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ENGVIK, A. K., BINGEN, B. (2017) Granulite-facies metamorphism of the Palaeoproterozoic – early Palaeozoic gneiss domains of NE Mozambique, East African Orogen. Geological Magazine, 154 (3) 491-515 doi:10.1017/s0016756816000145

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Reference TypeJournal (article/letter/editorial)
TitleGranulite-facies metamorphism of the Palaeoproterozoic – early Palaeozoic gneiss domains of NE Mozambique, East African Orogen
JournalGeological Magazine
AuthorsENGVIK, A. K.Author
BINGEN, B.Author
Year2017 (May)Volume154
Page(s)491-515Issue3
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756816000145Search in ResearchGate
Mindat Ref. ID261131Long-form Identifiermindat:1:5:261131:4
GUID81b9eba9-4a02-48eb-b5d8-d0b009e4802c
Full ReferenceENGVIK, A. K., BINGEN, B. (2017) Granulite-facies metamorphism of the Palaeoproterozoic – early Palaeozoic gneiss domains of NE Mozambique, East African Orogen. Geological Magazine, 154 (3) 491-515 doi:10.1017/s0016756816000145
Plain TextENGVIK, A. K., BINGEN, B. (2017) Granulite-facies metamorphism of the Palaeoproterozoic – early Palaeozoic gneiss domains of NE Mozambique, East African Orogen. Geological Magazine, 154 (3) 491-515 doi:10.1017/s0016756816000145
In(2017, May) Geological Magazine Vol. 154 (3) Cambridge University Press (CUP)
Abstract/NotesAbstractGranulite-facies metamorphism recorded in NE Mozambique is attributed to three main tectonothermal events, covering more than 1400 Ma from Palaeoproterozoic – early Palaeozoic time. (1) Usagaran–Ubendian high-grade metamorphism of Palaeoproterozoic age is documented in the Ponta Messuli Complex by Grt-Sil-Crd-bearing metapelites, estimated to pressure (P) 0.75 ± 0.08 GPa and temperature (T) 765 ± 96°C. The post-peak P-T path is characterized by decompression followed by near-isobaric cooling. (2) Irumidian medium- to high-pressure granulite-facies metamorphism is evident in the Unango and Marrupa complexes of late Mesoproterozoic – early Neoproterozoic age. High-pressure granulite-facies is documented by Grt-Cpx-Pl-Rt-bearing mafic granulites in the northwestern part of the Unango Complex, with peak conditions up to P = 1.5 GPa and T = 850°C. Medium-pressure granulite-facies conditions recording P of c. 1.15 GPa and T of 875°C are documented by Grt-Opx-Cpx-Pl assemblage in mafic granulites and charnockitic gneisses of the central part of the Unango Complex. (3) Tectonothermal activity during the Ediacaran–Cambrian Kuunga Orogeny is recorded in the Mesoproterozoic gneiss complexes as amphibolite facies to medium-pressure granulite-facies metamorphism. Granulite facies are documented by Grt-Opx-Cpx-Pl-bearing mafic granulites and charnockitic gneisses, reporting P = 0.99 ± 13 GPa at T = 738 ± 84°C in the Unango Complex and P = 0.92 ± 18 GPa at T = 841 ± 135°C in the Marrupa Complex. This metamorphism is attributed to crustal thickening related to overriding of the Cabo Delgado Nappe Complex, and shorthening along the Lurio Belt during the early Palaeozoic Kuunga Orogeny.

References Listed

These are the references the publisher has listed as being connected to the article. Please check the article itself for the full list of references which may differ. Not all references are currently linkable within the Digital Library.

Grantham (1995) Precambrian Research The tectonothermal evolution of Kirwanveggan-H.U. Sverdrupfjella areas, Dronning Maud Land, Antarctica 75, 209
Braun (2003) Proterozoic East Gondwana: Supercontinent Assembly and Breakup , 169
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Andreoli (1990) Stable Isotopes and Fluid Processes in Mineralization , 121
Mänttäri (2008) GTK Consortium Geological Surveys in Mozambique 2002–2007 , 81
Ito (1971) The Structure and Physical Properties of the Earth's Crust , 303
Norconsult Consortium 2007. Mineral resources management capacity building project, Republic of Mozambique; Component 2: Geological infrastructure development project, Geological Mapping Lot 1; Sheet explanation: 32 sheets; scale: 1/250000, 778 pp. + annexes. Credit No. NDF335, Report No. B6f, National Directorate of Geology, Republic of Mozambique.
Harley (2003) Proterozoic East Gondwana: Supercontinent Assembly and Breakup , 203
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Thost (1994) Petrology The geology of a rapidly uplifted medium and low pressure granulite facies terrane of Pan-African age: the Bolingen Islands, Prydz Bay, Eastern Antarctica 2, 293
Unrug (1997) GSA Today Rodinia to Gondwana: the geodynamic map of Gondwana supercontinent assembly 7, 1
Holmes (1951) Proceedings of the 18th International Geological Congress , 254
Spear (1993) Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths


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