UID:
kobvindex_GFZ027413152
Format:
IX, 302 Seiten
,
Illustrationen, graphische Darstellungen, Karten
ISBN:
0-216-91726-3
,
0-412-00841-6
Note:
1 Introduction
J.R. Ashworth
1.1 Scope of the book
1.2 Definitions
1.3 Migmatites and granites
1.4 Melt-absent migmatization
1.5 Compositions of anatectic leucosomes
1.6 Textures and structures as possible indicators of melt presence
1.7 Estimation of P-T-aₕ₂ₒ conditions
1.8 The Granulite Facies
1.9 Mineral compositions in leucosome and melanosome: the plagioclase problem
1.10 Open and closed systems
1.11 Conclusions
References
2 The significance of experimental studies for the formation of migmatites
W. Johannes
2.1 Introduction
2.2 Experimental studies in the haplogranite system Qz-Or-Ab-H₂O
2.3 Experimental studies in the tonalite system Qz-Ab-An-H₂O
2.4 Experimental studies in the granite system Qz-Or-Ab-An-H₂O
2.5 Plagioclase compositions: observations in nature, experimental findings and
conclusions
2.6 Suggestions for future research
References
3 Phase equilibria in partial melting of pelitic rocks
James A. Grant
3.1 Introduction
3.2 Subsolidus phase equilibria and experimental data
3.3 Partial melting
3.4 Melting at Pₕ₂ₒ = Pₜₒₜₐₗ
3.5 Melting at Pₕ₂ₒ 〈 Pₜₒₜₐₗ
3.6 Vapour-absent melting
3.7 Internal and external control of intensive variables
3.8 Paths through time and space
3.9 Separation of solid, liquid and vapour
3.10 Summary liquidus relations
3.11 Conclusions
References
4 Mass balance in migmatites
Sakiko N. Olsen
4.1 Introduction
4.2 Baltimore Gneiss and Front Range migmatites
4.3 Mass-balance calculations: methods and assumptions
4.4 Mass-balance calculations: results
4.5 Littleton Formation migmatites
4.6 Discussion
References
5 Textures
J.R. Ashworth and E.L. McLellan
5.1 Introduction
5.2 Grain size
5.3 Textures attributed to crystallization from a melt
5.4 Grain shape
5.5 Grain orientation (petrofabric)
5.6 Grain contact relations
5.7 Conclusions
References
6 Migmatite occurrences in New England
Robert J. Tracy
6.1 Introduction
6.2 Tectonic evolution of New England
6.3 Grenville massifs of western New England
6.4 Ordovician migmatites in the western high grade belt
6.5 Migmatites of the eastern Acadian metamorphic high
6.6 Avalonian terrains overprinted in the Alleghenian
6.7 Summary
References
7 Migmatites in the Moines
David Barr
7.1 Introduction
7.2 Early migmatites
7.3 Late migmatites
7.4 Sutherland migmatites
7.5 Conclusions
References
8 Fluid inclusions in migmatites
J. Touret and Sakiko N. Olsen
8.1 Introduction
8.2 Fluid inclusions in migmatites of Bamble, Norway
8.3 Fluid inclusions in the Front Range migmatites
Language:
English
Subjects:
Geography
Keywords:
Lehrbuch
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