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Page 4595, results 114851 - 114875

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Engineering geology studies in the National Petroleum Reserve, Alaska
Reuben Kachadoorian, F.E. Crory
1984, Open-File Report 83-6
Engineering geology studies were conducted in direct support of the exploration program in the National Petroleum Reserve, Alaska. The studies included laboratory and field tests and observations to address design and construction problems of airfields, roads, drill pads and foundations, and to evaluate their actual performance. Permafrost containing large amounts...
Reconnaissance geology of the Al'Awshaziyah Quadrangle, sheet 26/41 B, Kingdom of Saudi Arabia
G. W. Leo
1984, Open-File Report 84-497
The Al 'Awshaziyah quadrangle (26/41 B) is located between lat 26°30' and 27°00 f N. and long 41°30' and 42°00' E. in the northeastern part of the Arabian Shield. The quadrangle contains surficial Quaternary deposits and locally exposed underlying upper Proterozoic intrusive, volcanic, and volcaniclastic rocks. The oldest rocks, gabbro and...
Geochronometric and lead isotope data on samples from the Wallace 1 degree by 2 degrees Quadrangle, Montana and Idaho
R. F. Marvin, R. E. Zartman, J. D. Obradovich, J. E. Harrison
1984, Miscellaneous Field Studies Map 1354-G
Most of the bedrock in the Wallace quadrangle belongs to the Belt Supergroup, a thick (about 18,000 m) sequence of generally fine-grained clastic and carbonate rocks of Middle Proterozoic age.  Regional metamorphism prior to Cambrian time prograded the Belt rocks to greenschist facies, and some metal-bearing veins were emplaced in...