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Page 5663, results 141551 - 141575

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Geological and geophysical investigations of an Apollo 9 photo anomaly near Point of Pines, Arizona
Calvin S. Bromfield, G. P. Eaton, D. L. Peterson, J.C. Ratte
1972, Open-File Report 72-51
An infrared photograph of southeastern Arizona, taken during the Apollo 9 multispectral terrain photography experiment in 1969, reveals a ringlike feature, some 3-4 miles (5-6 kin) in diameter, on the Natanes Plateau, 35 miles (56 kin) north of the town of Safford. Because the feature occurs in an area of...
Placer deposits of Alaska
Edward Huntington Cobb
1972, Open-File Report 72-71
Placer deposits, in addition to their intrinsic value, serve as indicators of areas of potential development of lode deposits. Any possibility that Alaska may again become an important source of metallic mineral commodities depends in part on an inventory of placer deposits and a knowledge of the geology of their...
Accelerations near faults that have moved during moderate-sized earthquakes
David M. Boore, Robert A. Page
1972, Open-File Report 72-43
Peak ground accelerations recently recorded within 10-15 km of faulting during moderate-sized earthquakes (m = 4 to 6) are significantly underestimated by many, if not most, of the empirical acceleration-distance relations commonly used in seismic engineering. The recent data show a rapid decrease of peak acceleration with increasing distances (at...
Iron prospect near Kayalar, Balikesir Province, western Turkey
Gerhard W. Leo
1972, Open-File Report 72-231
In July 1968 a brief reconnaissance was made of an area about 3 km northeast of Kayalar village, Balikesir Province (1:25,000 topographic sheet 119-a3), as part of the cooperative geologic program being undertaken by the Mineral Exploration and Research Institute of Turkey (MTA) and the U. S. Geological Survey (USGS)...
Progress report: Apollo 16 sample documentation
Water Resources Division, U.S. Geological Survey
1972, Open-File Report 72-397
This report is intended as a working document for use during the opening of the Apollo 16 sample containers and during the early phases of examination of the samples in the Lunar Receiving Laboratory (LRL). The information in this report was drawn from voice transcripts of the astronaut crew while...
Status of flood-plain mapping, greater Pittsburgh region, Pennsylvania, 1972
R.M. Beall, A.C. Lardieri
1972, Open-File Report 72-30
Flood plains that have a history of inundation or have a reasonable probability of being flooded, of course, need adequate attention in land-use planning, management, and development programs. Flood-plain maps and flood-plain-information reports are means of identifying these critical areas for special consideration....