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Fluid-inclusion studies of regionally extensive epigenetic dolomites, Bonneterre Dolomite (Cambrian), southeast Missouri: evidence of multiple fluids during dolomitization and lead-zinc mineralization

Article Abstract:

The conclusions reached by Shelton et al on the thermal regime, sources of fluids and mineralization type of the regionally extensive epigenetic dolomites of southeast Missouri is criticised. Shelton et al did not consider the necking of fluid inclusion. In reply, the original conclusions are retained and the contention of a regional thermal gradient in the Ozark Region Mississippi Valley-Type deposits, based from fluid-inclusion evidence, is negated. A pulsing basinal brine is used to explain the temperature and composition of the inclusion.

Author: Leach, D.L., Rowan, E.L., Shelton, Kevin L., Bauer, Rita M., Gregg, Jay M.
Publisher: Geological Society of America, Inc.
Publication Name: The Geological Society of America Bulletin
Subject: Earth sciences
ISSN: 0016-7606
Year: 1993
Natural history, Composition, Missouri, Analytic geochemistry, Dolomite

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High temperature stability limit of phase egg, AlSiO(sub 3)(OH)

Article Abstract:

Using a high pressure apparatus, researchers investigate the effects of high temperature on the stability of a phase egg. Topics include how high temperatures increase Al(2)O(3) content in stishovite, and the ability of phase egg and topaz-OH to transport water to the earth mantle's transition zone.

Author: Ono, Shigeaki
Publisher: Springer
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1999
Statistical Data Included, Analysis, Earth, Mantle (Geology), Minerals, Minerals (Geology), Sediments (Geology), High temperature chemistry

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