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Mesoscopic structures resulting from crystal accumulation and melt movement in granites

Published online by Cambridge University Press:  11 January 2017

R. H. Vernon  and
S. R. Paterson
R. H. Vernon
Affiliation:
Department of Earth and Planetary Sciences and ARC National Key Centre for GEMOC, Macquarie University, Sydney, NSW 2109, Australiaand Department of Earth Sciences, University of Southern California, Los Angeles, CA 0089-0740, USA, e-mail: [email protected]
S. R. Paterson
Affiliation:
Department of Earth Sciences, University of Southern California, Los Angeles, CA 0089-0740, USA, e-mail: [email protected]
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Abstract

Several mesosocopic structures are consistent with mechanical accumulation of crystals and movement of melt in granite magmas, as well as compaction and shear of crystal-melt aggregates, concentrations of microgranitoid enclaves indented by megacrysts, and concentrations of crystals of the same mineral with different crystallisation histories. Evidence for crystal and enclave accumulation is shown clearly in mafic and silicic layered intrusions (MASLI-type granite plutons), for example, the Kameruka Granodiorite, Bega Batholith, south-eastern Australia.

Crystal accumulations with interstitial liquid may become mobile in a magma chamber, owing to instabilities in the host magma caused by seismic and replenishment events or thermal and buoyancy variations. This remobilised material may intrude other parts of the chamber, as well as earlier-formed cumulates and even wall-rocks, as dykes, tubes, troughs and pipes. Marked concentrations of accessory and mafic minerals may also develop in these structures. Interstitial melt may also be extracted from accumulated aggregates, intruding and disrupting the aggregates. Spectacular examples of these various structures are preserved in the Tuolumne Batholith, California. Detailed mechanisms for the formation of many of the structures are not well understood, though the formation of cumulates in vertical layers suggests that sorting and filter pressing during flow and resulting strain of crystal mushes may play important roles.

Keywords

Bega BatholithcompactionK-feldspar megacrystsmagmatic foliationmagmatic instabilitiesschlierenTuolumne Batholith
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 97 , Issue 4 , 2008 , pp. 369 - 381
Copyright
Copyright © The Royal Society of Edinburgh 2008

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References

Abbott, R.N. 1989. Internal structures in part of the South Mountain batholith, Nova Scotia, Canada. Bulletin of the Geological Society of America 101, 1493-506.Google Scholar
Ague, J.J. & Brimhall, G.H. 1988. Magmatic arc asymmetry and distribution of anomalous plutonie belts in the batholiths of California: effects of assimilation, crustal thickness, and depth of crystallization. Bulletin of the Geological Society of America 100, 912-27.2.3.CO;2>CrossRefGoogle Scholar
Anderson, A.T., Davis, A.M. & Lu, F. 2000: Evolution of Bishop Tuff rhyolitic magma based on melt and magnetite inclusions and zoned phenocrysts. Journal of Petrology 41, 449-523.CrossRefGoogle Scholar
Baker, D.R. 1996. Granitic melt viscosities and configurational entropy models for their calculations. American Mineralogist 81, 126-34.CrossRefGoogle Scholar
Baker, D.R. 1998. Granitic melt viscosity and dike formation. Journal of Structural Geology 20, 1395-04.Google Scholar
Baker, D.R. & Vaillancourt, J. 1995. The low viscosities of F + FH2O-bearing granitic melts and implications for melt extraction and transport. Earth and Planetary Science Letters 132, 199-211.Google Scholar
Barbey, P. 1990. Restites in migmatites and autochthonous granites: Their main features and their genesis. In Barbarin, B. & Didier, J. (eds) Enclaves and granite petrology, 479-92. Amsterdam: Elsevier.Google Scholar
Barrière, M. 1981. On curved laminae, graded layers, convection currents and dynamic crystal sorting in the Ploumanac’h (Brittany) subalkaline granite. Contributions to Mineralogy and Petrology 11, 217-24.Google Scholar
Bastin, E.S. 1950. Interpretation of ore textures. Geological Society of America Memoir 45.Google Scholar
Bergantz, G.W. 2000. On the dynamics of magma mixing by reintrusion: implications for pluton assembly processes. Journal of Structural Geology 22, 1297-309.CrossRefGoogle Scholar
Bergantz, G.W. & Ni, J. 1999. A numerical study of sedimentation by dripping instabilities in viscous fluids. International Journal of Multiphase Flow 25, 307-20.CrossRefGoogle Scholar
Bitencourt, M.F. & Nadi, L.V.S. 2004. The role of xenoliths and flow segregation in the genesis and evolution of the Paleoproterozoic Itapema Granite, a crustally derived magma of shoshonitic affinity from southern Brazil. Lithos 73, 1-19.CrossRefGoogle Scholar
Blumenfeld, P. 1983. Le ‘tuilage des mégacristaux,’ un critère d’écoulement rotationnel pour les fluidités des roches magmatiques: application au granite de Barbey-Séroux (Vosges, France). Bulletin de la Société géologique de France 25, 309-18.CrossRefGoogle Scholar
Blumenfeld, P. & Bouchez, J.-L. 1988. Shear criteria in granite and migmatite deformed in the magmatic and solid states. Journal of Structural Geology 10, 361-72.Google Scholar
Chappell, B.W., White, A.J.R. & Wyborn, D. 1987. The importance of residual source material (restite) in granite petrogenesis. Journal of Petrology 28, 1111-38.Google Scholar
Chappell, B.W. & White, A.J.R. 1991. Restite enclaves and the restite model. In Barbarin, B. & Didier, J. (eds) Enclaves and granite petrology, 375-81. Amsterdam: Elsevier.Google Scholar
Chappell, B.W. & Wyborn, D. 2004. Cumulate and cumulative granites and associated rocks. Resource Geology 54, 227-10.CrossRefGoogle Scholar
Clarke, D.B. & Clarke, G.K.C. 1998. Layered granodiorites at Chebucto Head, South Mountain batholith, Nova Scotia. Journal of Structural Geology 20, 1305-24.Google Scholar
Clemens, J.D. 2005a. Granites and granitic magmas: strange phenomena and new perspectives on old problems. Proceedings of the Geologists’ Association 116, 9-16.Google Scholar
Clemens, J.D. 2005b. Rejoinder to ‘Granite and granitic magmas’. Proceedings of the Geologists’ Association 116, 25-9.Google Scholar
Clemens, J.D., Petford, N. & Mawer, C. K. 1997. Ascent mechanisms of granitic magmas: causes and consequences. In Holness, M.B. (ed.) Deformation-enhanced fluid transport in the Earth’s crust and mantle. Mineralogical Society Series 8, 145-72. London: Chapman & Hall.Google Scholar
Clemens, J.D. & Wall, V.J. 1981. Origin and crystallization of some peraluminous (S-type granitic) magmas. Canadian Mineralogist 19, 111-31.Google Scholar
Cloos, E. 1936. Der Sierra Nevada Pluton in Californien. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie Abhandlungen 76(B), 355-50.Google Scholar
Coleman, D.S., Glazner, A.F. & Gray, W. 2002. U-Pb geochronologie evidence for incremental filling of the Tuolumne Intrusive Suite magma chamber. Geological Society of America Abstracts with Programs 34, 269.Google Scholar
Collins, W. J., Wiebe, R.A., Healy, B. & Richards, S.W. 2006. Replenishment, crystal accumulation and floor aggradation in the megacrystic Kameruka Suite, Australia, Journal of Petrology 47, 2073-104.CrossRefGoogle Scholar
Davidson, J.P., De Silva, S.L., Holden, P. & Halliday, A.N. 1990. Small-scale disequilibrium in a magmatic inclusion and its more silicic host. Journal of Geophysical Research 95, 17661-75.Google Scholar
Davidson, J.P. & Tepley, F.J. 1997. Recharge in volcanic systems: evidence from isotope profiles of phenocrysts. Science 275, 826-9.CrossRefGoogle ScholarPubMed
Davidson, J.P., Tepley, F.J. & Knesel, K.M. 1998. Crystal isotope stratigraphy: a method for constraining magma differentiation pathways. EOS 79, 185-93.Google Scholar
Davidson, J. P., Tepley, F.J., Palacz, Z. & Meffan-Main, S. 2001. Magma recharge, contamination and residence times revealed by in situ laser ablation analysis of feldspar in volcanic rocks. Earth and Planetary Science Letters 184, 427-42.Google Scholar
den Tex, E. 1969. Origin of ultramafic rocks, their tectonic setting and history: a contribution to the discussion of the paper ‘The Origin of Ultramafic Rocks’ by P. J. Wyllie. Tectonophysics 7, 457-88.Google Scholar
Dingwell, D.B. 1987. Melt viscosities in the system NaAlSi3O8-H2O-F2O .. | . Geochemical Society Special Paper 1, 423-32.Google Scholar
Dingwell, D.B., Scarfe, C.M. & Cronin, D.J. 1985. The effect of fluorine on viscosities in the system Na2O-Al2O3-SiO2: Implications for phonolites, trachytes and rhyolites. American Mineralogist 70, 80-7.Google Scholar
Dingwell, D.B., Romano, C. & Hess, K.-U. 1996. The effect of water on the viscosity of a haplogranitic melt under P-T-X conditions relevant to silicic volcanism. Contributions to Mineralogy and Petrology 124, 19-28.Google Scholar
Elburg, M. A. & Nicholls, I.A. 1995. Origin of microgranitoid enclaves in the S-type Wilson’s Promontory Batholith, Victoria: evidence for magma mingling. Australian Journal of Earth Sciences 42, 423-35.CrossRefGoogle Scholar
Gagnevin, D., Daly, J.S. & Poli, G. 2003. Isotopie (Sr) and micro-chemical zoning of K-feldspar megacrysts in the Monte Capannne monzogranite (Elba island, Italy): insights into magma dynamics in a young plutonie system. Geophysical Research Abstracts 5, 13, 343.Google Scholar
Gagnevin, D., Daly, J.S., Poli, G. & Morgan, D. 2005a. Microchemi-cal and Sr isotopic investigation of zoned K-feldspar megacrysts: insights into the petrogenesis of a granitic system and disequilibrium crystal growth. Journal of Petrology 46, 1689-724.Google Scholar
Gagnevin, D., Daly, J.S., Waight, T.E., Morgan, D. & Poli, G. 2005b. Pd isotopie zoning of K-feldspar megacrysts determined by laser ablation multi-collector ICP-MS: insights into granite petrogenesis. Geochimica et Cosmochimica Acta 69, 1899-915.Google Scholar
Gilbert, G. K. 1906. Gravitational assemblage in granite. Bulletin of the Geological Society of America 17, 321-8.Google Scholar
Ginibre, C., Wörner, G. & Kronz, A. 2004: Structure and dynamics of the Laacher See magma chamber (Eifel, Germany) from major and trace element zoning in sanidine: a cathodoluminescence and electron microprobe study. Journal of Petrology 45, 2197-223.Google Scholar
Glazner, A.F., Bartley, J.M., Coleman, D.S., Gray, W. & Taylor, R.Z. 2004. Are plutons assembled over millions of years by amalgamation from small magma chambers? GSA Today 14, 4-11.Google Scholar
Guilherme, A.R., Gualda, G.A.R., Cook, D.L., Chopra, R., Qin, L., Anderson, A.T. & Rivers, M. 2004. Fragmentation, nucleation and migration of crystals and bubbles in the Bishop Tuff rhyolitic magma. Transactions of the Royal Society of Edinburgh: Earth Sciences 95, 375-90.Google Scholar
Harper, B.E., Miller, C. F., Koteas, G.C., Cates, N.L., Wiebe, R.A., Lazzareschi, S. & Cribb, J.W. 2004. Granites, dynamic magma chamber processes and pluton construction: the Aztec Wash pluton, Eldorado Mountains, Nevada, USA. Transactions of the Royal Society of Edinburgh: Earth Sciences 95, 277 95.Google Scholar
Higgins, M.D. 1998. Origin of anorthosite by textural coarsening: Quantitative measurements of a natural sequence of textural development. Journal of Petrology 39, 1307-23.CrossRefGoogle Scholar
Irvine, T.N. 1980. Magmatic density currents and cumulus processes. American Journal of Science, 280A, 1-58.Google Scholar
Irvine, T.N. 1982. Terminology for layered intrusions. Journal of Petrology 23, 27-162.Google Scholar
Irvine, T.N. 1987. Layering and related structures in the Duke Island and Skaergaard intrusions: similarities, differences, and origins. In Parsons, I. (ed.) Origins of igneous layering, 185-245. Dordrecht: Reidel.Google Scholar
Jerram, D.A., Cheadle, M.J. & Philpotts, A.R. 2003. Quantifying the building blocks of igneous rocks: are clustered crystal frameworks the foundation? Journal of Petrology 44, 2033-51.Google Scholar
Kerr, R.C. & Lister, J.R. 1991. The effects of shape on crystal settling and on the rheology of magmas. Journal of Geology 99, 457 67CrossRefGoogle Scholar
McCarthy, T. S. & Groves, D. 1979. The Blue Tier Batholith. northeastern Tasmania. Contributions to Mineralogy and Petrology 71, 193-209.Google Scholar
Miller, C.F. & Miller, J.S. 2002. Contrasting stratified plutons exposed in tilt blocks, Eldorado Mountains, Colorado River Rift, NV, USA. Lithos 61, 209-24.Google Scholar
Parsons, I. (ed.) 1987. Origins of igneous layering. Dordrecht: Reidel.Google Scholar
Parsons, I. & Becker, S.M. 1987. Layering, compaction and post- magmatic processes in the Klokken intrusion. In Parsons, I. (ed.) Origins of igneous layering, 29-92. Dordrecht: Reidel.Google Scholar
Parsons, I. & Butterfield, A.W. 1981. Sedimentary features of the Nunarssuit and Klokken syenites S. Greenland. Journal of the Geological Society, London 138, 289-306.Google Scholar
Paterson, S.R., Fowler, T.K., Schmidt, K., Yoshinobu, A. & Yuan, S. 1998. Interpreting magmatic fabric patterns in plutons. Lithos 44, 53-82.CrossRefGoogle Scholar
Paterson, S.R. & Miller, R.B. 1998. Stoped blocks in plutons: paleo-plumb bombs, viscometers, or chronometers? Journal of Structural Geology 20, 1261-72.Google Scholar
Paterson, S.R., Vernon, R.H. & Zák, J. 2005. Mechanical instabilities and accumulations of K-feldspar megacrysts in granitic magma, Tuolumne Intrusive Suite, California, USA. In Köhn, D. (ed.) General Contributions 2005. Journal of the Virtual Explorer 18, Paper 1.Google Scholar
Phillips, E.R. 1968. Some plutonie rocks from a northern part of the New England Batholith. University of Queensland Department ol Geology Papers 6, 159-206.Google Scholar
Philpotts, A.R., Shi, J. & Brustman, C. 1998. Role of plagioclase crystal chains in the differentiation of partly crystallized basaltic magma. Nature 395, 343-6.Google Scholar
Philpotts, A.R., Brustman, C.M., Shi, J., Carlson, W.D. & Denison, C. 1999. Plagioclase-chain networks in slowly cooled basaltic magma. American Mineralogist 84, 1819-29.Google Scholar
Philpotts, A. R. & Asher, P. M. 1994. Magmatic flow-direction indicators in a giant diabase feeder dike, Connecticut. Geology 22, 363-6.Google Scholar
Philpotts, A.R. & Dickson, L.D. 2000. The formation of plagioclase chains during convective transfer in basaltic magma. Nature 406, 59-61.Google Scholar
Philpotts, A.R. & Dickson, L. D. 2002. Millimeter-scale modal layering and the nature of the upper solidification zone in thick flood-basalt flows and other sheets of magma. Journal of Structural Geology 24, 1171-7.CrossRefGoogle Scholar
Reid, J.B., Evans, O. C. & Fates, D.G. 1983. Magma mixing in granitic rocks of the central Sierra Nevada, California. Earth and Planetary Science Letters 66, 243-61.Google Scholar
Reid, J.B., Murray, D. P., Hermes, O. D. & Steig, E.J. 1993. Fractional crystallization in granites of the Sierra Nevada: How important is it? Geology 21, 587.-90Google Scholar
Robinson, D.M. & Miller, C.F. 1999. Record of magma chamber processes preserved in accessory mineral assemblages. American Mineralogist 84, 1346-53.Google Scholar
Sampson, E. 1932. Magmatic chromíte deposits in southern Africa. Economic Geology 27, 113-14.Google Scholar
Shaw, H.R. 1972. Viscosities of magmatic silicate liquids: an empirical method of prediction. American Journal of Science 272, 870-89.Google Scholar
Shelley, D.M. 1985. Determining paleo-flow directions from ground-mass fabrics in the Lyttleton radial dykes, New Zealand. Journal of Volcanology and Geothermal Research 25, 69-79.Google Scholar
Smith, T.E. 1975. Layered granitic rocks at Chebucto Head, Halifax County, Nova Scotia. Canadian Journal of Earth Sciences 12, 456-63.Google Scholar
Spanner, B. G. & Kruhl, J.H. 2002. Syntectonic granites in thrust and strike-slip regimes: the history of the Carmo and Cindacta plutons (southeastern Brazil). Journal of South American Earth Sciences 15, 431-44.Google Scholar
Sparks, R.S.J., Huppert, H.E., Kerr, R.C., McKenzie, D.P. & Tait, S.R. 1985. Postcumulus processes in layered intrusions. Geological Magazine 122, 555-68.CrossRefGoogle Scholar
Thomas, R. 1994. Estimation of the viscosity and the water content of silicate melts from melt inclusion data. European Journal of Mineralogy 6, 511-35.Google Scholar
Tobisch, O. T., McNulty, B.A. & Vernon, R.H. 1997. Microgranitoid enclave swarms in granitic plutons, central Sierra Nevada, California. Lithos 40, 321-39.CrossRefGoogle Scholar
Upton, B.G.J. 1987. Gabbroic, syenogabbroic and syenitic cumulates of the Tugtutôq younger giant dyke complex, South Greenland. In Parsons, 1. (ed.) Origins of igneous layering, 93-123. Dordrecht: Reidel.Google Scholar
Vernon, R.H. 1983. Restite, xenoliths and microgranitoid enclaves in granites (Clarke Memorial Lecture). Journal and Proceedings of the Royal Society of New South Wales 116, 77-103.Google Scholar
Vernon, R.H. 1986. K-feldspar megacrysts in granites - phenocrysts, not porphyroblasts. Earth-Science Reviews 23, 1-63.Google Scholar
Vernon, R.H. 1990. Crystallization and hybridism in microgranitoid enclave magmas: microstructural evidence. Journal of Geophysical Research 95, 17849-59.CrossRefGoogle Scholar
Vernon, R.H. 1991. Interpretation of microstructures of microgranitoid enclaves. In Barbarin, B. & Didier, J. (eds) Enclaves and granite petrology, 277-91. Amsterdam: Elsevier.Google Scholar
Vernon, R.H. 2000. Review of microstructural evidence of magmatic and solid-state flow. Electronic Geosciences 5:2.Google Scholar
Vernon, R.H. 2004. A practical guide to rock microstructure. Cambridge: Cambridge University Press.Google Scholar
Vielzeuf, D. & Holloway, J.R. 1988. Experimental determination of the fluid-absent melting relations in the pelitic system. Consequences for crustal differentiation. Contributions to Mineralogy and Petrology 98, 257-76.Google Scholar
Wahrhaftig, C. 1979. Significance of asymmetric schlieren for crystallization of granites in the Sierra Nevada batholith. Geological Society of America, Abstracts with Programs 11, 133.Google Scholar
Waight, T.E., Maas, R. & Nicholls, I.A. 2000. Fingerprinting feldspar phenocrysts using crystal isotopie composition stratigraphy: implications for crystal transfer and magma mingling in S-type granites. Contributions to Mineralogy and Petrology 139, 227-39.Google Scholar
Wallace, G.S. & Bergantz, G.W. 2002. Wavelet-based correlation (WBC) of crystal populations and magma mixing. Earth and Planetary Science Letters 202, 133-45.CrossRefGoogle Scholar
Wallace, G.S. & Bergantz, G.W. 2004. Constraints on mingling of crystal populations from off-center zoning profiles: a statistical approach. American Mineralogist 89, 64-73.Google Scholar
Wallace, G.S. & Bergantz, G.W. 2005. Reconciling heterogeneity in crystal zoning data: An application of shared characteristic diagrams at Chaos Crags, Lassen Volcanic Center, California. Contributions to Mineralogy and Petrology 149, 98-112.Google Scholar
Wark, D.A., Hildreth, W., Spear, F.S., Cherniak, D.J. & Watson, E.B. 2007. Pre-eruption recharge of the Bishop magma system. Geology 35, 235-8.Google Scholar
Webber, C. E., Candela, P.A., Piccoli, P.M. & Simon, A.C. 2001. Generation of granitic dikes: can texture, mineralogy, and geochemistry be used as guides to determine the mechanisms of diking? Geological Society of America, Abstracts with Programs 57, 138.Google Scholar
Weinberg, R.F., Sial, A.N. & Pessoa, R.R. 2001. Magma flow within the Tavares pluton, northeastern Brazil: Compositional and thermal convection. Bulletin of the Geological Society of America 113, 508-20.Google Scholar
Weinberg, R.F. & Podlachikov, Y.Y. 1994: Diapiric ascent of magmas through power-law crust and mantle. Journal of Geophysical Research B99, 9543-59.Google Scholar
White, A.J.R. & Chappell, B.W. 2004. Pétrographic discrimination of low- and high-temperature I-type granites. Resource Geology 54, 225-6.Google Scholar
Wiebe, R.A. 1974. Coexisting intermediate and basic magmas, Ingonish, Cape Breton Island. Journal of Geology 82, 74-87.Google Scholar
Wiebe, R.A. 1988. Structural and magmatic evolution of a magma chamber: the Newark Island layered intrusion, Nain, Labrador. Journal of Petrology 29, 383-111.Google Scholar
Wiebe, R.A. 1991. Commingling of contrasted magmas and generation of mafic enclaves in granitic rocks. In Barbarin, B. & Didier, J. (eds) Enclaves and granite petrology, 393-402. Amsterdam: Elsevier.Google Scholar
Wiebe, R.A. 1993. The Pleasant Bay layered gabbro-diorite, coastal Maine: Ponding and crystallization of basaltic injections into a silicic magma chamber. Journal of Petrology 34, 461-89.Google Scholar
Wiebe, R.A. 1996. Mafic-silicic layered intrusions: the role of basaltic injections on magmatic processes and the evolution of silicic magma chambers. Transactions of the Royal Society of Edinburgh: Earth Sciences 87, 233-42.Google Scholar
Wiebe, R.A., Blair, K.D., Hawkins, D.P. & Sabine, C.P. 2002. Mafic injections, in situ hybridization, and crystal accumulation in the Pyramid Peak granite, California. Bulletin of the Geological Society of America 114, 909-20.Google Scholar
Wiebe, R.A. & Collins, W.J. 1998: Depositional features and stratigraphie sections in granitic plutons: implications for the emplacement and crystallisation of granitic magmas. Journal of Structural Geology 20, 1273-89.Google Scholar
Wilshire, H.G. 1969. Mineral layering in the Twin Lakes Granodior-ite, Colorado. Geological Society of America Memoir 115, 235-61.Google Scholar
Yoshinobu, A.S. & Hirth, G. 2002. Microstructural and experimental constraints on the rheology of partially molten gabbro beneath ocean spreading centers. Journal of Structural Geology 24, 1101-7.Google Scholar
Zák, J. & Paterson, S.R. 2005. Characteristics of internal contacts in the Tuolumne Batholith, central Sierra Nevada, California (USA): Implications for episodic emplacement and physical processes in a continental arc magma chamber. Bulletin of the Geological Society of America 111 (9-10), 1242-55.Google Scholar
Zellmer, G.F. & Clavero, J.E. 2006. Using trace element correlation patterns to decipher a sanidine crystal growth chronology: An example from Taapaca volcano, central Andes. Journal of Volcanology and Geothermal Research 156, 291-301.Google Scholar