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Blocher - Thesis(final).pdf (10.93 MB)
ETD Abstract Container
Abstract Header
Fault Geometry and Kinematics within the Terror Rift, Antarctica
Author Info
Blocher, William Burke
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1510176632279205
Abstract Details
Year and Degree
2017, Master of Science, Ohio State University, Earth Sciences.
Abstract
The Terror Rift is the youngest expression of the intraplate West Antarctic Rift System that divides the Antarctic continent. Previous studies of the Terror Rift have ascribed a variety of interpretations to its structure, and especially to the regional anticline known as the Lee Arch, which has been explained as a transtensional flower structure, a rollover anticline, and as the result of magmatic inflation. Fault mapping and the documentation of stratal dips in this study have revealed a Terror Rift structure characterized by north-south folds and a complex distribution of faults. Nearly all faults have normal sense dip separation. A continuous zone of west-dipping faults with relatively high-magnitude normal separation are interpreted to be the border fault system defining the eastern margin of Terror Rift. Reconstruction of listric ramp-flat geometry of this border fault system explains intrarift fold and fault patterns well. Zonation of structures indicates that the listric rift detachment faults are segmented along the rift axis. This new model for rift structure indicates orthogonal rift extension in the ENE-WSW direction, with low strains of <10% calculated from bed-length balancing.
Committee
Terry Wilson (Advisor)
Thomas Darrah (Committee Member)
Derek Sawyer (Committee Member)
Pages
130 p.
Subject Headings
Earth
Keywords
Terror Rift
;
Antarctica
;
rift
;
tectonics
;
faulting
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Citations
Blocher, W. B. (2017).
Fault Geometry and Kinematics within the Terror Rift, Antarctica
[Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1510176632279205
APA Style (7th edition)
Blocher, William.
Fault Geometry and Kinematics within the Terror Rift, Antarctica.
2017. Ohio State University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1510176632279205.
MLA Style (8th edition)
Blocher, William. "Fault Geometry and Kinematics within the Terror Rift, Antarctica." Master's thesis, Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1510176632279205
Chicago Manual of Style (17th edition)
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Document number:
osu1510176632279205
Download Count:
648
Copyright Info
© 2017, some rights reserved.
Fault Geometry and Kinematics within the Terror Rift, Antarctica by William Burke Blocher is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by The Ohio State University and OhioLINK.