Results 131 to 140 of about 5,875 (167)
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HIGH TEMPERATURE WETAMORPHIS AND ZRUSTAL ANATEXIS
Terra Nova, 1991L990, £55.00 (hbk) ISBN 00 44457219.
null Ashworth, null Brown
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Contrasting behaviour of boron during crustal anatexis
Lithos, 2001The study of volatile elements in crustal anatectic terranes may provide information about the role of fluid flow and fluid pathways during high temperature metamorphism. We have studied the distribution of Li and B in two migmatitic areas: the . Pena Negra Anatectic Complex central Spain and the migmatites and leucogranites associated with the Ronda ...
A Acosta-Vigil +3 more
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Crustal anatexis: An experimental review
Tectonophysics, 1977Review of experimental studies in synthetic systems An—Ab—Or—Qz—H_2O and K_2O—Al_2O_3—SiO_2—H_2O illustrates the dominance of feldspar—quartz assemblages in crustal anatectic processes, and the role of hydrous minerals such as muscovite. H_2O-undersaturated liquids can exist with quartz—feldspar assemblages through hundreds of degrees with little ...
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Some remarks on contact anatexis
Bulletin Volcanologique, 1970The chemical variability of the products of contact-anatexis, completely different from the normal trend of magmatic differentiation, may be explained by the quantitative variation of gaseous transfer, according to the state of the basaltic magma which may be pyromagma or hypomagma at the contact with the surrounding sialic rocks.
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Trace element fractionation during anatexis
Geochimica et Cosmochimica Acta, 1970Abstract The theoretical basis of trace element fractionation presented in a paper by P. W. Gast (1968) can be developed in a more flexible algebraic form, which is here described and illustrated.
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Crustal anatexis during the influx of mantle volatiles
Lithos, 1993Abstract Many data show that large masses of silicic magma can be formed by crustal anatexis under the influence of volatiles, possibly enriched in primary water derived from a mantle source. In the present paper, a model of crustal anatexis, accompanied by a limited influx of volatiles is suggested.
B.A. Litvinovsky, Yu.Yu. Podladchikov
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Paleogene anatexis along the Gulf of Alaska margin
Geology, 1979Early Tertiary plutons of biotite tonalite, granodiorite, and granite are found in a curvilinear 2,000-km-long belt along the margin of the Gulf of Alaska. These plutons intrude flyschoid rocks that were accreted to the continental margin during Late Cretaceous and/or early Tertiary time.
Travis Hudson +2 more
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Oligocene crustal anatexis in the Tethyan Himalaya, southern Tibet
Lithos, 2016Abstract Recent studies in the Xiaru and Malashan gneiss dome of the Tethyan Himalaya, southern Tibet identify that Xiaru and Paiku tourmaline-bearing leucogranite dike formed at ~ 28–29 Ma. Together with ~ 28 Ma Kuday garnet-bearing leucogranites, it is demonstrated that the Himalayan orogenic belt experienced a major episode of crustal melting in ...
Li-E Gao +5 more
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Experimental anatexis and genesis of migmatites: A reply
Contributions to Mineralogy and Petrology, 1966Recentlyvon Platen applied the results of his laboratory experiments to a migmatite studied byHarme. Some comments are presented upon that re-interpretation.
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Anatexis, Migmatitbildung und Palingenese granitischer Magmen
1965Metamorphe Gesteine der hochgradigen Amphibolitfazies sind eng vergesellschaftet mit Migmatiten. Diese generelle Gelandebeobachtung beschreibt Read (1957) folgendermasen: „One of the most firmly established facts in metamorphic geology is the close association in the field of highest-grade metamorphic rocks and migmatites.“
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