Phosphate Rock Near Maxville, Philipsburg, and Avon, Montana (open access)

Phosphate Rock Near Maxville, Philipsburg, and Avon, Montana

From abstract: This paper gives the results of a resurvey of certain areas in Montana to which renewed interest has been directed by the development recently of a market for crude phosphate rock in British Columbia, nearby.
Date: 1936
Creator: Pardee, J. T.
System: The UNT Digital Library
Geology of the southern Guadalupe Mountains, Texas (open access)

Geology of the southern Guadalupe Mountains, Texas

From Abstract: "This report deals with an area of 425 square miles in the western part of Texas, immediately south of the New Mexico line. The report describes the geology of the area, that is, the nature of its rocks, tectonics, and surface features, and the evidence that they give as to the evolution of the area through geologic time. Incidental reference is made to the geology of surrounding regions in order to place the area in its environment."
Date: 1948
Creator: King, Philip B.
System: The UNT Digital Library
Magnesite Deposits of Central Ceará, Brazil (open access)

Magnesite Deposits of Central Ceará, Brazil

From introduction: The purpose of this study was to investigate the quantity and quality of [Central Ceara, Brazil] magnesite, and the writer concludes that this group of deposits constitutes one of the major reserves of high-grade magnesite in the Western Hemisphere. The ore could be used in the production of any commercial grade of magnesia with little or no beneficiation. Soil and alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open pits.
Date: 1950
Creator: Bodenlos, Alfred J.
System: The UNT Digital Library
Geologic Investigations of Radioactive Deposits Semiannual Progress Report (open access)

Geologic Investigations of Radioactive Deposits Semiannual Progress Report

This report is a statement of progress during a six-months period and gives the principal unclassified information developed in that period about investigations of radioactive materials in the United States and Alaska, and to a minor extent in foreign countries.
Date: June 1954
Creator: Geological Survey (U.S.)
System: The UNT Digital Library
The Copper and Uranium Deposits of the Coyote District, Mora County, New Mexico (open access)

The Copper and Uranium Deposits of the Coyote District, Mora County, New Mexico

From abstract: The copper and uranium-vanadium deposits of the Coyote district, Mora County, N. Mex., are confined to the lower 2,000 feet of the Sangre de Cristo formation of Pennsylvanian and Permian age. A narrow belt of deposits in steeply dipping or overturned rocks extends for 7 miles along Coyote Creek south of Guadalupita. Earlier studies showed that the copper deposits contained uranium, but both the reserves and the uranium content of the copper-bearing shale are too low to permit the recovery of uranium. However, small, commercial grade uranium deposits have been discovered in sandstone.
Date: December 1954
Creator: Tschanz, Charles M.; Laub, D. C. & Fuller, G. W.
System: The UNT Digital Library
Geology of the Murray Area, Shoshone County, Idaho (open access)

Geology of the Murray Area, Shoshone County, Idaho

Abstract: The Murray area includes almost the whole drainage basins of Prichard, Eagle, and Beaver Creeks and is underlain by the pre-Cambrian Belt series which is subdivided, from oldest to youngest, as follows: Prichard formation (upper and lower parts), Burke formation, Revett quartzite, St. Regis formation, Wallace formation, and Striped Peak formation. The Belt series in this area is cut by many small monzonite stocks believed to be related to the Cretaceous Idaho batholith. This report describes only the lead-zinc mines. The lead-zinc production around Murray reached its peak in 1911 and 1912 when the Monarch, Edith Murray (Pontiac or Terrible Edith), Bear Top, Paragon, Black Horse, and Silver Strike mines were active. Many of these mines have produced ore intermittently since then, and the Jack Waite mine has been very active since about 1930.
Date: 1956
Creator: Hosterman, John W.
System: The UNT Digital Library
Reconnaissance Geology of Western Mineral County, Montana (open access)

Reconnaissance Geology of Western Mineral County, Montana

From introduction: This reconnaissance study was undertaken to determine the major geologic features of the western part of Mineral County, Mont., principally in the drainage basin of the St. Regis River.
Date: 1956
Creator: Wallace, Robert E. & Hosterman, John W.
System: The UNT Digital Library
Uranium Deposits in the Dripping Spring Quartzite, Gila County, Arizona (open access)

Uranium Deposits in the Dripping Spring Quartzite, Gila County, Arizona

From abstract: This paper is primarily a progress report on studies designed to accumulate geologic data that will aid in our understanding of the localization and the genesis of uranium deposits in the Dripping Springs quartzite.
Date: May 1956
Creator: Granger, Harry C. & Raup, Robert B.
System: The UNT Digital Library
Geology of the Clark Fork Quadrangle Idaho-Montana (open access)

Geology of the Clark Fork Quadrangle Idaho-Montana

This report gives a brief geological description of the Clark Fork quadrangle on the Idaho-Montana border.
Date: 1963
Creator: Harrison, Jack Edward & Jobin, Daniel A.
System: The UNT Digital Library
Geology of the Guadalupe Mountains, New Mexico (open access)

Geology of the Guadalupe Mountains, New Mexico

From introduction: The present investigation is an attempt, by means of detailed areal mapping, to resolve the relations of the shelf-rock units to one another and to the reef and basin rocks and to clarify the confusing stratigraphic nomenclature.
Date: 1964
Creator: Hayes, Philip Thayer
System: The UNT Digital Library
Mineralogy and Geochemistry of Some Belt Rocks, Montana and Idaho (open access)

Mineralogy and Geochemistry of Some Belt Rocks, Montana and Idaho

A report which compares 20,000 feet of Belt rocks in the Mission Mountains Primitive Area in Montana with 40,000 feet of Belt rocks in the Pend Oreille area in Idaho and Montana.
Date: 1970
Creator: Harrison, J. E. & Grimes, D. J.
System: The UNT Digital Library
Proposed Cross-Florida Barge Canal: Water Quality Aspects with a Section on Waste-Assimilative Capacity (open access)

Proposed Cross-Florida Barge Canal: Water Quality Aspects with a Section on Waste-Assimilative Capacity

Abstract: The route of the partly completed Cross-Florida Barge Canal follows the St. Johns, Oklawaha and Withlacoochee Rivers. If the canal is ·completed, the Summit Reach, connecting the Oklawaha and Withlacoochee Rivers will be excavated into the Floridan aquifer. Large springs that discharge from this limestone and dolomite aquifer flow to the Oklawaha and Withlacoochee Rivers.
Date: February 1976
Creator: Lamonds, A. G.
System: The UNT Digital Library
Nitrogen and Phosphorus Uptake in the Everglades Conservation Areas, Florida, with Special Reference to the Effects of Back-pumping Runoff (open access)

Nitrogen and Phosphorus Uptake in the Everglades Conservation Areas, Florida, with Special Reference to the Effects of Back-pumping Runoff

From purposes and scope: The purposes of this investigation are to make a qualitative assessment of the effects on water quality of pumping water into the conservation areas, and specifically to evaluate the uptake by sediment and biota of nitrogen, phosphorus, and selected trace elements contained in the water.
Date: June 1976
Creator: McPherson, B. F.; Waller, B. G. & Mattraw, H. C.
System: The UNT Digital Library
Preimpoundment Water Quality of Raystown Branch Juniata River and Six Tributary Streams, South-Central Pennsylvania (open access)

Preimpoundment Water Quality of Raystown Branch Juniata River and Six Tributary Streams, South-Central Pennsylvania

Abstract: The Raystown Branch Juniata River watershed, which is the main water source for Raystown Lake, is a 960-square-mile (2,490 square kilometers) drainage basin in south-central Pennsylvania. Preimpoundment water-quality data were collected on the Raystown Branch and six tributary streams in the basin. Specific conductance values varied inversely with water discharge. The pH values were extremely low only at the Shoup Run site. Dissolved oxygen concentrations observed at all sites indicated a relatively high oxygen saturation level throughout the year. Seasonal variations in nitrate-N and orthophosphate-P levels were measured at the main inflow station at Saxton, Pa. The highest concentrations of nitrate-N and orthophosphate-P occurred in the winter and spring months and the lowest concentrations were measured during the summer and fall. Bacteriological data indicated no excessive amounts of fecal matter present at the in-flows. Soil samples collected at four sites in the impoundment area were predominantly of the Barbour, Philo, and Basher series, which are considered to be highly fertile soils with silt-loam and sandy-loam textures. Morphological features of the lake basin and lo~ nutrient levels at the ·inflows should prevent excessive weed growth around the lake perimeter.
Date: June 1976
Creator: Williams, Donald R.
System: The UNT Digital Library
Limnological Survey of Sacony Creek Basin, Berks County, Pennsylvania (open access)

Limnological Survey of Sacony Creek Basin, Berks County, Pennsylvania

Samples of water, fish, and benthic macroinvertebrates collected at 10 sampling stations over a 10-month period indicate that Sacony Creek and its major tributaries possess water of good to excellent quality. No excessive quantities of dissolved nutrients, oxidizable matter, or fecal coliform bacteria were detected. Fish inhabitants include a sizable wild trout population in the upper Sacony basin and a diverse warm-water population, dominated by white suckers (Catostomus commersoni), in the lower basin. A population of 590 trout or 119 pounds per acre (133 kilograms per square hectometer) was estimated for good habitat in the upper basin. A maximum standing crop of 558 pounds per acre (626 kilograms per square hectometer) was measured at' one of the more productive reaches. Benthic macroinvertebrate collections tended to support the water chemistry and fish population studies. Diversity (d) and Redundancy (r) ranged from 2.44 to 3.46 and 0.14 to 0.38, respectively. Such diversity and redundancy values indicate good quality water at all stations.
Date: August 1976
Creator: Barker, James L. & Kulp, Kenneth P.
System: The UNT Digital Library
Ground-Water Quality Near a Sewage-Sludge Recycling Site and a Landfill Near Denver, Colorado (open access)

Ground-Water Quality Near a Sewage-Sludge Recycling Site and a Landfill Near Denver, Colorado

This report investigates the effects of the sewage-sludge recycling site and a landfill site on the ground-water system of Denver. It includes several maps.
Date: May 1977
Creator: Robson, S. G.
System: The UNT Digital Library
Water-Quality Study of Tulpehocken Creek, Berks County, Pennsylvania, Prior to Impoundment of Blue Marsh Lake (open access)

Water-Quality Study of Tulpehocken Creek, Berks County, Pennsylvania, Prior to Impoundment of Blue Marsh Lake

From introduction: This report is limited to the presentation and discussion of chemical, physical, and bacteriological data collected within Tulpehocken Creek basin before April 1975.
Date: September 1977
Creator: Barker, James L.
System: The UNT Digital Library
Hydrologic Appraisal of the Water Resources of the Homer-Preble Valley, New York (open access)

Hydrologic Appraisal of the Water Resources of the Homer-Preble Valley, New York

This report appraises water resources in Homer-Preble valley in central New York and judges that despite an expected rise in residential development, the glacial-outwash aquifer can still operate as the site's main source of water without seriously reduce water quality or quantity. It contains maps, graphs, and tables.
Date: 1978
Creator: Buller, William
System: The UNT Digital Library
Quality and Movement of Ground Water in Otter Creek-Dry Creek Basin, Cortland County, New York (open access)

Quality and Movement of Ground Water in Otter Creek-Dry Creek Basin, Cortland County, New York

Report and geographical survey. This report investigates the "steady increase in the chloride and nitrate content of the water" within a glacial aquifer in the Cortland area. Includes several maps and figures.
Date: 1978
Creator: Buller, William; Nichols, W. J. & Harsh, J. F.
System: The UNT Digital Library
Limnology of Laguna Tortuguero, Puerto Rico (open access)

Limnology of Laguna Tortuguero, Puerto Rico

Abstract: The principal chemical, physical and biological characteristics, as well as the hydrology of Laguna Tortuguero, Puerto Rico, were studied from 1974-75. The lagoon, with and area of 2.24 square kilometers and a volume of about 2.68 million cubic meters, contains about 5 percent of seawater. Drainage through a canal on the north side averages 0.64 cubic meters per second per day, flushing the lagoon about 7.5 times per year. Chloride and sodium are the principal ions in the water, ranging from 300 to 700 mg/L and 150 to 400 mg/L, respectively. Among the nutrients, nitrogen averages about 1.7 milligrams per liter, exceeding phosphorus in a weight ratio of 170:1. About 10 percent of the nitrogen and 40 percent of the phosphorus entering the lagoon is retained. The bottom sediments, with a volume of about 4.5 million cubic meters, average 0.8 and 0.014 percent nitrogen and phosphorus, respectively.
Date: March 1978
Creator: Quiñones-Márquez, Ferdinand & Fusté, Luis A.
System: The UNT Digital Library
Effects of Bottom Sediments on Infiltration from the Miami and Tributary Canals to the Biscayne Aquifer Dade County, Florida (open access)

Effects of Bottom Sediments on Infiltration from the Miami and Tributary Canals to the Biscayne Aquifer Dade County, Florida

This report examines the water quality of water within the Miami Canal, an important source of recharge for the recharge for the Biscayne aquifer. It includes maps and other figures.
Date: June 1978
Creator: Miller, Wesley L.
System: The UNT Digital Library
Chemical, Physical, and Radiological Quality of Selected Public Water Supplies in Florida, November 1977-February 1978 (open access)

Chemical, Physical, and Radiological Quality of Selected Public Water Supplies in Florida, November 1977-February 1978

Abstract: Virtually all treated public water supplies sampled in Florida meet the National Inter-Primary and Proposed Secondary Drinking Water Regulations. These findings are based on a water-quality reconnaissance of 129 treated public supplies throughout the State during the period November 1977 through February 1978. While primary drinking water regulation exceedences were infrequent , lead, selenium, and gross alpha radioactivity in a very few water supplies were above established maximum contaminant levels. Additionally , the secondary drinking water regulation parameters--dissolved solids, chloride, sulfate, iron, color, and pH--were occasionally detected in excess of the proposed Federal regulations. The secondary regulations, however, pertain mainly to the aesthetic quality of drinking water and not directly to public health aspects.
Date: April 1979
Creator: Irwin, George A. & Hull, Robert W.
System: The UNT Digital Library
Water-Quality Assessment of Rattlesnake Creek Watershed, Ohio (open access)

Water-Quality Assessment of Rattlesnake Creek Watershed, Ohio

From abstract: Chemical and biological water quality in Rattlesnake Creek basin, Ohio, are evaluated. The data include field and laboratory data for eight sites during August 1976-August 1977 and summaries of earlier (1972-76) data.
Date: April 1979
Creator: Evans, Kenneth F. & Tobin, Robert L.
System: The UNT Digital Library
Nonpoint-Source Discharges in Pequea Creek Basin, Pennsylvania, 1977 (open access)

Nonpoint-Source Discharges in Pequea Creek Basin, Pennsylvania, 1977

From abstract: The objective of this project was to assess the magnitudes and types of nonpoint discharges that affect the water quality of Pequea Creek. The project included the determination of (1) the total discharge of suspended sediment, nitrogen, and phosphorus from the basin; (2) intermittent storm and base-flow discharges from six subbasin sites of varying size, geology, and land use; (3) the difference in magnitudes of the discharges during base-flow periods and storms; and (4) which variables most affect the transport of these constituents.
Date: November 1979
Creator: Ward, Janice R. & Eckhardt, David A.
System: The UNT Digital Library