Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania, and Delaware
Nancy C. Pearre, Allen V. Heyl Jr.
1960, Bulletin 1082-K
The Piedmont Upland in Maryland, Pennsylvania, and Delaware is about 160 miles long and at the most 50 miles wide. Rocks that underlie the province are the Baltimore gneiss of Precambrian age and quartzite, gneiss, schist, marble, phyllite, and greenstone, which make up the Glenarm series of early Paleozoic (?)...
Geology and fluorspar deposits, Northgate district, Colorado
Thomas A. Steven
1960, Bulletin 1082-F
The fluorspar deposits in the Northgate district, Jackson County, Colo., are among the largest in Western United States. The mines were operated intermittently during the 1920's and again during World War II, but production during these early periods of operation was not large. Mining was begun on a larger scale...
The Mesaverde group at Sunnyside, Utah
Harold Brodsky
1960, Open-File Report 60-18
The Mesaverde group of Late Cretaceous age at Sunnyside, Utah consists in ascending order; the Blackhawk formation, Castlegate sandstone and the Price River formation. The Mancos shale inter-tongues with the Blackhawk formation.The Mancos shale formed in an offshore marine environment, the Blackhawk formation formed in a mixed marine and continental...
Occurrence of strontium in natural water
M. W. Skougstad, C. Albert Horr
1960, Circular 420
The regions where the stable strontium content of surface waters is relatively low (less than 0.50 ppm) include the Pacific Northwest, Northeastern United States, and the Central Lowlands, Particularly the Lower Mississippi basin and the Western Gulf Coast area. Moderate concentrations of strontium (0.50 to 1.5 ppm) are found in...
Geology and ground-water resources of Platte County, Wyoming, with a section on Chemical quality of the water
D. A. Morris, H. M. Babcock, R.H. Langford
1960, Water Supply Paper 1490
Platte County, Wyo., has an area of 2,114 square miles and, in 1950, had a population of 7,925; it lies within parts of two major physiographic provinces, the northern extension of the Southern Rocky Mountains and the northwestern part of the Great Plains. The Laramie Range and related structures lie...
Double-mass curves, with a section fitting curves to cyclic data
James K. Searcy, Clayton H. Hardison, Walter B. Langbein
1960, Water Supply Paper 1541-B
The double.-mass curve is used to check the consistency of many kinds of hydrologic data by comparing data for a single station with that of a pattern composed of the data from several other stations in the area The double-mass curve can be used to adjust inconsistent precipitation data. The...
Model of study of infiltration into layered materials
W.N. Palmquist Jr., A.I. Johnson
1960, Open-File Report 60-108
Origin and chemical composition of evaporite deposits
George William Moore
1960, Open-File Report 60-99
A comparative study of marine evaporite deposits forming at the present time along the pacific coast of central Mexico and evaporite formations of Permian age in West Texas Basin was made in order to determine if the modern sediments provide a basis for understanding environmental conditions that existed during deposition...
Strategic graphite, a survey
Eugene N. Cameron, Paul L. Weis
1960, Bulletin 1082-E
Strategic graphite consists of certain grades of lump and flake graphite for which the United States is largely or entirely dependent on sources abroad. Lump graphite of high purity, necessary in the manufacture of carbon brushes, is imported from Ceylon, where it occurs in vein deposits. Flake graphite, obtained from...
Marine geology and bathymetry of nearshore shelf of Chukchi Sea, Ogotoruk Creek area, northwest Alaska
D.W. Scholl, C.L. Sainsbury
1960, Open-File Report 60-123
During July and August 1958 the U.S. Geological Survey conducted a study in behalf of the Atomic Energy Commission of the oceanography, bathymetry, and marine geology of the nearshore shelf of the Chukchi Sea off the Ogotoruk Creek area, northwest Alaska. Ogotoruk Creek enters the Chukchi Sea about 32 miles...
Mode of flow of Saskatchewan Glacier, Alberta, Canada
Mark Frederick Meier
1960, Professional Paper 351
A comprehensive system of automatic computation in magnetic and gravity interpretation
R.G. Henderson
1960, Geophysics (25) 569-585
In the interpretation of magnetic and gravity anomalies, downward continuation of fields and calculation of first and second vertical derivatives of fields have been recognized as effective means for bringing into focus the latent diagnostic features of the data. A comprehensive system has been devised for the calculation of any or all of these...
Crystal structure refinement of reedmergnerite, the boron analog of albite
J. R. Clark, D.E. Appleman
1960, Science (132) 1837-1838
Ordering of boron in a feldspar crystallographic site T1(0) has been found in reedmergnerite, which has silicon-oxygen and sodium-oxygen distances comparable to those in isostructural low albite. If a simple ionic model is assumed, calculated bond strengths yield a considerable charge imbalance in reedmergnerite, an indication of the inadequacy of the...
Geological age of the Claypool site, northeastern Colorado
H.E. Malde
1960, American Antiquity (26) 215-222
Artifacts related to the Cody complex occur in medium-grained sand that is spread as a blanket eolian deposit a few feet thick in the Claypool site area, Washington County, Colorado. The artifact-bearing sand lacks noticeable dunal topography and lies unconformably on marl of Yarmouth age and on waterlaid coarse sand and fine...
The chief oxide-burgin area discoveries, East Tintic district, Utah; A case history
J.B. Bush, D.R. Cook, T. S. Lovering, H. T. Morris
1960, Economic Geology (55) 1116-1147
The Burgin shaft is in the Chief Oxide area of the E. Tintic district, Utah, and is about a mile E. of any previously known ore bodies; workings from it are currently developing a substantial amount of commercial Pb-Zn ore in several blind ore bodies...
Deposits of the manganese oxides
Richard G. Petersen
1960, Economic Geology (55) 1-55
One of the problems of the wartime program of studies of domestic manganese deposits concerned the identification of, and modes of origin of the manganese oxide minerals. Of the hundreds of specimens of the oxides collected in the United States, the minerals of about 250...
Ground-water hydrology and glacial geology of the Kalamazoo area, Michigan
Morris Deutsch, K.E. Vanlier, P.R. Giroux
1960, Progress Report 23
The Kalamazoo report area includes about 150 square miles of Kalamazoo County, Mich. The area is principally one of industry and commerce, although agriculture also is of considerable importance. It has a moderate and humid climate and lies within the Lake Michigan “snow belt”. Precipitation averages about 35 inches per...
Geology and ground-water resources of the island of Kauai, Hawaii
Gordon A. Macdonald, Dan A. Davis, Doak C. Cox
1960, Bulletin 13
Kauai is one of the oldest, and is structurally the most complicated, of the Hawaiian Islands. Like the others, it consists principally of a huge shield volcano, built up from the sea floor by many thousands of thin flows of basaltic lava. The volume of the Kauai shield was on...
Effect of crystal thickness and geometry on the alpha-particle resolution of CsI (Tl)
P. Martinez, F. E. Senftle
1960, Review of Scientific Instruments (31) 974-977
The resolution of CsI(Tl) for Po210 alpha particles has been measured as a function of crystal thickness. The best resolution of a ½‐in. diam cylindrical crystal was obtained for a thickness of 0.38 mm, and the effect of thickness on the resolution is discussed. Based on the proposed model, a conical crystal...
Determination of niobium in the parts per million range in rocks
F. S. Grimaldi
1960, Analytical Chemistry (32) 119-121
A modified niobium thiocyanate spectrophotometric procedure relatively insensitive to titanium interference is presented. Elements such as tungsten, molybdenum, vanadium, and rhenium, which seriously interfere in the spectrophotometric determination of niobium, are separated by simple sodium hydroxide fusion and leach; iron and magnesium are used as carriers for the niobium. Tolerance...
A field method of spectrographic analysis for use in geochemical exploration work
Uteana Oda, A.T. Myers, E.F. Cooley
1959, Open-File Report 59-91
The method to be described is a modification of an earlier method of semiquantitative procedure. Through its use 34 elements can be determined simultaneously in one sample, which may be a rock, soil, mineral, or an ore. For many of these elements concentration ranges from one to ten thousand parts...
Hydrologic budget of the Beaverdam Creek basin, Maryland
W. C. Rasmussen, Gordon E. Andreasen
1959, Water Supply Paper 1472
A hydrologic budget is a statement accounting for the water gains and losses for selected periods in an area. Weekly measurements of precipitation streamflow, surface-water storage, ground-water stage, and soil resistivity were made during a 2year period, April 1, 1950, to March 28, 1952, in the Beaverdam Creek basin, Wicomico...
Ground-water resources of the lower Niobrara River and Ponca Creek basins, Nebraska and South Dakota
Thomas G. Newport, Robert A. Krieger
1959, Water Supply Paper 1460-G
This report describes the area in north-central Nebraska and south-central South Dakota drained by Ponca Creek and by the Niobrara River below Valentine, Nebr. The Niobrara River and Ponca Creek are neighboring eastward flowing tributaries of the Missouri River. The Dakota sandstone of Cretaceous age is the oldest formation tapped...
Impact mechanics at Meteor Crater, Arizona
Eugene Merle Shoemaker
1959, Open-File Report 59-108
Meteor Crator is a bowl-shaped depression encompassed by a rim composed chiefly of debris stacked in layers of different composition. Original bedrock stratigraphy is preserved, inverted, in the debris. The debris rests on older disturbed strata, which are turned up at moderate to steep angles in the wall of the...
Geology and ground-water resources of the upper Lodgepole Creek drainage basin, Wyoming, with a section on chemical quality of the water
Louis Jay Bjorklund, R. A. Krieger, E. R. Jochens
1959, Water Supply Paper 1483
The principal sources of ground-water supply in the upper Lodgepole Creek drainage basin-the part of the basin west of the Wyoming-Nebraska State line-are the Brule formation of Oligocene age, the Arikaree formation of Miocene age, the Ogallala formation of Pliocene age, and the unconsolidated deposits of Quaternary age. The Brule...
