Geologic map of Bare Mountain, Nye County, Nevada

Monsen, Susan A.; Carr, Michael; Rheis, M.C.; Orkild, P.P.

doi:10.3133/ofr9025

Cited by 8 publications

(18 citation statements)

References 9 publications

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“…One of these faults is also expressed in early Pleistocene and Pliocene alluvial fan material on the east side of BM (Monsen et al, 1992). The BMF, which marks the eastern edge of the mountain block, may have more than 2 km of vertical displacement (Snyder and Carr, 1984).…”

Section: -7 Nueeg/cr-6401mentioning

confidence: 99%

“…Alluvial fan sediments mapped on the east and west sides of BM are interpreted, based upon correlation with dated sediments, to be Holocene to early Pleistocene or Pliocene in age (Reheis, 1986;Monsen et al, 1992). The BM alluvial fan sediments are subdivided into three units: (i) younger alluvial fan deposits (Holocene), (ii) intermediate alluvial fan deposits (late Pleistocene), and (iii) older alluvial fan deposits (early Pleistocene and/or Pliocene) (Figure 2-7).…”

Section: Bare Mountain Alluvial Fansmentioning

confidence: 99%

“…The erosional behavior is likely to be controlled by lithology and the extent of metamorphism. Metamorphism in BM generally increases from northeast to southwest (Monsen, 1983;Monsen et al, 1992). The upper clastic unit (unit III) is exposed in BM only at the northeastern comer.…”

Section: -21mentioning

confidence: 99%

“…In the case of a pure dip-slip, normal fault, for example, a 20" change in fault dip from 50 to 70" causes a 125-percent increase in the rate of throw (from 0.12 to 0.27 mndyr, assuming a heave rate of 0.10 mndyr; Figure 2-14). The BMF dips eastward at 45 to 55" near Tarantula Canyon, whereas south of Tarantula Canyon the dip of the fault is generally 60 to 70" eastward (Monsen et al, 1992). The minimum rate of throw estimated from a trench dug across a fault trace in Quaternary alluvium of the Tarantula Canyon fan is 0.015 mndyr (Pezzopane, 1995 and references therein).…”

Section: Bare Mountain Fault Slip Rate and Alluvial Fansmentioning

confidence: 99%

See 3 more Smart Citations

Faulting in the Yucca Mountain region: Critical review and analyses of tectonic data from the central Basin and Range

Ferrill¹,

Stirewalt²,

Henderson³

et al. 1996

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Section: -7 Nueeg/cr-6401mentioning

confidence: 99%

Section: Bare Mountain Alluvial Fansmentioning

confidence: 99%

Section: -21mentioning

confidence: 99%

Section: Bare Mountain Fault Slip Rate and Alluvial Fansmentioning

confidence: 99%

See 2 more Smart Citations

Faulting in the Yucca Mountain region: Critical review and analyses of tectonic data from the central Basin and Range

Ferrill¹,

Stirewalt²,

Henderson³

et al. 1996

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“…Such rocks have been mapped in the Bare Mountain area (Monsen et al, 1992) and in the Bullfrog Hills (Maldonado and Hausback, 1990). In the Death Valley area of California, sedimentary rocks dominate the Tertiary strata.…”

Section: Locationmentioning

confidence: 99%

Assessment of industrial minerals and rocks in the controlled area

Castor¹,

Lock²

1996

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Mesozoic deformation in the Nevada Test Site and vicinity: Implications for the structural framework of the Cordilleran Fold and thrust belt and tertiary extension north of Las Vegas Valley

Caskey¹,

Schweickert²

1992

Tectonics

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Detailed studies in the CP Hills and Mine Mountain area of the Nevada Test Site (NTS), together with analysis of published maps and cross sections and a reconnaissance of regional structural relations, indicate that the CP thrust of Barnes and Poole [ 1968] actually comprises two separate, oppositely verging Mesozoic thrust systems: (1) the west vergent CP thrust, which is well exposed in the CP Hills and at Mine Mountain, and (2) the east vergent Belted Range thrust located northwest of Yucca Flat. Regional structural relations indicate that the CP thrust forms part of a narrow sigmoidal belt of west vergent folding and thrusting traceable for over 180 km along strike. The Belted Range thrust represents earlier Mesozoic deformation that was probably related to the Last Chance thrust system in southeastern California, as suggested by earlier workers. A reconstruction of the pre-Tertiary geometry of the Cordilleran fold and thrust belt in the region between the NTS and the Las Vegas Range bears a close resemblance to other regions of the Cordillera and suggests that west vergent deformation developed in the hinterland of a part of the Sevier fold and thrust belt characterized by substantial structural relief. Reconstruction of the fold and thrust belt also suggests that previous estimates of upper crustal Tertiary extension north of the Las Vegas Valley shear zone (e.g., 80% [Guth, 1981]) are 2 or 3 times too large. INTRODUCTION The Nevada Test Site (NTS) (Figure 1) of the southern Great Basin lies within the dominantly east vergent Mesozoic Cordilleran thrust belt near one of the thickest known parts of the Paleozoic Cordilleran miogeocline. In this region, Barnes and Poole [1968] and Hinrichs [ 1968] interpreted several thrust faults that place upper Precambrian and lower Paleozoic rocks over upper Paleozoic rocks as remnants of a single, regional, east to southeast vergent thrust system. They named this thrust system the CP thrust Paper number 92TC00456, 027 8-7407/92/92TC-00456510.00 for exposures in the CP Hills, south of Yucca Flat (Figure 1). Subsequent work on the Mesozoic structure in the region has been hampered by the general inaccessibility of the NTS and surrounding regions. Later discussions of the regional structural setting of the NTS and vicinity [e.g. Cart, 1984; Wemicke et al., 1988a,b] have therefore relied on these earlier interpretations. Our derailed studies in the CP Hills and Mine Mountain area (Figure 1), together with published maps and cross sections by Orkild [ 1968] and McKeown et al. [ 1976] and a reconnaissance of regional structural relations, indicate that the CP thrust of Barnes and Poole [1968] actually comprises parts of two separate, oppositely verging thrust systems:(1) the west vergent CP thrust, which is well exposed in the CP Hills and at Mine Mountain (Figures 1 and 4), and (2) the southeast vergent Belted Range thrust, located northwest of Yucca Flat (Figure 1). Herein, we redefine the CP thrust of Barnes and Poole [ 1968](1968) and suggest a revision of nomenclature for...

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Geologic map of Bare Mountain, Nye County, Nevada

Cited by 8 publications

References 9 publications

Faulting in the Yucca Mountain region: Critical review and analyses of tectonic data from the central Basin and Range

Faulting in the Yucca Mountain region: Critical review and analyses of tectonic data from the central Basin and Range

Assessment of industrial minerals and rocks in the controlled area

Mesozoic deformation in the Nevada Test Site and vicinity: Implications for the structural framework of the Cordilleran Fold and thrust belt and tertiary extension north of Las Vegas Valley

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