Results 171 to 180 of about 20,360 (229)

Understanding cratonic flood basalts

Earth and Planetary Science Letters, 2006
The origin of continental flood basalts has been debated for decades. These eruptions often produce millions of cubic kilometers of basalt on timescales of only a million years. Although flood basalts are found in a variety of settings, no locale is more puzzling than cratonic areas such as southern Africa or the Siberian craton, where strong, thick ...
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Flood Basalts, Basalt Floods or Topless Bushvelds? Lunar Petrogenesis Revisited

Journal of Petrology, 2000
primary magmas. Mare basalt hand-specimen and pyroclastic glass There is a conspicuous dichotomy in the conventional model of bead compositions do not, however, display the required crystallization lunar petrogenesis between the total intra-crustal differentiation sequence and cannot represent the required primary melt compositions.
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Ethiopian flood basalt province

Nature, 1983
The most voluminous outpourings of lava on the land surface of the Earth have built imposing stacks of superimposed basalt flows, as much as several thousands of metres thick. Such stacks, or piles, were fed from linear zones of fracturing and fissuring in the crust through which basaltic magma emerged in successive pulses, flooding out over the ...
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Flood Basalt Landscapes

2017
Flood basalts create beautiful and impressive landscapes, whether these landscapes be humid tropical and thickly forested, frozen and snow-covered, hot and arid, or any other. The larger-scale elements of flood basalt landscapes are plateaus and escarpments, canyons and gorges, mesas and buttes, formed on the typically horizontal lava stacks ...
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Lithosphere and flood basalts

Nature, 1994
So-called hotspot magmas, including ocean island basalts and continental flood basalts, differ isotopically from mid-ocean- ridge basalts (MORB) and require a reservoir, or a component, that has been isolated from the MORB source for more than 2 billion years.
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Continental Flood Basalts

1988
The Columbia River Basalt.- Flood Basalt Volcanism in the Northwestern United States.- The Ethiopian Flood Basalt Province.- The North Atlantic Tertiary Province.- Deccan Traps.- Continental Flood Volcanism From the Parana Basin (Brazil).- The Karoo Province.- Traps of the Siberian Platform.- Cenozoic Basaltic Rocks in Eastern China.- Continental Flood
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