Ground water test well D, Nevada Test Site, Nye County, Nevada

Abstract

Groundwater test well D was drilled to a depth of 1,950 feet with rotary and cable-tool drilling rigs. It penetrated alluvium from 0 to 1,505 feet; tuff of Tertiary age from 1,505 to 1,730 feet; talus (?) breccia from 1,730 to 1,750 feet; and rocks of Mississippian to Pennsylvanian age from 1,750 to 1,950 feet. The Paleozoic bedrock in the depth interval from about 1,750 to 1,840 feet is composed mainly of interbedded dolomite and limestone; in the interval 1,840 to 19950 feet it consists of argillite. The static water level is about 1,733 feet below the land surface (altitude, 2,417 feet). The aquifer in test well D comprises the talus (7) breccia and the carbonate rocks in the interval from 1,730.to 1,840 feet. Tests by bailing indicate that the minimum transmissibility of the aquifer is about 90 gallons per day per foot. The specific capacity was less than 0.3 gallons per minute per foot after 3 1/h hours of bailing at a rate of 18 gallons per minute. These tests also indicate that the transmissibility of the argillite stratum underlying the aquifer is extremely low. A suite of geophysical logs, a summary of contract costs, and detailed descriptions of the drilling machines, drilling operations, and the casing and cementing operations are presented.

Hydrogeologic and hydrochemical framework, south-central Great Basin, Nevada-California, with special reference to the Nevada Test Site

“…At no place is the valley fill so indurated or cemented that it cannot be dug easily with a miner's pick. Price and Thordarson (1961) and Thordarson, Garber, and Walker (1962) presented data on valley fill penetrated by test wells 83-68 and 84-67 in central Yucca Flat; their descriptions agree with those of W. P. Williams, W. L. Emerick, R. E. Davis, and R. P. Snyder (written commun., June 1963), who also presented porosity data for the valley fill. They collected 42 samples from depths ranging from 500 to 1,500 feet in 20 drill holes and in the U2j shaft.…”

“…I. J. Winograd. The lithologic, hydrologic, and physicalproperty data obtainec from five of these holes were summarized by Price aid Thordarson (1961), Thordarson, Garber, and Walker (1962), Garber and Thordarson (1962), J. E. Moore and Garber (1962), and J. E. Moore, Doyle, Walker, and Young (1963). A brief synthesis of the test-hole data, emp lasizing how the data related to the regional flow of ground water, was presented by Winograd (1962).…”

Groundwater chemistry at the Nevada Test Site: Data and preliminary interpretations

“…Chemical data for the period 1957 to 1977 were gathered from the following USGS reports: Schoff and Moore (1964), Blankennagel and Weir (1973), Young (1965), Thordarson et al (1962), Robinson and Beetem (1965), and Dinwiddie and Weir (1979). These data are presented in Appendix A.…”

Ground-water test well 2, Nevada test site, Nye County, Nevada : a summary of lithologic data, aquifer tests, and well construction

“…Nevada Test Site. Clebsch and Winograd (in Wilmarth and others, 1959, p. 36-49) have given a preliminary description of the hydrology of Yucca Price and Thordarson (1961), Moore and Garber (1962), Garber and Thordarson (1962), and Thordarson, Garber, and Walker (1962) discussed the drilling, lithology, and.hydrology of test wells A, B, C, and D respectively. Schoff andWinograd (1961, 1962) summarized the hydrology of the carbonate rocks of Paleozoic age, based on six core holes.…”