Active and Potentially Active Faults Along the Alaska Highway Corridor, Tetlin Junction to the Canada Border
Dates
Year
2012
Citation
Koehler, Rich D., and Carver, Gary A., 2012, Active and Potentially Active Faults Along the Alaska Highway Corridor, Tetlin Junction to the Canada Border: STATE OF ALASKA DEPARTMENT OF NATURAL RESOURCES, Division of Geological & Geophysical Surveys: Fairbanks, Alaska, v. PRELIMINARY INTERPRETIVE REPORT 2012-2, p. 1-23.
Summary
Helicopter and field reconnaissance surveys to assess seismic hazards along the Alaska Highway corridor between Tetlin Junction and the Yukon (Canada) border were conducted by the Alaska Division of Geological & Geophysical Surveys. Faults previously identified as having "suggestive or suspicious" evidence of Quaternary deformation were evaluated, including the Dennison Fork, Caribou Creek, Midway Lake, Northway Junction, and Airs Hills faults, and the Tetlin Lake and Ladue River lineaments. The results indicate that all of the faults are characterized by mature to absent geomorphic expression, lack features indicative of Holocene and/or Quaternary deformation, and should not be considered active faults in future hazard assessments. [...]
Summary
Helicopter and field reconnaissance surveys to assess seismic hazards along the Alaska Highway corridor between Tetlin Junction and the Yukon (Canada) border were conducted by the Alaska Division of Geological & Geophysical Surveys. Faults previously identified as having "suggestive or suspicious" evidence of Quaternary deformation were evaluated, including the Dennison Fork, Caribou Creek, Midway Lake, Northway Junction, and Airs Hills faults, and the Tetlin Lake and Ladue River lineaments. The results indicate that all of the faults are characterized by mature to absent geomorphic expression, lack features indicative of Holocene and/or Quaternary deformation, and should not be considered active faults in future hazard assessments. We speculate that the locus of active deformation follows the southeast curvature of the Alaska Range and Denali fault and is concentrated south of the Alaska Highway. ABSTRACT FROM AUTHOR]; Copyright of Preliminary Interpretive Report Series is the property of Alaska Division of Geological & Geophysical Surveys and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)