The Mud Tank carbonatite complex, central Australia - an example of metasomatism at mid-crustal levels
Article Abstract:
Metasomatism at mid-crustal levels was investigated in the Mud Tank carbonatite complex in central Australia through petrographic analysis and mapping of the area. The complex consists of a series of lenses on a five kilometer segment of a ductile shear zone. The lenses were composed of a carbonate core bounded by mica-rich areas of granitoid cataclasites, mafic granulites and lenses of aluminous rocks. Amphiboles and pyroxenes were also found in the Mud Tank. Thermobarometry of the minerals indicates that the carbonatite complex was formed at more than 650 Celsius under high water and fluorine regimes.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1992
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Melting and metasomatism in the continental lithosphere: laser ablation ICPMS analysis of minerals in spinel lherzolites from eastern Australia
Article Abstract:
Research was conducted to analyze the major and trace element compositions of olivine, low-Ca pyroxene, diopside and spinel in a suite of protogranular lherzolite xenoliths from southeastern Australia. An electron microscope and a laser ablation ICMPS were used to analyze the element compositions. Results indicate that the lherzolites were entrained from about 35 km within the lithosphere and that the melt depletion happened during the middle and late Proterozoic.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1998
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A new Italian carbonatite occurrence at Cupaello (Rieti) and its genetic significance
Article Abstract:
A calcium-carbonatite liquid was present in the primary silicate melts of the kamafugite lava, Cupaello, Italy. The carbonatite forms a part of the Late Pleistocene Umbria-Latium ultra-alkaline district (ULUD). The rocks are similar to those in Africa, which formed from like sources and tectonic conditions. Mineralogical and petrological data for the rocks are given.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
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