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Silicates magmas

Christensen JN, DePaolo DJ (1993) Time scales of large volume silicic magma systems Sr isotopic systematics of phenocrysts and glass from the Bishop Tuff, Long Valley, California. Contrib Mineral Petrol 113 100-114... [Pg.170]

Van den Bogaard P, Schimick C (1995) " °Ar/ Ar laser probe age of Bishop Tuff quartz phenocrysts substantiate long-lived silicic magma chamber at Long Valley, United States. Geology 23 759-762 Van Orman J.A., Grove T.L., Shimizu N (1998) Uranium and thorium diffusion in diopside. Earth Planet Sci Lett 160 505-519... [Pg.174]

The SSI (solid-state imaging) camera on board the Galileo spacecraft transmitted impressive high-resolution pictures of Io s volcanic activity. Active lava lakes, lava curtains , calderas, mountains and plateaus can be seen (McEwen et al., 2000). The Hubble telescope detected both S2 gas and SO2 in a SO2 to S2 ratio of 1 4 in the smoke trail of the volcano Pele. This value suggests an equilibrium between silicate magmas in the neighbourhood of the quartz-fayalite-magnetite buffer (see Sect. 7.2.2). [Pg.49]

Annen, C., Blundy, J.D., Sparks, R.S.J. 2006. The genesis of intermediate and silicic magmas in deep crustal hot zones. Journal of Petrology, 47, 505-539. [Pg.118]

Christiansen E.H. Keith, J.D. 1996. Trace element systematics in silicic magmas A metallogenic perspective. In Wyman, D.A. (ed). Trace Element Geochemistry of Volcanic Rocks Applications for Massive Sulphide Exploration Geological Association of Canada, Short Course Notes, 12, 115-151. [Pg.558]

Muehlenbachs K, Byerly G (1982) 0 enrichment of silicic magmas caused by crystal fractionation at the Galapagos Spreading Center. Contr Miner Petrol 79 76-79 Muehlenbachs K, Qayton RN (1972) Oxygen isotope studies of fresh and weathered submarine basalts. Can J Earth Sci 9 471 79... [Pg.260]

Bindeman I.N. (2003) Crystal sizes in evolving silicic magma chambers. Geology 31, 367-370. [Pg.595]

Magmatic achondrites - crystallized from silicate magma Aubrites... [Pg.175]

Petrological and geochemical signatures of mafic enclaves match quite closely those of the Tuscany mafic rocks. However, some of the observed geochemical characteristics may have been modified by interaction with host silicic magmas and could not represent pristine compositions of mafic melts. [Pg.38]

Crustal melting, probably triggered by the emplacement of mafic melts, with generation of peraluminous, highly silicic magmas which were emplaced either as unmodified melts or mixed with different... [Pg.42]

Complex (20 and 15 ka), sited north of Primordial Vulcano, is the remnant of a stratovolcano with a central caldera (Fossa Caldera), mainly formed by latitic, trachytic and rhyolitic lava flows, domes, and pyroclastic rocks. Fossa Caldera products were erupted between 15 and 8 ka by pyroclastic and effusive eruptions of shoshonitic intermediate to silicic magmas. Cono della Fossa is a 391 m high active edifice that rises at the center of the Fossa Caldera it was formed in the last 6000 years by several silicic pyroclastic eruptions and a few lava effusions. Vulcanello is a shield made of mafic potassic lavas showing a KS affinity, with central trachytic pyroclastic cones. Vulcanello was formed as a new island probably about one thousand years ago (magnetostratigrafic age by Tanguy, personal communication) sand accumulation in the isthmus area finally connected Vulcanello with the main island. [Pg.191]

Bergen van MJ, Barton M (1984) Complex interaction of aluminous metasedi-mentary xenoliths and siliceous magma an example from Mt. Amiata (Central Italy). Contrib Mineral Petrol 86 374-385... [Pg.326]

Calanchi N, De Rosa R, Mazzuoli R, Rossi L, Santacroce R, Ventura G (1993) Silicic magma entering a basaltic magma chamber eruptive dynamics and magma mixing an example from Salina (Aeolian Islands, Southern Thyrrenian Sea). Bull Volcanol 55 504-522... [Pg.329]

Nash, W.P. Perkins, M.E., Christensen, J.N., Lee, D-C., and Halliday, A.N. (1996) Temporal variation in l43Nd/,44Nd and, 76HF/I77Hf in silicic magmas of the Yellowstone hotspot. Trans. Amer. Geophys. Un. 77, F823. [Pg.326]

Carmichael I. S. E. (1991) The redox state of basic and silicic magmas a reflection of their source regions Contrib. Mineral. Petrol. 106, 129-141. [Pg.1145]

Smith R. D., Cameron K. L., McDowell F. W., Niemeyer S., and Sampson D. E. (1996) Generation of voluminous silicic magmas and formation of mid-Cenozoic emst beneath north-central Mexico evidence from ignimbrites, associated... [Pg.1328]

Dingwell D. (1998) Recent experimental progress in the physical description of silicic magma relevant to explosive volcanism. In The Physics of Explosive Volcanic Eruptions. Geology Society of Lxtndon Special Publication 145 (eds. J. S. Gilbert and R. S. J. Sparks). Geological Society of Lxtndon, pp. 9-26. [Pg.1425]

See other pages where Silicates magmas is mentioned: [Pg.114]    [Pg.116]    [Pg.123]    [Pg.128]    [Pg.135]    [Pg.151]    [Pg.152]    [Pg.161]    [Pg.167]    [Pg.167]    [Pg.168]    [Pg.168]    [Pg.45]    [Pg.63]    [Pg.174]    [Pg.187]    [Pg.402]    [Pg.38]    [Pg.39]    [Pg.47]    [Pg.63]    [Pg.234]    [Pg.235]    [Pg.425]    [Pg.6]    [Pg.479]    [Pg.1395]    [Pg.1395]    [Pg.1396]    [Pg.1402]    [Pg.1430]    [Pg.1436]    [Pg.1438]   
See also in sourсe #XX -- [ Pg.52 , Pg.63 ]



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