Origin and Evolution of Precambrian High-Grade Gneiss Terranes, with Special Emphasis on the Limpopo Complex of Southern Africa

Granite emplacement and the retrograde P-T-fluid evolution of Neoarchean granulites from the Central Zone of the Limpopo Complex
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Published:February 01, 2011
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Jan-Marten Huizenga, Leonid L. Perchuk, Dirk D. van Reenen, Yvonne Flattery, Dimitri A. Varlamov, C. André Smit, Taras V. Gerya, 2011. "Granite emplacement and the retrograde P-T-fluid evolution of Neoarchean granulites from the Central Zone of the Limpopo Complex", Origin and Evolution of Precambrian High-Grade Gneiss Terranes, with Special Emphasis on the Limpopo Complex of Southern Africa, Dirk D. van Reenen, Jan D. Kramers, Stephen McCourt, Leonid L. Perchuk
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Petrological and fluid-inclusion data of high-grade metapelitic gneisses that occur as enclaves and in the immediate surroundings of the 2.612 Ga old Bulai granitoid intrusive are presented in this chapter. The Bulai intrusive is an important time marker in the tectono-metamorphic evolution of the Central Zone of the Limpopo Complex. The host-rock gneisses show one generation of garnet, cordierite, and sillimanite, whereas the enclave gneisses show two different generations of garnet (Grt1,2), cordierite (Crd1,2), and sillimanite (Sil1,2). The first generation defines a gneissic texture, whereas the second generation shows a random mineral orientation. Grt...
- Africa
- aliphatic hydrocarbons
- alkanes
- Archean
- contact metamorphism
- country rocks
- crystal zoning
- decompression
- electron probe data
- emplacement
- facies
- fluid inclusions
- fluid phase
- geologic barometry
- geologic thermometry
- gneisses
- granites
- granulite facies
- granulites
- high temperature
- high-grade metamorphism
- hydrocarbons
- igneous rocks
- inclusions
- Limpopo Belt
- metamorphic rocks
- metamorphism
- metapelite
- metasedimentary rocks
- metasomatism
- methane
- mineral assemblages
- mineral composition
- Neoarchean
- organic compounds
- overprinting
- P-T conditions
- petrography
- plutonic rocks
- Precambrian
- retrograde metamorphism
- tectonics
- temperature
- xenoliths
- Bulai Pluton