Digital geologic map of the Thirsty Canyon NW quadrangle, Nye County, Nevada

Minor, Scott A.; Orkild, P.P.; Sargent, K.A.; Warren, R.W.; Sawyer, David A.; Workman, Jeremiah B.

doi:10.3133/ofr98623

Cited by 3 publications

(14 citation statements)

References 4 publications

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“…The inner crater slopes have more abundant fluidal bombs typically 10-30 cm long, and scattered chunks of agglutinate that formed close to the vent and were later re-ejected. Some rounded bombs are coated with scoria lapilli that are imbedded on the bomb surfaces, suggesting that still-molten bombs that landed on the crater Crowe and Perry (1991), Fleck et al (1996), Minor et al (1998), and Slate et al (1999), as well as our own observations b Little Black Peak walls commonly rolled back toward the vent and accreted smaller clasts. The only in situ deposits in the cone are exposed in the gully between about 40-50 m below the cone summit.…”

Section: Hidden Conementioning

confidence: 73%

“…2b), although at a lower altitude than Hidden Cone, is located on the front of the Tolicha Peak range block, emplaced on a veneer of alluvial fan deposits, between ridges of Miocene Tuff of Sleeping Butte and the Middle Rhyolite of Quartz Mountain (Slate et al 1999;Minor et al 1998). Numerous normal faults are mapped in the nearby ridges (Fig.…”

Section: Little Black Peakmentioning

confidence: 94%

“…Normal faults with oblique slip components extend across the east slopes of Sleeping Butte (Fig. 1b), displacing the ignimbrite successively downward to the east (Minor et al 1998;Slate et al 1999). The Hidden Cone deposits bury the northern extensions of the faults, and there is no visible displacement within those deposits, indicating that slip completely predates the volcano.…”

Section: Hidden Conementioning

confidence: 96%

“…We have subdivided the northern lava field into two main units, A and B (Fig. 2a), following Minor et al (1998). The northern flows probably vented from a bocca near the base of the cone that was subsequently covered by loose scoria of the upper cone facies.…”

Section: Hidden Conementioning

confidence: 99%

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Eruptive styles and inferences about plumbing systems at Hidden Cone and Little Black Peak scoria cone volcanoes (Nevada, U.S.A.)

Valentine

Keating

2007

Bull Volcanol

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We describe two small scoria cone volcanoes, Hidden Cone and Little Black Peak (ages between~320-390 ka), in the Southwestern Nevada Volcanic Field and discuss their eruption mechanisms and inferences about their plumbing systems. Cone-forming pyroclastic deposits are consistent with eruptive styles ranging from Strombolian to violent Strombolian, and lavas emanated from near the bases of the cones. The volcanoes are monogenetic (rather than polycyclic, as allowed by previous geomorphic interpretations). Vents at each volcano appear to coincide with pre-existing normal faults, consistent with observations at older, deeply eroded volcanoes in the region. The existence of these two volcanoes on a topographically high area (particularly Hidden Cone) provides evidence for short feeder dike lengths (~500 m at the surface). We infer that this short length reflects the small length scale of the mantle source region that was tapped to feed each volcano.

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Section: Hidden Conementioning

confidence: 73%

Section: Little Black Peakmentioning

confidence: 94%

Section: Hidden Conementioning

confidence: 96%

Section: Hidden Conementioning

confidence: 99%

See 2 more Smart Citations

Eruptive styles and inferences about plumbing systems at Hidden Cone and Little Black Peak scoria cone volcanoes (Nevada, U.S.A.)

Valentine

Keating

2007

Bull Volcanol

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“…The Pliocene Crater Flat products probably formed a low shield volcano that was subsequently disrupted by normal faults. Buckboard Mesa consists of a prominent Inferred from geophysical data [Grauch et al, 1997] and geologic map [Minor et al, 1998]. e .…”

Section: Characteristics Of the Pliocene-pleistocene Volcanoesmentioning

confidence: 99%

Decreasing magmatic footprints of individual volcanoes in a waning basaltic field

Valentine

Perry

2006

Geophysical Research Letters

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[1] The distribution and characteristics of individual basaltic volcanoes in the waning Southwestern Nevada Volcanic Field provide insight into the changing physical nature of magmatism and the controls on volcano location. During Pliocene-Pleistocene times the volumes of individual volcanoes have decreased by more than one order of magnitude, as have fissure lengths and inferred lava effusion rates. Eruptions evolved from Hawaiian-style eruptions with extensive lavas to eruptions characterized by small pulses of lava and Strombolian to violent Strombolian mechanisms. These trends indicate progressively decreasing partial melting and length scales, or magmatic footprints, of mantle source zones for individual volcanoes. The location of each volcano is determined by the location of its magmatic footprint at depth, and only by shallow structural and topographic features that are within that footprint. The locations of future volcanoes in a waning system are less likely to be determined by large-scale topography or structures than were older, larger volume volcanoes.

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The Gold Flat Tuff, Nevada: Insights into the evolution of peralkaline silicic magmas

Macdonald

Bagiński

Belkin³

et al. 2019

Lithos

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The Gold Flat Tuff is the youngest (9.15 Ma) ash-flow sheet erupted from the Black Mountain Volcanic Centre, southwest Nevada, USA. This paper explores some aspects of the very complex nature of the tuff's plumbing system. The main body of the deposit is a mixed magma product, comprising pantelleritic and comenditic melts derived from independently evolving reservoirs, and antecrysts and enclaves derived from a range of basic to intermediate sources. Metre-scale cognate xenoliths point to the presence of alkali feldspar accumulation zones. The pantellerite contains phenocrysts of fluorite and chevkinite-(Ce). The inferred intermediate magma component contains perrierite-(Ce) phenocrysts. The pantellerite has unusually high contents of F (≤2.2 wt%), F+Cl (≤2.9 wt%) and ZrO2 (≤1.04 wt%). The high halogen contents may have influenced the evolution of the strongly peralkaline magma. The crystallization conditions are poorly constrained but those for the pantelleritic magma may have been close to water-saturation (>4 wt% melt water) at temperatures ~740 °C and fO2 around FMQ.

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Digital geologic map of the Thirsty Canyon NW quadrangle, Nye County, Nevada

Cited by 3 publications

References 4 publications

Eruptive styles and inferences about plumbing systems at Hidden Cone and Little Black Peak scoria cone volcanoes (Nevada, U.S.A.)

Eruptive styles and inferences about plumbing systems at Hidden Cone and Little Black Peak scoria cone volcanoes (Nevada, U.S.A.)

Decreasing magmatic footprints of individual volcanoes in a waning basaltic field

The Gold Flat Tuff, Nevada: Insights into the evolution of peralkaline silicic magmas

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