Download e-book for iPad: Antarctica: Contributions to Global Earth Sciences by Dieter K. Fütterer, Detlef Damaske, Georg Kleinschmidt,
By Dieter K. Fütterer, Detlef Damaske, Georg Kleinschmidt, Hubert Miller, Franz Tessensohn
Sixty articles prepared in 8 thematic sections seek advice from most up-to-date geological and geophysical result of Antarctic study. The Precambrian of the East Antarctic protect and its geological heritage is taken into account in addition to sub-ice topography, geophysics and stratigraphy, sedimentology and geophysics of the encircling Southern Ocean. specific emphasis is given to the relationship of the Antarctic and the encircling continents while forming a part of Gondwana.
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Extra info for Antarctica: Contributions to Global Earth Sciences
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. Field observation in the Mt. Riiser-Larsen area clarified the existence of widely extended meta-BIF layers.
Granulite facies metamorphism dominates the three westward following papers: Motoyoshi et al. provide ages by electron microprobe analyses of monazite from the Rayner Complex (Enderby Land). They prove that Pan-African (~500 Ma) granulite facies metamorphism overprinted Grenvillian metamorphism (≤1 000 Ma). (These results should continue to Sri Lanka and India). Kawasaki and Motoyoshi support by experiments that retrograde Pan-African metamorphism in the Lützow-Holm Complex took place within the granulite facies.
Ishizuka et al. (1998) suggested that the origin of meta-BIF is in sedimentary rocks, because the layers were sandwiched between pelitic gneiss. They reported mineral assemblages of meta-BIF to medium-coarse grained magnetite and quartz for the main constituents associated with or without clinopyroxene, OPX and Fe-Ti oxide. 1 · Characteristics of Metamorphosed Banded Iron Formation and Its Relation to the Magnetic Anomaly in the Mt. Riiser-Larsen Area, Amundsen Bay The first magnetic and mineralogical studies were carried out for meta-BIF in the Mt.
Antarctica: Contributions to Global Earth Sciences by Dieter K. Fütterer, Detlef Damaske, Georg Kleinschmidt, Hubert Miller, Franz Tessensohn