OSL measurement. Of the 12 samples I attempted to obtain age dates from, 8 contained enough material for OSL analysis. The OSL ages are in agreement with calibrated radiocarbon ages from the same deposits. In addition, the OSL ages are all internally consistent in that ages obtained from higher ridges are always older than lower ridges and ages obtained from the same ridges overlap one another. My results also clearly illustrate a change in rebound rates within the South Shetland Islands roughly coincident with recent glacier expansion recorded by the mapping and dating of moraines. Because of the large radiocarbon reservoir in Antarctica, OSL is shown to be a more precise method for dating raised beaches than radiocarbon techniques. Boone Pickens School of Geology |
author2 |
Simms, Alex DeWitt, Regina Puckette, James |
format |
Thesis |
author |
Kouremenos, Procopios |
spellingShingle |
Kouremenos, Procopios Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
author_facet |
Kouremenos, Procopios |
author_sort |
Kouremenos, Procopios |
title |
Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
title_short |
Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
title_full |
Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
title_fullStr |
Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
title_full_unstemmed |
Testing the Use of OSL on Cobbles From the Raised Beaches of King George Island, Antarctica |
title_sort |
testing the use of osl on cobbles from the raised beaches of king george island, antarctica |
publisher |
Oklahoma State University |
publishDate |
2008 |
url |
http://hdl.handle.net/11244/8033 |
long_lat |
ENVELOPE(163.783,163.783,-74.983,-74.983) |
geographic |
Antarctic Antarctic Peninsula King George Island Raised Beach South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula King George Island Raised Beach South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
op_relation |
http://hdl.handle.net/11244/8033 |
op_rights |
Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material. |
_version_ |
1766274425138708480 |