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Page 6117, results 152901 - 152925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
K-feldspar content of Jurassic and Cretaceous graywackes of northern Coast Ranges and Sacramento Valley, California
Edgar Herbert Bailey, William Porter Irwin
1959, American Association of Petroleum Geologists Bulletin (43) 2797-2809
Graywackes of Late Jurassic to Late Cretaceous age are the predominant rocks in the northern Coast Ranges and the western Sacramento Valley provinces in California. These graywackes are similar in appearance, but their content of K-feldspar, which can be readily estimated after selective...
Age of marginal Wisconsin drift at Corry, northwestern Pennsylvania
J.B. Droste, M. Rubin, G. W. White
1959, Science (130) 1760-1760
Marl began to accumulate about 14,000 years ago, as determined by radiocarbon dating, in a pond in a kettle hole in Kent drift at Corry, Pa., 9 miles inside the Wisconsin drift margin. This radiocarbon age represents the minimum time since the disappearance of the ice from Corry and confirms...
Peneconcordant uranium deposit: A proposed term
W.I. Finch
1959, Economic Geology (54) 944-946
The term peneconcordant is proposed to describe the form of the numerous and highly productive U deposits in sedimentary rocks of the Colorado Plateau, Wyoming, the Dakotas, and Texas. Peneconcordant U deposits are tabular, lenticular, or irregularly-shaped masses of widely differing size that are, in general, concordant to the gross...
Some aspects of the origin of the Ironwood iron-formation of Michigan and Wisconsin
N.K. Huber
1959, Economic Geology (54) 82-118
The Ironwood iron-formation of the Gogebic Range of Michigan and Wisconsin is made up of several rock types, each of which is characterized by a different iron-rich mineral: hematite, magnetite, pyrite, iron carbonate, or iron silicate (minnesotaite, stilpnomelane). Where the Ironwood iron-formation is relatively unaltered the Plymouth, Norrie, and Anvil...
Time-lapse motion picture technique applied to the study of geological processes
R. D. Miller, D. R. Crandell
1959, Science (130) 795-796
Light-weight, battery-operated timers were built and coupled to 16-mm motion-picture cameras having apertures controlled by photoelectric cells. The cameras were placed adjacent to Emmons Glacier on Mount Rainier. The film obtained confirms the view that exterior time-lapse photography can be applied to the study of slow-acting geologic processes....