26 km of offset on the Lake Clark fault since late Eocene time
Professional Paper
1709-A
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Abstract
Aeromagnetic data over the Lake Clark Fault reveal a north-trending band of magnetic anomalies that are right-laterally offset about 26 km across the fault. The magnetic anomalies correlate spatially with a belt of dated 34-39-Ma granitic plutons. Thus, the Lake Clark Fault has had ~26 km of right-lateral offset in the past 34-39 Ma. The Castle Mountain Fault, which lies along the strike of the Lake Clark Fault to the east-northeast, must have had a similar or, possibly, greater amount of offset. We infer the presence of an additional right-lateral strike-slip fault about 35 km northwest of the Lake Clark Fault, herein named the 'Telequana Fault,' on the basis of 11 km of right-lateral offset of a north-trending band of magnetic anomalies.
Suggested Citation
Haeussler, P.J., and Saltus, R.W., 2005, 26 km of offset on the Lake Clark fault since late Eocene time: U.S. Geological Survey Professional Paper 1709, 4 p., https://doi.org/10.3133/pp1709A.
ISSN: 2330-7102 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | 26 km of offset on the Lake Clark fault since late Eocene time |
| Series title | Professional Paper |
| Series number | 1709 |
| Chapter | A |
| DOI | 10.3133/pp1709A |
| Year Published | 2005 |
| Language | ENGLISH |
| Description | 4 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Studies by the U.S. Geological Survey in Alaska, 2004 |
| Online Only (Y/N) | Y |