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Page 5657, results 141401 - 141425

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Not all publications have extents, not all extents are completely accurate
The status of mineral resource information on the major land withdrawals of the Alaska Native Claims Settlement Act of 1971
Alaskan Geology Branch
1972, Open-File Report 72-394
This report is an analysis of the adequacy of the present level of geologic knowledge for making mineral resource potential evaluations of 126 federal land withdrawals made under the Alaska Native Claims Settlement Act. The withdrawals considered are Native village and regional deficiency areas (Sec. 11.A.3, ANCSA), classification and national...
Heavy-minerals reconnaissance in the Fatimah Formation, near Jiddah, Saudi Arabia
Louis Gonzalez
1972, Open-File Report 72-135
Near Jiddah, Saudi Arabia, a heavy-minerals survey was made in the Precambrian sediments o# the Fatima Formation. Samples measuring 0.25 cubic meters were taken in a net related to the drainage system and. washed in a sluice. The concentrates were tested. for 29 elements which included precious and. base metals,...
Mercury distribution in ancient and modern sediment of northeastern Bering Sea
C. Hans Nelson, D.E. Pierce, Kam Leong, F.F. Wang
1972, Open-File Report 72-268
A reconnaissance of surface and subsurface sediments to a maximum depth of 244 feet below the sea floor shows that natural mercury anomalies from 0.2 to 1.3 ppm have been present in northeastern Bering Sea since early Pliocene. The anomalies and mean values are highest in modern beach (maximum 1.3...
Geology and mineral deposits of the Jabal ash Shumta quadrangle, Kingdom of Saudi Arabia
C. L. Hummel, Abdullah O. Ankary
1972, Open-File Report 72-177
Rocks, structures, and mineral deposits which are the result of both the older Halaban petro-tectonic cycle and the younker Najd Wrench Fault deformation are present in the Ash Shumta area. Northward-trending belts of granitic rocks and folded, layered metavolcanic and metasedimentary rocks of the Halaban Formation which they intrude represent...
Geology and mineral deposits of the Wadi an Nuqumi quadrangle, Kingdom of Saudi Arabia
C. L. Hummel
1972, Open-File Report 72-176
The rocks, structures, and mineral deposits of the Wadi an Nuqumi quadrangle were formed during three periods of deformation, two of Precambrian age and one of Tertiary and Recent age. The older Precambrian Halaban cycle produced the thick eugeosynclinal suite of interlayered metasedimentary and metavolcanic rocks comprising the Halaban Formation,...
Reconnaissance geology of the Sabkhat Muraysis quadrangle, Kingdom of Saudi Arabia
William C. Overstreet, Jesse William Whitlow, Abdullah O. Ankayr
1972, Open-File Report 72-282
The Sabkhat Muraysis quadrangle .covers an area of 2843 sq km in the central part of the Kingdom of Saudi Arabia. In the northwestern quarter of the area Precambrian rocks are exposed. They are overlain toward the .south and east by sedimentary formations of Permian and younger age. Four main...