Results 141 to 150 of about 11,994 (188)

Tectonic trigger to the first major extinction of the Phanerozoic: The early Cambrian Sinsk event. [PDF]

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Myrow PM   +6 more
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Magma genesis of continental flood basalts : A case study of Deccan Trap basalts, India

open access: yesMagma genesis of continental flood basalts : A case study of Deccan Trap basalts, India
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On causal links between flood basalts and continental breakup

Earth and Planetary Science Letters, 1999
Abstract Temporal coincidence between continental flood basalts and breakup has been noted for almost three decades. Eight major continental flood basalts have been produced over the last 300 Ma. The most recent, the Ethiopian traps, erupted in about 1 Myr at 30 Ma.
V Courtillot   +4 more
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Dehydration melting and the generation of continental flood basalts

Nature, 1992
CONTINENTAL flood basalt provinces represent important magmatic events, which may contribute significantly to the generation of new crust. In a typical flood basalt province, large volumes of magma are erupted in a short time: for example, at least 106 km3 in 2–3 Myr in the Parana–Etendeka province of southeast Brazil and northern Namibia.
Kerry Gallagher, Chris Hawkesworth
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Petrology and geochemistry of basaltic rocks from north western Ethiopian plateau continental flood Basalt

Journal of African Earth Sciences, 2021
Abstract Petrography and geochemical (major and trace element) data are presented for basaltic lavas from north western-Ethiopian plateau flood basalts and shield basalts. Geochemical classification shows three groups of basaltic rocks: Alkali, tholeiitic and transitional basalts.
Tilahun Tamirat   +2 more
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Celadonite in continental flood basalts of the Columbia River Basalt Group

American Mineralogist, 2012
Celadonite is a common alteration product of basalts in marine environments. It has been argued that marine fluids are necessary for celadonite formation, possibly by providing a source of K and other dissolved cations. Laterally extensive deposits of celadonite occur in basalts of the Grande Ronde Basalt of the Columbia River Basalt Group.
L. L. Baker   +3 more
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Magma differentiation and mineralisation in the Siberian continental flood basalts

Lithos, 1995
New major, trace element and Sr and Nd isotope data are presented for selected lavas from the three uppermost formations in the Siberian Trap, and on over 60 samples of the associated intrusive rocks. The lavas from a 1400 m section are remarkably homogeneous and, apart from four samples of basaltic andesites, SiO2 = 48.4–49.6%, MgO = 8.1–6.3%, and Mg∗
C.J. Hawkesworth   +6 more
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Pahoehoe flows from the central Paraná Continental Flood Basalts

Bulletin of Volcanology, 2006
Inflated and compound pahoehoe flows have been identified within the central Parana Continental Flood Basalts based upon their morphology, surface features, and internal zonation. Pahoehoe flow features have been studied at five localities in the western portion of Parana State, Brazil: Ponte Queimada, Toledo, Rio Quiteria, Matelândia and Cascavel.
Breno L. Waichel   +3 more
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