Structure and metamorphism of the granitic basement around Antananarivo: a key to the Pan-African history of central Madagascar and its Gondwana connections
Article Abstract:
Research is presented concerning the polyphase imprint which was gained by Madagascar's Precambrian basement during pan-african orogeny. The formation of midcrust stratoid alkaline granites is discussed.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 2000
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Age and tectonic evolution of Neoproterozoic ductile shear zones in southwestern Madagascar, with implications for Gondwana studies
Article Abstract:
Research is presented concerning the use of petrogenesis, field observations and U/Pb analysis of monazites, rutiles, zircons and sphenes to investigate 4 episodes of metamorphism and deformation in Precambrian terrain in Madagascar.
Publication Name: Tectonics
Subject: Earth sciences
ISSN: 0278-7407
Year: 2001
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Geology, petrology and isotope geochemistry of massif-type anorthosites from southwest Madagascar
Article Abstract:
A study was conducted to analyze the geology, petrology and isotope geochemistry of massif-type anorthosites from southwestern Madagascar. Known as an important component of Precambrian terranes, anorthosites support low color index and deformation effects. They also feature metamorphosed and granulate facies. In addition, anorthosites bodies in Madagascar lack the coeval, spatially associated, silicic plutonic rocks of granitic, charnockitic and manggeritic character.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1998
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- Abstracts: Comment on "Origin of the Chichibu Sea, Japan: Middle Paleozoic to Early Mesozoic Plate Construction in the Northern Margin of the Gondwana Continent." (response to article by S. Otoh, S. Yamakita, and S. Yanai, Tectonics, vol. 9, p. 423, 1990)
- Abstracts: Ductile and brittle shortening, extension-parallel folds and maintenance of crustal thickness in the central Aegean (Cyclades, Greece)
- Abstracts: Correction to "Collission tectonics in the Swiss Alps: insight from geodynamic modeling" by O.A. Pfiffner et al