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Seismic refraction and gravity surveys of Pilgrim Springs KGRA, Alaska

Conference · · Trans. - Geotherm. Resour. Counc.; (United States)
OSTI ID:6375136
Pilgrim Springs KGRA is located in a major northeast-trending tectonic depression on the Seward Peninsula, Alaska. Refraction has identified a layer which coincides with a hot artesian aquifer in hydrothermally cemented sediments. The presence of a hydrothermal cap rock is possible but not proven. Crystalline bedrock lies at least 200 m beneath the springs, dropping to possibly 500 m in depth immediately to the southwest in what appears to be a trough bounded by normal faults on the north, south and east. Pilgrim Springs are situated over the intersection of the two faults at the northeastern corner of this trough, suggesting that one or both faults are acting as conduits to the springs. Pilgrim Springs are associated with extensional tectonics and recent alkalic volcanism suggestive of active rifting in the region.
Research Organization:
Univ. of Alaska, Fairbanks
DOE Contract Number:
FC07-79ET27034
OSTI ID:
6375136
Report Number(s):
CONF-800920-
Conference Information:
Journal Name: Trans. - Geotherm. Resour. Counc.; (United States) Journal Volume: 4
Country of Publication:
United States
Language:
English