Precambrian Para-Gneisses of Southern Eyre Peninsula, South Australia
- 1 July 1921
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 58 (7), 305-312
- https://doi.org/10.1017/s0016756800089081
Abstract
SUMMARY 1. Garnet gneisses of sedimentary origin are described from the oldest group of sediments recognized in Southern Eyre Peninsula, South Australia. The high-grade metamorphism which these rocks have undergone has resulted in the development of felspar, garnet (almandine), sillimanite, and green spinel. 2. The mineralogical association of these constituents is described, and their genetic relations are discussed. 3. A sedimentary origin of these gneisses is attested by their interbanding with undoubted sediments, their mineralogical composition, and lastly by chemical analysis. 4. In the garnet gneisses developed in the Grenville series of North America, notably those of the Adirondack region, and in the province of Quebec, these para-gneisses find their most striking analogues.Keywords
This publication has 2 references indexed in Scilit:
- The natural history of Cordierite and its associatesProceedings of the Geologists' Association, 1899
- A further contribution to our knowledge of the LaurentianAmerican Journal of Science, 1895