Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska
Dates
Publication Date
2008-11
Start Date
2006
End Date
2007
File Modification Date
2014-05-22 11:36:00
Citation
Carver, G.A, Bemis, S.P., Solie, D.N., and Obermiller, K.E., 200811, Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.
Summary
During the 2006 and 2007 field seasons, geologic features indicative of possible youthful surface faulting in or near the Alaska Highway corridor between Delta Junction and Dot Lake were identified by helicopter and fixed-wing air reconnaissance, augmented by interpretation of stereo air photos, remotely sensed images, and aeromagnetic and electromagnetic (EM) datanction to the eastern boundary of the Mt. Hayes Quadrangle. The largest of these faults is the previously unrecognized Dot "T" Johnson fault, a major west-trending, south-dipping thrust fault bordering the northern margin of the Alaska Range along the south side of the Tanana River valley. Two other faults identified as active in this study, the Canteen and Granite Mountain-Panoramic [...]
Summary
During the 2006 and 2007 field seasons, geologic features indicative of possible youthful surface faulting in or near the Alaska Highway corridor between Delta Junction and Dot Lake were identified by helicopter and fixed-wing air reconnaissance, augmented by interpretation of stereo air photos, remotely sensed images, and aeromagnetic and electromagnetic (EM) datanction to the eastern boundary of the Mt. Hayes Quadrangle. The largest of these faults is the previously unrecognized Dot "T" Johnson fault, a major west-trending, south-dipping thrust fault bordering the northern margin of the Alaska Range along the south side of the Tanana River valley. Two other faults identified as active in this study, the Canteen and Granite Mountain-Panoramic faults, are northeast-trending, left-lateral, strike-slip faults that connect segments of the Dot "T" Johnson thrust system, where they are separated by large left steps. The Billy Creek fault is a northeast-trending, left-lateral, strike-slip fault in the Yukon-Tanana Upland north of the Tanana River valley.
This report is a part of ADGGS'sAlaska Natural Gas Pipeline Geology and Geohazards project. The study was done in anticipation of the proposed natural gas pipeline along the Alaska Highway corridor. Recognition of potentially active faults is an important factor in design engineering of infrastructure.
