Tools
Tools
Alexander, J. 
ORCID: https://orcid.org/0000-0002-2830-2727 and Leeder, M. R.
(1990)
Geomorphology and surface tilting in an active extensional basin, SW Montana, USA.
Journal of the Geological Society, 147 (3).
pp. 461-467.
ISSN 2041-479X
Abstract
The valley and alluvial cone of the antecedent Madison River in the Missouri Flats area of SW Montana lie in a half-graben bounded by a prominent prehistoric fault scarp. Footwall-sourced alluvial fans and fans derived from a major transfer zone have prograded onto the oldest of a prominent suite of three paired terraces of Holocene age which bound the modern braided floodplain of the river. The terraces have been cut into the Pleistocene alluvial cone and are cut by the prehistoric fault scarp. Levelling studies on the terrace surfaces in the hangingwall reveal that movement on the fault has caused surface tilting, erosion and deposition. A suite of terraces present in the footwall of the fault shows backtihing consistent with footwall uplift having occurred.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Geosciences Faculty of Science > Research Groups > Geosciences and Natural Hazards (former - to 2017) |
| Depositing User: | Rosie Cullington |
| Date Deposited: | 05 Apr 2011 14:55 |
| Last Modified: | 16 Apr 2024 14:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/28081 |
| DOI: | 10.1144/gsjgs.147.3.0461 |
Actions (login required)
 |
View Item |