Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica
The Southern McMurdo Sound (SMS) project recovered 1138 m of mainly Neogene rock core from the Victoria Land Basin of Antarctica, which is located in the westernmost branch of the Ross Sea rift system. Approximately 1008 natural fractures occur in the core including faults, veins, brecciated zones a...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
The Ohio State University
2010
|
Subjects: | |
Online Access: | http://hdl.handle.net/1811/45572 |
id |
ftohiostateu:oai:kb.osu.edu:1811/45572 |
---|---|
record_format |
openpolar |
spelling |
ftohiostateu:oai:kb.osu.edu:1811/45572 2023-05-15T13:53:38+02:00 Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica Saddler, David Wilson, Terry 2010-06 application/pdf http://hdl.handle.net/1811/45572 en_US eng The Ohio State University The Ohio State University. School of Earth Sciences. Senior Theses; 2010 http://hdl.handle.net/1811/45572 AND-2A core Antarctica Thesis 2010 ftohiostateu 2020-08-22T19:11:10Z The Southern McMurdo Sound (SMS) project recovered 1138 m of mainly Neogene rock core from the Victoria Land Basin of Antarctica, which is located in the westernmost branch of the Ross Sea rift system. Approximately 1008 natural fractures occur in the core including faults, veins, brecciated zones and sedimentary intrusions. This study contributed to the process of orientation of the core, and structures within it, to in situ coordinates by completing digital ‘stitching’ of core into intact core intervals. The attitudes of oriented structures were plotted on graphical stereonets to identify any consistently oriented sets of faults, veins and sedimentary intrusions. Twenty-one core intervals were analyzed and preliminary results indicate the orientation of the fault sets changes with depth from a dominant northwest trend downward to a dominantly northeast orientation. Change in fault orientation occurs at a regional marker reflector at 922.38mbsf, dated to ~19Ma. The northeast fault orientation observed in the older sedimentary rocks of the SMS core has also been observed in the Cape Roberts core to the north and for mapped, onshore faults. This provides evidence for transtensional rifting along the Transantarctic Mountain Front rift boundary in the Oligocene and Early Miocene. Thesis Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land Ohio State University (OSU): Knowledge Bank Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) McMurdo Sound Ross Sea Victoria Land |
institution |
Open Polar |
collection |
Ohio State University (OSU): Knowledge Bank |
op_collection_id |
ftohiostateu |
language |
English |
topic |
AND-2A core Antarctica |
spellingShingle |
AND-2A core Antarctica Saddler, David Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
topic_facet |
AND-2A core Antarctica |
description |
The Southern McMurdo Sound (SMS) project recovered 1138 m of mainly Neogene rock core from the Victoria Land Basin of Antarctica, which is located in the westernmost branch of the Ross Sea rift system. Approximately 1008 natural fractures occur in the core including faults, veins, brecciated zones and sedimentary intrusions. This study contributed to the process of orientation of the core, and structures within it, to in situ coordinates by completing digital ‘stitching’ of core into intact core intervals. The attitudes of oriented structures were plotted on graphical stereonets to identify any consistently oriented sets of faults, veins and sedimentary intrusions. Twenty-one core intervals were analyzed and preliminary results indicate the orientation of the fault sets changes with depth from a dominant northwest trend downward to a dominantly northeast orientation. Change in fault orientation occurs at a regional marker reflector at 922.38mbsf, dated to ~19Ma. The northeast fault orientation observed in the older sedimentary rocks of the SMS core has also been observed in the Cape Roberts core to the north and for mapped, onshore faults. This provides evidence for transtensional rifting along the Transantarctic Mountain Front rift boundary in the Oligocene and Early Miocene. |
author2 |
Wilson, Terry |
format |
Thesis |
author |
Saddler, David |
author_facet |
Saddler, David |
author_sort |
Saddler, David |
title |
Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
title_short |
Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
title_full |
Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
title_fullStr |
Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
title_full_unstemmed |
Orientation and Kinematic History of Faults, Veins and Sedimentary Intrusions in the AND-2A Sedimentary Rock Core, Southern McMurdo Sound, Antarctica |
title_sort |
orientation and kinematic history of faults, veins and sedimentary intrusions in the and-2a sedimentary rock core, southern mcmurdo sound, antarctica |
publisher |
The Ohio State University |
publishDate |
2010 |
url |
http://hdl.handle.net/1811/45572 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Cape Roberts McMurdo Sound Ross Sea Victoria Land |
geographic_facet |
Cape Roberts McMurdo Sound Ross Sea Victoria Land |
genre |
Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land |
op_relation |
The Ohio State University. School of Earth Sciences. Senior Theses; 2010 http://hdl.handle.net/1811/45572 |
_version_ |
1766258904744853504 |