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An innovative process for lead upgrade from Kaldo smelting slag of lead ores: characterization and flotation. [PDF]
Sci RepRamezani H, Kamran Haghighi H.
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Geochemistry and Petrogenesis of Northwest Africa 10401: A New Type of the Mg‐Suite Rocks
Journal of Geophysical Research: Planets, 2020The petrogenetic models of the lunar crust are built on the returned Apollo and Luna samples collected from limited parts of the lunar nearside that are chemically unusual (i.e., material rich in K, Rare Earth Elements, and P [KREEP]) and not ...
J. Gross +5 more
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Annual Review of Earth and Planetary Sciences, 1986
Andesites are most commonly found at convergent plate margins, where they constitute part of the erupted lavas of volcanic arcs that parallel subduction zones. They are also found less frequently as eruptive products in divergent plate boundaries, in association with midocean ridge basaltic volcanism.
Timothy L. Grove, Rosamond J. Kinzler
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Andesites are most commonly found at convergent plate margins, where they constitute part of the erupted lavas of volcanic arcs that parallel subduction zones. They are also found less frequently as eruptive products in divergent plate boundaries, in association with midocean ridge basaltic volcanism.
Timothy L. Grove, Rosamond J. Kinzler
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Petrogenesis of oceanic andesites
Journal of Geophysical Research: Solid Earth, 1981The andesites and cogenetic rocks of the intraoceanic island arc systems vary in silica content from 49–50% SiO2 to about 76% SiO2. The most primitive compositions, having contents of about 50% SiO2, are the basaltic andesites, which are primary compositions generated by partial melting of the uppermost section of the subducted oceanic crust.
Sven Maaløe, Tom Svane Petersen
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Petrogenesis of leucogranites in collisional orogens
Special Publications, 2019Leucogranites are a characteristic feature of collisional orogens. Their generation is intimately related to crustal thickening and the active deformation and metamorphism of metapelites.
P. Nabelek
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Journal of Petrology, 2019
Kimberlites are often closely associated, both in time and space, with a wide variety of alkaline ultramafic rock types, yet the question of a genetic relationship between these rock types remains uncertain.
H. Dalton +5 more
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Kimberlites are often closely associated, both in time and space, with a wide variety of alkaline ultramafic rock types, yet the question of a genetic relationship between these rock types remains uncertain.
H. Dalton +5 more
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Geochimica et Cosmochimica Acta, 2003
Abstract The recent discovery of two new angrites, Sahara 99555 and D'Orbigny, has revived interest in this small group of achondrites. We measured trace element abundances in the individual minerals of these two angrites and compared them with the three Antarctic angrites, LEW 86010, LEW 87051 and Asuka 881371.
Christine Floss +4 more
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Abstract The recent discovery of two new angrites, Sahara 99555 and D'Orbigny, has revived interest in this small group of achondrites. We measured trace element abundances in the individual minerals of these two angrites and compared them with the three Antarctic angrites, LEW 86010, LEW 87051 and Asuka 881371.
Christine Floss +4 more
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1991
The development of realistic hypotheses for the petrogenesis of potassic rocks has been hindered, until recently, by the tendency of petrologists to consider all leucite-bearing K-rich rocks as being related. Sufficient geological, geochemical, and mineralogical evidence (see Chapter 2) has now accumulated to show that this assumption is not correct ...
Roger H. Mitchell, Steven C. Bergman
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The development of realistic hypotheses for the petrogenesis of potassic rocks has been hindered, until recently, by the tendency of petrologists to consider all leucite-bearing K-rich rocks as being related. Sufficient geological, geochemical, and mineralogical evidence (see Chapter 2) has now accumulated to show that this assumption is not correct ...
Roger H. Mitchell, Steven C. Bergman
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