Metamorphic evolution of the assemblage tremolite + talc + calcite + dolomite + quartz within a sample of siliceous dolomite from the southern Damara Orogen (Namibia)
Article Abstract:
The southern part of the Damara Orogen is believed to have been uplifted faster than the northern area and the northern area was in tremolite field when fluid infiltration stopped. Distribution of fluorine between tremolite-talc and tremolite-phlogopite pairs indicates that the fluorine amount of tremolite may be acquired in the latter case. A feasible pressure-temperature plot explains the evolution of assemblages of dolomite and metapelites in the area which consist of staurolite and kyanite.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
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Hydrothermal dolomite marbles associated with charnockitic magmatism in the Proterozoic Bamble Shear Belt, south Norway
Article Abstract:
Hydrothermally altered dolomites from the Bamble Shear Belt of south Norway display complex cross-cutting relationships in the locality. Trace and rare earth element analysis showed barium and strontium depletion but enrichment in yttrium, copper, chromium, nickel, scandium and iron in the dolomite marbles relative to the nearby metasedimentary Atangen marble. Samarium and neodynium dating revealed an age of 1175 plus or minus 37 Ma and indicates Sveconorwegian age for the dolomites.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1993
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Experimental determination of the reaction dolomite + 2 coesite = diopside + 2 CO2 to 6 GPa
Article Abstract:
Experimental determination of the reaction dolomite + 2 coesite producing diopside + 2 CO2 involves a multiple-anvil, solid-media apparatus. The reaction is similar to carbonation of eclogites and requires higher pressure for a particular temperature compared to the carbonation reaction for peridotites. There may be a region in the Earth's mantle where carbonated peridotite and carbonate-free eclogite coexist. The experiment uses a pressure range of 3.5 to 6 GPa.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
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