Preliminary geologic map of the Freel Peak 15-minute Quadrangle, California and Nevada

Armin, R. A.; John, David A.; Moore, William; Dohrenwend, J.C.

doi:10.3133/ofr801075

Cited by 11 publications

(23 citation statements)

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“…A gravity survey by Maurer (1984) indicates that the depth to consolidated bedrock beneath the western half of Carson Valley is as great as 5,000 ft. Base geology from Stewart and Carlson (1978) at 1:250,000 scale. Modified from geologic mapping by Stewart (1999) at 1:100,000 scale; by Armin and John (1983), Stewart and Noble (1979) at 1:62,500 scale; and by dePolo and others (2000), Garside andRigby (1998), andMuntean (2001) …”

Section: Geologic Settingmentioning

confidence: 99%

Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California

Jeton¹,

Maurer²

2007

Scientific Investigations Report

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Section: Geologic Settingmentioning

confidence: 99%

Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California

Jeton¹,

Maurer²

2007

Scientific Investigations Report

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“…The ignimbrites are weakly welded to non-welded. Mosier (1991) reported a sanidine K/Ar age of 28.2^1.1 Ma for this unit, and Armin et al (1983) reported a biotite K/Ar age of 25.9^0.4 Ma on an ignimbrite which we re-map as ignimbrite clasts inside volcanic fluvial sandstone (Tvs) at the northwestern end of the field area.…”

Section: Ignimbritesmentioning

confidence: 88%

“…Many contacts between basement rocks and the Tertiary rocks mapped by Armin et al (1983Armin et al ( , 1984 are retained with slight modifications described below. All Cretaceous plutonic rocks mapped by Armin et al (1983Armin et al ( , 1984 are grouped into one unit. All of the Quaternary deposits also are grouped into one unit, because there are no exposed fault scarps within these units.…”

Section: Field Studiesmentioning

confidence: 99%

Section: Previous Mappingmentioning

confidence: 99%

“…Previous mapping of two 15-min quadrangle maps covering the Hope Valley region (Armin et al 1983(Armin et al , 1984 divided Tertiary rocks into undifferentiated volcanic-volcaniclastic rocks, which they referred to as Relief Peak Formation, as well as intrusions, which were further divided by mineralogy. Armin et al (1983Armin et al ( , 1984 and Mosier (1991) described in text. Higher-resolution versions of this illustration are available via the 'Multimedia' tab on this article's page at www.informaworld.com (b) Chronostratigraphic correlation chart for the map units of the Kirkwood Valley -Carson Pass -Hope Valley area.…”

Section: Previous Mappingmentioning

confidence: 99%

See 2 more Smart Citations

Cenozoic palaeocanyon evolution, Ancestral Cascades arc volcanism, and structure of the Hope Valley–Carson Pass region, Sierra Nevada, California

Hagan

Busby

Putirka

et al. 2009

International Geology Review

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Two‐phase westward encroachment of Basin and Range extension into the northern Sierra Nevada

et al. 2002

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[1] Structural, geophysical, and thermochronological data from the transition zone between the Sierra Nevada and the Basin and Range province at latitude $39°N suggest $100 km westward encroachment of Basin and Range extensional deformation since the middle Miocene. Extension, accommodated primarily by east dipping normal faults that bound west tilted, range-forming fault blocks, varies in magnitude from <2% in the interior of the Sierra Nevada crustal block to >150% in the Wassuk and Singatse Ranges to the east. Geological and apatite fission track data from exhumed upper crustal sections in the Wassuk and Singatse Ranges point to rapid footwall cooling related to large magnitude extension starting at $14 -15 Ma. Farther to the west, geological and thermochronological data indicate a younger period of extension in the previously unextended Pine Nut Mountains, the Carson Range, and the Tahoe-Truckee depression initiated between 10 Ma and 3 Ma, and incipient post-0.5 Ma faulting to the west of the Tahoe-Truckee area. These data imply the presence of an extensional breakaway zone between the Singatse Range and the Pine Nut Mountains at $14 -15 Ma, forming the boundary between the Sierra Nevada and Basin and Range at that time. In addition, fission track data imply a Miocene preextensional geothermal gradient of 27 ± 5°C km À1 in the central Wassuk Range and 20 ± 5°C km À1 in the Singatse Range, much higher than the estimated early Tertiary gradient of 10 ± 5°C km À1 for the Sierra Nevada batholith. This might point to a significant increase in geothermal gradients coupled with a likely decrease in crustal strength enabling the initiation of extensional faulting. Apatite fission track, geophysical, and geological constraints across the Sierra Nevada-Basin and Range transition zone indicate a twostage, coupled structural and thermal westward encroachment of the Basin and Range province into the Sierra Nevada since the middle Miocene.

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Preliminary geologic map of the Freel Peak 15-minute Quadrangle, California and Nevada

Cited by 11 publications

References 0 publications

Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California

Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California

Cenozoic palaeocanyon evolution, Ancestral Cascades arc volcanism, and structure of the Hope Valley–Carson Pass region, Sierra Nevada, California

Two‐phase westward encroachment of Basin and Range extension into the northern Sierra Nevada

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