Aluminosilicate melts: structure, composition and temperature
Article Abstract:
The compositional ranges of natural magmatic fluids were analyzed based on the characterization of the anionic structure of aluminosilicate melts exhibiting an intermediated degree of polymerization. In-situ analysis of the aluminosilicate melts indicated the presence of a temperature-dependent configurational heat capacity that was induced by elevations in the ionization potential of the metal cations. Furthermore, the natural magmatic fluids exhibited discontinuous changes in temperature-dependent transport properties.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1997
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Source and tectonic implications of tonalite-trondhjemite magmatism in the Klamath mountains
Article Abstract:
Mantle rocks produce mafic precursor magmas upon melting, which preceded the early cretaceous magmatism in the Klamath mountains. Under optimum tectonic and thermal conditions, mafic crystal rocks change to form low- and high-Al tonalite and trondhjemite magmas. Tonalite-trondhjemite plutons characterize the early cretaceous magmatism in the Klamath mountains. An external heat source derived from basaltic melts is necessary for the partial melting of mantle rocks leading to the origin of tonalite-trondhjemite magmas.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1996
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