Geology topics
R.C. Heath
Publications and source records attributed to R.C. Heath.
Cost-effectiveness of the US Geological Survey stream-gaging program in central Florida
In the Red Oak area, Oklahoma, water in shale bedrock occurs in bedding planes and fractures and is confined. Wells probably yield less than 5 gallons per minute. Ground water is a sodium or mixed cation carbonate/bicarbonate type with dissolved-solids concentrations ranging from about 300 to 700 milligrams per liter. No relationship between water chemistry and well depth or location is apparent. Brazil Creek flows 1 cubic foot per second or less about 25 percent of the time and has no flow about 15 percent of the time. Water in Brazil Creek is a mixed cation carbonate/bicarbonate type. Dissolved-solids concentrations upstream from old and recent mines ranged from 30 to 100 milligrams per liter whereas concentrations downstreams from the mines ranged from 50 to 600 milligrams per liter. Excessive levels of cadmium, chromium, lead, and mercury at times preclude use of water from Brazil and Rock Creeks for public supply. Maximum suspended-sediment discharge, in tons per day, was 2,500 for Brazil Creek and 3,300 for Rock Creek. Silt-clay particles with diameters less than 0.062 millimeter were the dominant sediment size. (USGS)
Bicarbonate content of groundwater in carbonate rock in eastern North America
In carbonate-rock terrane the most effective solution occurs where soil and vegetative cover facilitate biogenic production and storage of CO 2 in the soil until part of it is carried downward in percolating water. Bicarbonate data for groundwater in eastern North America are examined in the light of these conditions, of the CO 2 content of soil gas, and of the timing of groundwater recharge relative to seasonal changes in soil temperature. There appears to be no well-marked relation between latitude and bicarbonate content of groundwater in this region. Interplay of all the factors listed above, and of lithology and soil types, is evidently such that under optimum conditions the amount of solution of carbonate rock is roughly comparable, per unit of groundwater recharge, over the region from Ohio to Florida (and, perhaps, to Puerto Rico and Yucatan). Relatively low HCO 3 concentrations observed in much of the southern United States are attributed to low production and storage of CO 2 in sandy soil that is poor in organic matter. On the other hand, concentrations observed in Ontario, New York and Michigan are markedly higher than is to be expected from interrelations of the factors considered. These high values, apparently anomalous, are attributed in part to solution of granular glacial drift derived largely from carbonate rock.
Ground-water studies in Saratoga County, New York
Explore the source record for details and available documents.
Ground-water resources of Dutchess County, New York
Explore the source record for details and available documents.