Assessment of Potentially Active Faults in the Northwestern Livengood Quadrangle, Alaska

Download or read book Assessment of Potentially Active Faults in the Northwestern Livengood Quadrangle, Alaska written by Richard D. Koehler and published by . This book was released on 2020 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helicopter and ground reconnaissance surveys were conducted in the Yukon River area in the northwestern Livengood Quadrangle to assess the locations and relative activity of tectonic faults that could pose hazards to the Dalton Highway and proposed future infrastructure developments. Previously identified faults were evaluated, including the Victoria Creek fault (southern, middle, and northern strands), the Kaltag Extension fault, and the Tozitna fault. Several unnamed faults and the Hess Creek and Ray River lineaments were also investigated. The results indicate that none of the faults and lineaments investigated are expressed in Holocene deposits and none exhibit tectonic geomorphic features that indicate Quaternary deformation. High rates of geomorphic processes, low rates of tectonic deformation, and thick vegetative cover may inhibit the recognition of tectonic geomorphology. Future investigations using high-resolution topographic datasets would provide an opportunity to validate the conclusions.