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.
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 |
| Google Analytic Metrics | Metrics page |