26 km of offset on the Lake Clark fault since late Eocene time

Professional Paper 1709- A
By:  and 

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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.

Additional publication details

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
Edition -
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