Electronic Resource
Springer
Contributions to mineralogy and petrology
116 (1994), S. 473-485
ISSN:
1432-0967
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract The tuffs and lava of the Igwisi Hills are the youngest magmatic rocks on the Tanzania Craton. They consist of small xenoliths of phlogopite-calcite-garnet lherzolite in an olivine-calcite-dolomite-apatite-perovskite-spinel-serpentine matrix. Their mineralogy, major element chemistry and isotope chemistry indicate strong affinities with kimberlite, particularly the calcite-rich kimberlites of the Benfontein Sills, South Africa. As such, the Igwisi Hills are the youngest example of kimberlite magmatism. The magma formed by small degrees of melting of a carbonate-apatite-bearing peridotite source at depths in excess of 110 km.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00310913
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