By Dieter K. Fütterer, Detlef Damaske, Georg Kleinschmidt, Hubert Miller, Franz Tessensohn
Sixty articles prepared in 8 thematic sections check with most up-to-date geological and geophysical result of Antarctic learn. The Precambrian of the East Antarctic protect and its geological background is taken into account in addition to sub-ice topography, geophysics and stratigraphy, sedimentology and geophysics of the encompassing Southern Ocean. specific emphasis is given to the relationship of the Antarctic and the encompassing continents whilst forming a part of Gondwana.
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Additional resources for Antarctica: Contributions to Global Earth Sciences
It had an electrical resistance of 66 kΩ, when the vertical distance against the meta-BIF strike was 60 cm. 210' S, 50°057' E) A single meta-BIF layer (maximum thickness 3 m) extending 20 m in a NW-SE direction, as a convex lens, running into garnet-rich felsic gneiss. Both sides of the layer gradually changed to ultramafic meta-orthopyroxenite with internal folding. The layer continued in a NE direction beyond the ridge. 474' E) To identify the rock type which is causing the large magnetic anomaly, meta-BIF and dolerite dikes were surveyed around the intersections between the lineation of anomaly and outcrops.
806 (SI). Discussion In the general understanding for dating the Napier Complex, a tonalitic precursor of orthogneiss aged at 3 930 ±10 Ma (U-Pb dating of zircon; Black et al. 1986) was metamorphosed at ca. 2 980, 2 840 and 2 480 Ma (Harley and Black 1997). , Shiraishi et al. 1997; Asami et al. 1998). The metamorphosed rocks of the layered gneiss in the Mt. , Motoyoshi and Matsueda 1984) and in intrusive rocks for some mafic gneiss (Ishizuka et al. 1998). The precursor of metamorphosed rocks in the layered gneiss accomplished the sedimentation, intrusion and metamorphism between 3 930 and 2 500 Ma.
1998) reported metamorphosed banded iron formation (metaBIF) in this region based on the geological surveys by the JARE38. We studied the relation between the magnetic anomalies and meta-BIF and to infer the origin of metaBIF from the mineralogical evidence. , Sheraton et al. 1987) and high pressure to 11 kPa (Harley and Hensen 1990). The complex has been known as one of the oldest crusts in the world dated to 3 930 ±10 Ma (Black et al. 1986). The JARE38 carried out geological surveys in the Mt.
Antarctica: Contributions to Global Earth Sciences by Dieter K. Fütterer, Detlef Damaske, Georg Kleinschmidt, Hubert Miller, Franz Tessensohn