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Appendix A—Progress report of the subcommittee on permeability
Walter B. Langbein
1944, Eos, Transactions, American Geophysical Union (25) 721-722
A variety of units and names of units relating to permeability have been used and are being used by different investigators. This Sub‐Committee was recently organized to provide an open forum for persons of different background and experience to present their views in an orderly manner. Thirteen members representing diverse...
Differences in basin‐characteristics as reflected by precipitation‐runoff relations in San Bernardino and Eastern San Gabriel Mountain drainages
H.M. Stafford, H.C. Troxell
1944, Eos, Transactions, American Geophysical Union (25) 21-35
In interpretation and use of basic hydrological data as basis for planning any public works for conservation or control of water, there is great need for a careful and thorough analysis of the precipitation‐runoff relations. Moreover, when such relations may have been worked out for one particular basin, experience has...
The differentiation of magnesite from dolomite in concentrates and tailings
George T. Faust
1944, Economic Geology (39) 142-151
A new method is presented here for differentiating magnesite from dolomite in crushed materials. This method is based on the essentially different temperatures at which these minerals undergo thermal decomposition. The resulting lowly birefringent periclase is easily distinguished microscopically from the highly birefringent dolomite. This method is based on the...
The fluorspar deposits of Saint Lawrence, Newfoundland
Ralph Erskine Van Alstine
1944, Economic Geology (39) 109-132
Fluorspar from Newfoundland, eighth ranking producer of the world, comes entirely from the St. Lawrence district. Here pre-Cambrian lavas and pyroclastics, Cambrian sedimentary rocks, Ordovician (?) volcanic and sedimentary rocks, and a Paleozoic alaskite-granite comprise the bedrock.Epithermal fluorite veins occupy steeply dipping fault fissures in granite, rhyolite porphyry, and lamprophyre....
"Ribbon rock", an unusual beryllium-bearing tactite
R. H. Jahns
1944, Economic Geology (39) 173-205
The beryllium deposits at Iron Mountain, near the northern end of the Sierra Cuchillo in Sierra and Socorro Counties, New Mexico, are unusual products of contact metamorphism. They occur in irregular bodies of tactile formed by replacement of Paleozoic limestone, generally at or near contacts with small intrusive masses of...
Celestite in Buffalo Cove, Fentress County, Tennessee
T. L. Kesler
1944, Economic Geology (39) 287-306
Mineral aggregates consisting of celestite, dolomite, calcite, and very small amounts of sphalerite, anhydrite, and pyrite occur in the uppermost beds of the Glen Dean limestone, of upper Mississippian age, which crops out along the slopes of Buffalo Cove. Proportions of minerals range widely in adjacent aggregates; maximum content of...
Halmahera (Molukkas): terrain intelligence
Water Resources Division, U.S. Geological Survey
1944, Strategic Engineering Study 103
This folio was rushed to completion on urgent request from the Strategic Intelligence Branch, Office of Chief of Engineers. The geologists, soils scientists, and ground-water hydrologists had completed their studies in manu- script form, but time was not available for editing the folio, coordinating its different parts, or checking it...