Moho and basement configuration beneath McMurdo Sound
Bibliography: pages 45-50. Results of several reversed refraction profiles and a gravity profile were used in the crustal modelling beneath McMurdo Sound. A depth to the Moho surface of 21 km was calculated from a 195.7 km refraction profile shot subparallel to the strike of the Transantarctic Mount...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Thesis |
Language: | English |
Published: |
Northern Illinois University
1983
|
Subjects: | |
Online Access: | https://commons.lib.niu.edu/handle/10843/18334 |
id |
ftnorthillinuni:oai:commons.lib.niu.edu:10843/18334 |
---|---|
record_format |
openpolar |
spelling |
ftnorthillinuni:oai:commons.lib.niu.edu:10843/18334 2023-05-15T13:34:51+02:00 Moho and basement configuration beneath McMurdo Sound Erickson, Joseph M. McGinnis, Lyle David Department of Geology 1983 viii, 197 pages application/pdf https://commons.lib.niu.edu/handle/10843/18334 eng eng Northern Illinois University https://commons.lib.niu.edu/handle/10843/18334 NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors. Geology--Antarctica--McMurdo Sound Text Dissertation/Thesis 1983 ftnorthillinuni 2020-09-22T08:43:10Z Bibliography: pages 45-50. Results of several reversed refraction profiles and a gravity profile were used in the crustal modelling beneath McMurdo Sound. A depth to the Moho surface of 21 km was calculated from a 195.7 km refraction profile shot subparallel to the strike of the Transantarctic Mountains. Gravity modelling shows the subducted Moho surface to descend beneath the Transantarctic Mountains. Refraction data were used to construct a basement structure map, isopach maps of various sedimentary layers, and two geologic profiles. Trough-like depressions in the basement surface and overlying sediment layer surfaces are found to extend from the major valleys of the Dry Valley system, suggesting similar origins. Formation of these linear depressions were probably the result of block faulting and/or glacial scour. Thickening of the sedimentary layer*s overlying layer surface depressions may indicate the formation of these depressions before the infilling of sediments. M.S. (Master of Science) Thesis Antarc* Antarctica McMurdo Sound Northern Illinois University (NIU): Huskie Commons Repository McMurdo Sound Transantarctic Mountains |
institution |
Open Polar |
collection |
Northern Illinois University (NIU): Huskie Commons Repository |
op_collection_id |
ftnorthillinuni |
language |
English |
topic |
Geology--Antarctica--McMurdo Sound |
spellingShingle |
Geology--Antarctica--McMurdo Sound Erickson, Joseph M. Moho and basement configuration beneath McMurdo Sound |
topic_facet |
Geology--Antarctica--McMurdo Sound |
description |
Bibliography: pages 45-50. Results of several reversed refraction profiles and a gravity profile were used in the crustal modelling beneath McMurdo Sound. A depth to the Moho surface of 21 km was calculated from a 195.7 km refraction profile shot subparallel to the strike of the Transantarctic Mountains. Gravity modelling shows the subducted Moho surface to descend beneath the Transantarctic Mountains. Refraction data were used to construct a basement structure map, isopach maps of various sedimentary layers, and two geologic profiles. Trough-like depressions in the basement surface and overlying sediment layer surfaces are found to extend from the major valleys of the Dry Valley system, suggesting similar origins. Formation of these linear depressions were probably the result of block faulting and/or glacial scour. Thickening of the sedimentary layer*s overlying layer surface depressions may indicate the formation of these depressions before the infilling of sediments. M.S. (Master of Science) |
author2 |
McGinnis, Lyle David Department of Geology |
format |
Thesis |
author |
Erickson, Joseph M. |
author_facet |
Erickson, Joseph M. |
author_sort |
Erickson, Joseph M. |
title |
Moho and basement configuration beneath McMurdo Sound |
title_short |
Moho and basement configuration beneath McMurdo Sound |
title_full |
Moho and basement configuration beneath McMurdo Sound |
title_fullStr |
Moho and basement configuration beneath McMurdo Sound |
title_full_unstemmed |
Moho and basement configuration beneath McMurdo Sound |
title_sort |
moho and basement configuration beneath mcmurdo sound |
publisher |
Northern Illinois University |
publishDate |
1983 |
url |
https://commons.lib.niu.edu/handle/10843/18334 |
geographic |
McMurdo Sound Transantarctic Mountains |
geographic_facet |
McMurdo Sound Transantarctic Mountains |
genre |
Antarc* Antarctica McMurdo Sound |
genre_facet |
Antarc* Antarctica McMurdo Sound |
op_relation |
https://commons.lib.niu.edu/handle/10843/18334 |
op_rights |
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors. |
_version_ |
1766058535562510336 |