Multimedia

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Model of reservoirs underneath Long Valley Caldera...
August 8, 2016

Model of reservoirs underneath Long Valley Caldera

Main hydrothermal features of the new (2016) 3-D model of the subsurface at Long Valley Caldera. This schematic is based on a survey of the electrical properties of the earth (magnetotellurics) below. Arrows show subsurface water flow, with colors keyed to changing water temperature, from blue (cold) to red (hot). Purple arrows show an extinct hot water pathway. See 2016

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Long Valley Caldera Range Front Fault Diagram...
January 22, 2016

Long Valley Caldera range-front faults terminate at the caldera bou...

This is a simplified diagram of regional range front faults as they intersect the Long Valley Caldera. The Hartley Springs Fault and Hilton Creek Fault are range-front faults caused by regional Basin and Range extension (Earth's crust is pulling apart, and the Sierra Nevada mountains are lifting up and moving to the west as the Basin and Range drops down to the east).

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Conceptual geologic model of partially crystallized magma (C1, C3) ...
October 29, 2015

Conceptual geologic model of partially crystallized magma (C1, C3) ...

C1 and C3 are granitic crystal-melt mush (partially crystallized magma) columns that fed the most recent Mono Craters eruptions. The connection from C1 to South Coulée (SC) is older and colder than the connection from C3 to North Coulée (NC) and Panum Crater (PC), which carries hydrothermal fluid to the surface. C2 depicts a fracture network containing fluids of

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Map of the fissures and faults in the Inyo Craters area.
December 31, 2013

Map of the fissures and faults in the Inyo Craters area.

Map of the fissures and faults in the Inyo Craters area, California. Fissures and faults are shown by solid lines where well defined, by dashed lines where poorly defined or their existence is uncertain, by dot-dashed lines where mantled by rock debris, and by dotten lines where covered and totally obscured by rock debris.

Obsidian Flow, a large circular-shaped lava flow covered in snow.
December 31, 2013

Obsidian Flow, large circular-shaped flow, part of Mono-Inyo Chain

Obsidian Flow, a large circular-shaped lava flow, is part of the Mono-Inyo Chain, California.

Map shows hazard zone for pyroclastic flows and surges around poten...
December 31, 2012

Map shows hazard zone for pyroclastic flows and surges around poten...

Map shows hazard zone for pyroclastic flows and surges around potential vents in the Mammoth Mountain area of the Long Valley Caldera.

Map shows the potential thickness of tephra on the ground from futu...
December 31, 2012

Map shows the potential thickness of tephra on the ground from futu...

Map shows the potential thickness of tephra on the ground from future eruptions in the Long Valley area.

Glass Creek Dome seen from highway 395, Long Valley Caldera....
September 17, 2009

Glass Creek Dome seen from highway 395, Long Valley Caldera.

View of Glass Creek flow from Highway 395 looking toward the west; the crest of the Sierra Nevada towers above. The flow descends the steep northwest wall of the Long Valley caldera.

Unnamed dome of the Mono-Inyo Chain located south of Panum Crater a...
June 11, 2007

Unnamed dome of the Mono-Inyo Chain located south of Panum Crater a...

Unnamed dome of the Mono-Inyo Chain located south of Panum Crater and north of North Coulee (Crater Mountain).

Mono Crater viewpoint toward the north with Panam Crater and Poaha ...
June 11, 2007

Mono Crater with Panam Crater and Poaha Island in Mono Lake

Altered rocks in an area of diffuse CO2 upflow on the west side of North Coulee an approximately 660 year old dome in the Mono Craters volcanic chain. Mono Lake and Paoha Island also shown.