Review of the origin of the Braid Scarp near the Pebble prospect, southwestern Alaska
Open-File Report
2011-1028
Links
- More information: USGS Index Page (html)
- NGMDB Index Page: National Geologic Map Database Index Page (html)
- Download citation as: RIS | Dublin Core
Abstract
A linear geomorphic scarp, referred to as the 'Braid Scarp,' lies about 5 kilometers north of Iliamna Lake, Alaska, and has been identified as a possible seismically active fault. We examined the geomorphology of the area and an 8.5-meter-long excavation across the scarp. We conclude that the scarp was formed by incision of a glacial outwash braid plain into a slightly older outwash plain as ice stagnated in the region during deglaciation 11-15 thousand years ago. We found no evidence for active faulting along the scarp.
Suggested Citation
Haeussler, P.J., Waythomas, C.F., 2011, Review of the origin of the Braid Scarp near the Pebble prospect, southwestern Alaska: U.S. Geological Survey Open-File Report 2011-1028, iii, 14 p., https://doi.org/10.3133/ofr20111028.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Review of the origin of the Braid Scarp near the Pebble prospect, southwestern Alaska |
| Series title | Open-File Report |
| Series number | 2011-1028 |
| DOI | 10.3133/ofr20111028 |
| Year Published | 2011 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Alaska Science Center |
| Description | iii, 14 p. |
| Country | United States |
| State | Alaska |
| Other Geospatial | Braid Scarp, Pebble Prospect |
| Additional Online Files (Y/N) | N |