Results 181 to 190 of about 20,360 (229)

Magma Floods, Flood Basalts, and Surge Tectonics

1996
Tyrrell (1937) brought into the literature the term “flood basalts,” to give substance to a concept that he felt would improve the understanding of the effusion and flow of basaltic lavas. Tyrell was dissatisfied with the term “plateau basalt,” which had been current for more than a half century because it “… merely refers to an accidental and ...
Arthur A. Meyerhoff, Irfan Taner, A. E. L. Morris, W. B. Agocs, M. Kamen-Kaye, M. I. Bhat, N. C. Smoot, Dong R. Choi, Donna Meyerhoff Hull   +8 more
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Mantle plumes and flood basalts

Journal of Geophysical Research: Solid Earth, 1995
We discuss the geological, geophysical, and petrological observations that constrain the nature of mantle convection in plumes, and show how theoretical models of mantle plumes have developed over the past three decades. The large volumes of lava emplaced in geologically short periods as flood basalts are generated mainly by decompression melting of ...
R. S. White, D. McKenzie
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An ancient recipe for flood-basalt genesis

Nature, 2011
Large outpourings of basaltic lava have punctuated geological time, but the mechanisms responsible for the generation of such extraordinary volumes of melt are not well known. Recent geochemical evidence suggests that an early-formed reservoir may have survived in the Earth's mantle for about 4.5 billion years (ref.
Matthew G, Jackson, Richard W, Carlson
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Continental Flood Basalt Provinces

2001
Since the start of the Mesozoic Era about 230 million years ago, large volumes of tholeiite basalt have been erupted through fissures on all of the continents. In several cases, the extrusion of these lavas occurred in conjunction with the break-up of the supercontinents of Gondwana and Pangea.
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Crustal flexures and flood basalts

Tectonophysics, 1966
Abstract Five major flexures or downwarps in the earth's crust are described. Each appears to be related to the extrusion of thick sequences of flood basalts extruded from long linear fissure systems. The flexures and associated volcanicity are perhaps related to large scale crustal deformation.
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The Ethiopian Flood Basalt Province

1988
The Ethiopian flood basalt province embraces the Afar triple-rift junction, where the African Rift System meets the Red Sea and Gulf of Aden sea-floor spreading zones. Prolific eruption of basalt and subordinate other lavas during Tertiary time has built up a subaerial volcanic pile, typically 500–1500 m thick and locally attaining 3000 m.
Paul Mohr, Bruno Zanettin
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Continental Tholeiitic Flood Basalt Provinces

2007
Large areas of the continents appear to have been covered by vast thicknesses of laterally extensive basaltic lava flows at various stages during the past 1000 Ma, apparently fed from fissures rather than central vent volcanoes. These are referred to as continental flood basalt provinces or CFBs.
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Flood Basalts--Bigger and Badder

Science, 2002
During episodes of flood volcanism, vast amounts of mass and energy are transferred from Earth's interior to the surface within relatively short periods of time. Episodes of major flood volcanism coincided with severe mass extinctions, and perhaps also with large meteor impacts. In his Perspective, [Renne][1] discusses recent studies into the causes of
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Basalt geochemistry and tectonic discrimination within continental flood basalt provinces

Journal of Volcanology and Geothermal Research, 1987
Abstract Continental flood basalts are usually regarded as a single tectonomagmatic entity but frequently quoted examples exhibit a variety of tectonic settings. In one well-studied, classic, flood basalt province, the Mesozoic Karoo province of southern Africa, magmatism occurred in the following tectonic settings: (a) continental rifting leading to
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Flood Basalt

2011
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