Correlation characteristics of surficial deposits with a description of surficial stratigraphy in the Nevada Test Site region

Hoover, D.L.; Swadley, W.C.; Gordon, Andrew

doi:10.3133/ofr81512

Cited by 20 publications

(29 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The upper Tertiary and Quaternary sediments that fill Midway _valley consist mostly of alluvial fan deposits (fluvial and debris-flow sediments), colluvial deposits, and some thin eolian deposits (described in this study; see also Hoover et al, 1981;Swadley et al, 1984;and Hoover, 1989).…”

Section: Acknowledgementsmentioning

confidence: 66%

“…A summary of the detailed Quaternary stratigraphy of the Yucca Moulztain region was presented by Hoover et al (1981), building on work by Hoover and Morrison (1980) as well as by Bull and Ku (1975) and Morrison (1967). Swadley and Hoover (1983) and Swadley et al (1984) retained the stratigraphy of Hoover et al 9 b (1981) to describe the Quaternary stratigraphy in the NTS area and al Crater Flats to the west of Yucca Mountain, primarily for use in fault studies.…”

Section: Yucca Wash Drainage Basinmentioning

confidence: 99%

“…Swadley and Hoover (1983) and Swadley et al (1984) retained the stratigraphy of Hoover et al 9 b (1981) to describe the Quaternary stratigraphy in the NTS area and al Crater Flats to the west of Yucca Mountain, primarily for use in fault studies. Hoover (1989) elaborated on the work ()f Hoover et al (1981), retaining the established stratigraphy while modifying the assigned ages of stratigraphic units proposed by Swadley et al (1984). No detailed Quaternary geologic studies have been published on Midway…”

Section: Yucca Wash Drainage Basinmentioning

confidence: 99%

See 2 more Smart Citations

Preliminary mapping of surficial geology of Midway Valley Yucca Mountain Project, Nye County, Nevada; Yucca Mountain Site Characterization Project

Wesling¹,

Bullard²,

Swan³

et al. 1992

View full text Add to dashboard Cite

ABSTRACT'f'he lectonic's program for the propo_'d highdt.wel nuclear waste repository al Yucca Mounlain in _mthwestern Nevada must ¢.waluale _he potential for surface faulting Ix:neath the pr_xspective surface facilities. To help meet this goal, (.)ualernary surficial mapping studies and photolineamenl analysc_ were conducted to provide data for evaluating the location, recent),, and style of faulting within Midway Valley al the eastern base of Yucca Mountain, the preferred Icmalion of thc.,se surface facilities.This interim relx_rt presents the preliminary results of this work.Ten surficial map units were identified in Midway Valley, primarily on the basis of landform nlorphology, geomorphic I_silion, relative pre_rvalion of the original surface morph_logy, deserl pavement development, desert varnish cover, clasl weathering, and s,_il development.Map units include remnants of eight separate alluvial fan and terrace surfaces, including the m(_lern fluvial surlacc, an undifferentiated colluvium/det_ris flow terrain, and the adjacent bedrock terrain. The oldest surface (Qo) is preserved as a single terrace remnant and may be Plio.Phfist(x:ene.Younger surfacc_, _.,isibly ranging in age from early or middle Pleishwcne (Qf) to latest l'lcistocene/early tioRx:ene (05). persist as stream terraces and alluvial fan surfacc-s. I tohxzcne units ,,x:cur as low terraces and vcgclatcd bars (Q6) along active washes (Q7)' IJndifferenliated colluvial units of at least three different ages mantle the hill sl,q_s. Preliminary dt..'scriptions of lhe surfaces, and the _ils and underlying del_sils as,s_ciated with those surfaces, were made al Ic_alitics representing ea(_h major map unit. Table 3-1 Definition of relative-age and particle-size parameters used to describe weathering characteristics of alluvial fan and terrace surfaces 17 Table 3-2 Relative-age and particle-size data for alluvial fan and terrace surfaces in northern Midway Valley 20 (DOE, 1988(DOE, , 1989. LIST OF TABLESThe primary objective of SCP Study 8.3.1.17.4.2 (DOE, 1989) is to acquire surface and near-surface geologic data to evaluate the potential for surface fault rupture within Midway Valley, the potential location of the prospective surface facilities (Figure 1-1).The SCP study consists of two activities: Activity 1, to characterize the surficial geology, including describing the lithology exposed in soil pits and exploratory trenches, and identify appropriate locations for the long (greater than 100 m) trenches; and Activity 2, to excavate and log the long and supplemental trenches (DOE, 1988 Stereoscopic pairs of l:6000-scale color and color-infrared aerial photographs were interpreted, and the geologic contacts were transferred to l:6000-scale topographic base maps (Plates 1 and 2). Field investigations were conducted to check the geologic contacts and to collect data on the identified map units. The geomorphic surfaces and the soils and deposits associated with those surfaces were described., ', Although SCP Study 8.3.1.17.4.2 (DOE, 1989) call...

show abstract

Section: Acknowledgementsmentioning

confidence: 66%

Section: Yucca Wash Drainage Basinmentioning

confidence: 99%

Section: Yucca Wash Drainage Basinmentioning

confidence: 99%

See 1 more Smart Citation

Preliminary mapping of surficial geology of Midway Valley Yucca Mountain Project, Nye County, Nevada; Yucca Mountain Site Characterization Project

Wesling¹,

Bullard²,

Swan³

et al. 1992

View full text Add to dashboard Cite

show abstract

“…Hoover et al (1981). The subsurface calcites occur as two textural varieties, namely sparry calcites and micritic calcites.…”

Section: -36mentioning

confidence: 99%

The origin and history of alteration and carbonatization of the Yucca Mountain ignimbrites. Volume I

Szymański¹

1992

View full text Add to dashboard Cite

“…The surficial alluvial deposits have been studied, mapped and correlated by USGS personnel and are documented by Hoover, et al (1981) and Fernald et al (1968). The shallow sediments have been well characterized for the Area 3 RWMS and documented in several reports including BN (1998BN ( , 1999BN ( , 2005b and Levitt and Yucel (2002).…”

Section: Other Studiesmentioning

confidence: 99%

A Hydrostratigraphic Model and Alternatives for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 97: Yucca Flat-Climax Mine, Lincoln and Nye Counties, Nevada

2006

View full text Add to dashboard Cite

A new three-dimensional hydrostratigraphic framework model for the Yucca Flat-Climax Mine Corrective Action Unit was completed in 2005. The model area includes Yucca Flat and Climax Mine, former nuclear testing areas at the Nevada Test Site, and proximal areas. The model area is approximately 1,250 square kilometers in size and is geologically complex.Yucca Flat is a topographically closed basin typical of many valleys in the Basin and Range province. Faulted and tilted blocks of Tertiary-age volcanic rocks and underlying Proterozoic and Paleozoic sedimentary rocks form low ranges around the structural basin. During the Cretaceous Period a granitic intrusive was emplaced at the north end of Yucca Flat.A diverse set of geological and geophysical data collected over the past 50 years was used to develop a structural model and hydrostratigraphic system for the basin. These were integrated using EarthVision ® software to develop the 3-dimensional hydrostratigraphic framework model. Fifty-six stratigraphic units in the model area were grouped into 25 hydrostratigraphic units based on each unit's propensity toward aquifer or aquitard characteristics. The authors organized the alluvial section into 3 hydrostratigraphic units including 2 aquifers and 1 confining unit. The volcanic units in the model area are organized into 13 hydrostratigraphic units that include 8 aquifers and 5 confining units. The underlying pre-Tertiary rocks are divided into 7 hydrostratigraphic units, including 3 aquifers and 4 confining units. Other units include 1 Tertiary-age sedimentary confining unit and 1 Mesozoic-age granitic confining unit. The model depicts the thickness, extent, and geometric relationships of these hydrostratigraphic units ("layers" in the model) along with the major structural features (i.e., faults). The model incorporates 178 high-angle normal faults of Tertiary age and 2 low-angle thrust faults of Mesozoic age.The complexity of the model area and the non-uniqueness of some of the interpretations incorporated into the base model made it necessary to formulate alternative interpretations for some of the major features in the model. Five of these alternatives were developed so they could be modeled in the same fashion as the base model.

show abstract

Correlation characteristics of surficial deposits with a description of surficial stratigraphy in the Nevada Test Site region

Cited by 20 publications

References 10 publications

Preliminary mapping of surficial geology of Midway Valley Yucca Mountain Project, Nye County, Nevada; Yucca Mountain Site Characterization Project

Preliminary mapping of surficial geology of Midway Valley Yucca Mountain Project, Nye County, Nevada; Yucca Mountain Site Characterization Project

The origin and history of alteration and carbonatization of the Yucca Mountain ignimbrites. Volume I

A Hydrostratigraphic Model and Alternatives for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 97: Yucca Flat-Climax Mine, Lincoln and Nye Counties, Nevada

Contact Info

Product

Resources

About