Oldest known terrestrial anorthosite at Mount Narryer, Western Australia
作者： John S. Myers
DOI: 10.1016/0301-9268(88)90030-7
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摘要: Abstract Fragments of a deformed and metamorphosed, layered anorthosite-gabbro-ultramafic intrusion called the Manfred Complex occur as inclusions in ∼ 3650 3400 Ma old banded granite gneisses at Mount Narryer Western Gneiss Terrain Yilgarn Block. The complex is typical world-wide group Archaean anorthosites, characterized by very large primary grain sizes equidimensional calcic plagioclase. This first recorded occurrence these anorthosites Australia. Pb-Pb Sm-Nd whole-rock, U-Pb zircon geochronology given accompanying two papers (Fletcher, I.R., Rosman, K.J.R. Libby, W.G., 1988. Precambrian Res., 38: 343–354; Kinny, P.D., Williams, I.S., Froude, D.O., Ireland, T.R. Compston, W., 325–341) shows that about 3730 old. It therefore oldest known terrestrial anorthosite one rock units on Earth.
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E. Craig Simmons, Gilbert N. Hanson, S.B. Lumbers, Geochemistry of the shawmere anorthosite complex, kapuskasing structural zone, Ontario Precambrian Research. ,vol. 11, pp. 43- 71 ,(1980) , 10.1016/0301-9268(80)90080-7
J. R. De Laeter, I. R. Fletcher, K. J. R. Rosman, I. R. Williams, R. D. Gee, W. G. Libby, Early Archaean gneisses from the Yilgarn Block, Western Australia Nature. ,vol. 292, pp. 322- 324 ,(1981) , 10.1038/292322A0
J. R. De Laeter, I. R. Fletcher, M. J. Bickle, J. S. Myers, W. G. Libby, I. R. Williams, Rb‐Sr, Sm‐Nd and Pb‐Pb geochronology of ancient gneisses from Mt Narryer, Western Australia Australian Journal of Earth Sciences. ,vol. 32, pp. 349- 358 ,(1985) , 10.1080/08120098508729338
R. G. Park, Arthur Escher, W. Stuart Watt, Geology of Greenland The Geographical Journal. ,vol. 144, pp. 327- ,(1978) , 10.2307/634173
John S. Myers, Ian R. Williams, Early Precambrian crustal evolution at Mount Narryer, Western Australia Precambrian Research. ,vol. 27, pp. 153- 163 ,(1985) , 10.1016/0301-9268(85)90010-5
I. R. Fletcher, S. A. Wilde, K. J. R. Rosman, Sm‐Nd model ages across the margins of the Archaean Yilgarn Block, Western Australia — III. The western margin Australian Journal of Earth Sciences. ,vol. 32, pp. 73- 82 ,(1985) , 10.1080/08120098508729314
L.D. Ashwal, J.L. Wooden, W.C. Phinney, D.A. Morrison, Sm-Nd and Rb-Sr isotope systematics of an Archean anorthosite and related rocks from the Superior Province of the Canadian Shield Earth and Planetary Science Letters. ,vol. 74, pp. 338- 346 ,(1985) , 10.1016/S0012-821X(85)80005-4
BRIAN F. WINDLEY, Anorthosites in the early crust of the Earth and on the Moon. Nature. ,vol. 226, pp. 333- 335 ,(1970) , 10.1038/226333B0
L. D. Ashwal, D. A. Morrison, W. C. Phinney, J. Wood, Origin of Archean anorthosites: Evidence from the Bad Vermilion Lake anorthosite complex, Ontario Contributions to Mineralogy and Petrology. ,vol. 82, pp. 259- 273 ,(1983) , 10.1007/BF01166620
W. Compston, R. T. Pidgeon, Jack Hills, evidence of more very old detrital zircons in Western Australia Nature. ,vol. 321, pp. 766- 769 ,(1986) , 10.1038/321766A0