Authors / CoAuthors
Sheraton, J.W. | England, R.N. | Ellis, D.J.
Abstract
Highly magnesian (mg about 98) granulites, containing sapphirine, enstatite, spinel, phlogopite, and cordierite, occur as xenoliths in Precambrian orthopyroxene-bearing granitic rocks at Mawson and Gage Ridge, East Antarctica. At Mawson, a marginal reaction zone is considerably enriched in Fe, K, and volatiles H2O and F, largely at the expense of Mg, with the development of sapphirine + phlogopite-rich assemblages. At gage ridge, marginal gain of Fe and to some extent Ca and Na, and loss of Mg are indicated, but there was no significant gain of K or H2O, possibly because very low P(H2O) did not allow crystallisation of phlogopite. (Auth.)
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document
eCat Id
81123
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- GA PublicationJournal
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- AAT
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
1982-01-01T00:00:00
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geoscientificInformation
Series Information
BMR Journal of Australian Geology and Geophysics 7:4:269-273
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Unknown
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Extents
[-69.0, -65.0, 50.0, 65.0]
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