Complex quartz growth histories in granite revealed by scanning cathodoluminescence techniques

被引：30

作者：

DLemos, RS ^{[1
]}

Kearsley, AT ^{[1
]}

Pembroke, JW ^{[1
]}

Watt, GR ^{[1
]}

Wright, P ^{[1
]}

机构：

[1] OXFORD INSTRUMENTS GRP PLC,GRP HEADQUARTERS,EYNSHAM OX8 1TH,ENGLAND

来源：

GEOLOGICAL MAGAZINE | 1997年 / 134卷 / 04期

关键词：

D O I：

10.1017/S0016756897007280

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A scanning electron microscope based cathodoluminescence technique utilizing a novel collector system reveals complex internal heterogeneities within granitic quartz grains. The technique overcomes the low intensity and limited variation in cathodoluminescence generated by quartz, which hamper conventional cathodoluminescence analysis. Detailed images of zoning patterns in quartz are comparable to those observed in minerals such as feldspar, and attributed to a combination of progressive growth, boundary layer effects and mineral-melt disequilibria produced during fluctuations in melt composition and temperature during the crystallization interval. We attribute such mineral-melt disequilibria to open system, mixing behaviour in the granite plutons sampled.

引用

页码：549 / 552

页数：4

共 16 条

[1]

ANDERSON AT, 1984, AM MINERAL, V69, P660

[2] ALUMINUM IN QUARTZ AS A GEOTHERMOMETER [J].

DENNEN, WH ;

BLACKBURN, WH ;

QUESADA, A .

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1970, 27 (04) :332-+

[3] MAGMA-MINGLING AND MELT MODIFICATION BETWEEN GRANITIC PIPES AND HOST DIORITE, GUERNSEY, CHANNEL ISLANDS [J].

DLEMOS, RS .

JOURNAL OF THE GEOLOGICAL SOCIETY, 1992, 149 :709-720

[4] A COMMENT ON CRYSTAL SHAPES RESULTING FROM DISSOLUTION IN MAGMAS [J].

DONALDSON, CH .

MINERALOGICAL MAGAZINE, 1985, 49 (350) :129-132

[5]

Finch A. A., 1992, P ROYAL MICROSCOPICA, V27, P179

[6] STRUCTURE OF THE SELF-TRAPPED EXCITON IN QUARTZ [J].

FISHER, AJ ;

HAYES, W ;

STONEHAM, AM .

PHYSICAL REVIEW LETTERS, 1990, 64 (22) :2667-2670

[7]

GORTON NT, 1996, CL RELATED TECHNIQUE

[8]

Hibbard M.J., 1991, DEV PETROLOGY, P431

[9]

Marshall D.J., 1988, Cathodoluminescence of geological materials

[10] OBSERVATIONS OF PLAGIOCLASE ZONING USING INTERFERENCE IMAGING [J].

PEARCE, TH ;

KOLISNIK, AM .

EARTH-SCIENCE REVIEWS, 1990, 29 (1-4) :9-26

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