Results 121 to 130 of about 46,249 (173)

Bedrock geology of the northern Columbia Plateau and adjacent areas [PDF]

The Columbia Plateau is surrounded by a complex assemblage of highly deformed Precambrian to lower Tertiary continental and oceanic rocks that reflects numerous episodes of continental accretion.
Swanson, D. A., Wright, T. L.
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Spaceborne radar observations: A guide for Magellan radar-image analysis [PDF]

Geologic analyses of spaceborne radar images of Earth are reviewed and summarized with respect to detecting, mapping, and interpreting impact craters, volcanic landforms, eolian and subsurface features, and tectonic landforms.
Blom, R. G., Crisp, J. A., Elachi, Charles, Farr, T. G., Ford, J. P., Saunders, R. Stephen, Theilig, E. E., Wall, S. D., Yewell, S. B.   +8 more
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Petrology of the Kilauea Iki Lava Lake, Hawaii [PDF]

Professional Paper, 1966
D.H. Richter, J.G. Moore
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Voluminous lava flows at Oldoinyo Lengai in 2006: chronology of events and insights into the shallow magmatic system [PDF]

, 2008
BELTON, F, Ernst, Gerald, Jacobs, Patric, KELLER, J, Kervyn de Meerendre, Matthieu, KERVYN, F, KLAUDIUS, J, MATTSSON, HB, MBEDE, E   +8 more
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Cooling and vesiculation of Alae lava lake, Hawaii [PDF]

Professional Paper, 1978
openaire   +1 more source

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Extraterrestrial lava lakes

Journal of Volcanology and Geothermal Research, 2018
Abstract Active lava lakes are rare on Earth, with only ten documented examples, all formed by lavas of basaltic composition and housed inside summit craters or calderas. The existence of lava lakes on other planetary bodies may imply similarities in either composition or volcano-tectonic settings, and so has important implications for understanding ...
Lopes, Rosaly M.C., Gregg, Tracy K.P., Harris, Andrew, Radebaugh, Jani, Byrne, Paul, Kerber, Laura, Mouginis-Mark, Peter   +6 more
openaire   +3 more sources

Stability of lava lakes

Journal of Volcanology and Geothermal Research, 2006
A physical model of a generic lava lake system is developed. We derive the requisite conditions for the existence of an ‘equilibrium lava lake’ in which magmastatic pressure at the base of the conduit balances the pressure in the underlying magmatic reservoir.
Witham, F, Llewellin, EW
openaire   +2 more sources

The crystallization of lava lakes

Journal of Geophysical Research: Solid Earth, 1993
Thermal convection driven by the kinetic undercooling of solidification can produce compositional and textural variations in an initially uniform lava flow that is cooled predominantly from above. We show that such kinetic undercooling is sufficient to drive convection at high Rayleigh numbers even in shallow lava lakes.
M. Grae Worster, Herbert E. Huppert, R. Stephen J. Sparks   +2 more
openaire   +1 more source

Numerical analysis of lava lake cooling models; Part II, Application to Alae lava lake, Hawaii

American Journal of Science, 1977
The numerical formulation of Shaw, Hamilton, and Peck (p. 384-414 of this issue) using the method of explicit cell balances was applied to the cooling of Alae lava lake, Hawaii. Temperatures in this 15-m-thick, ponded basalt flow were measured over a 4-yr period from 1 week after it formed in August 1963 at a temperature of 1140 degrees C until ...
D. L. Peck, M. S. Hamilton, H. R. Shaw
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Geothermometry of Kilauea Iki lava lake, Hawaii

Bulletin of Volcanology, 1987
Data on the variation of temperature with time and in space are essential to a complete understanding of the crystallization history of basaltic magma in Kilauea Iki lava lake. Methods used to determine temperatures in the lake have included direct, downhole thermocouple measurements and Fe-Ti oxide geothermometry.
Rosalind Tuthill Helz, Carl R. Thornber
openaire   +1 more source