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I- and S-type granites in the Lachlan Fold Belt

Published online by Cambridge University Press:  03 November 2011

B. W. Chappell  and
A. J. R. White
B. W. Chappell
Affiliation:
B. W. Chappell and A. J. R. White, Department of Geology, The Australian National University, Canberra ACT 2601, Australia
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Abstract

Granites and related volcanic rocks of the Lachlan Fold Belt can be grouped into suites using chemical and petrographic data. The distinctive characteristics of suites reflect source-rock features. The first-order subdivision within the suites is between those derived from igneous and from sedimentary source rocks, the I- and S-types. Differences between the two types of source rocks and their derived granites are due to the sedimentary source material having been previously weathered at the Earth's surface. Chemically, the S-type granites are lower in Na, Ca, Sr and Fe3+/Fe2+, and higher in Cr and Ni. As a consequence, the S-types are always peraluminous and contain Al-rich minerals. A little over 50% of the I-type granites are metaluminous and these more mafic rocks contain hornblende. In the absence of associated mafic rocks, the more felsic and slightly peraluminous I-type granites may be difficult to distinguish from felsic S-type granites. This overlap in composition is to be expected and results from the restricted chemical composition of the lowest temperature felsic melts. The compositions of more mafic I- and S-type granites diverge, as a result of the incorporation of more mafic components from the source, either as restite or a component of higher temperature melt. There is no overlap in composition between the most mafic I- and S-type granites, whose compositions are closest to those of their respective source rocks. Likewise, the enclaves present in the more mafic granites have compositions reflecting those of their host rocks, and probably in most cases, the source rocks.

S-type granites have higher δ18O values and more evolved Sr and Nd isotopic compositions, although the radiogenic isotope compositions overlap with I-types. Although the isotopic compositions lie close to a mixing curve, it is thought that the amount of mixing in the source rocks was restricted, and occurred prior to partial melting. I-type granites are thought to have been derived from deep crust formed by underplating and thus are infracrustal, in contrast to the supracrustal S-type source rocks.

Crystallisation of feldspars from felsic granite melts leads to distinctive changes in the trace element compositions of more evolved I- and S-type granites. Most notably, P increases in abundance with fractionation of crystals from the more strongly peraluminous S-type felsic melts, while it decreases in abundance in the analogous, but weakly peraluminous, I-type melts.

Keywords

aluminium saturationfractionatedgraniteinfracrustalI-typeLachlan Fold Beltmetaluminoussource rocksS-typesupracrustal
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 83 , Issue 1-2: Second Hutton Symposium: The Origin of Granites and Related Rocks , 1992 , pp. 1 - 26
Copyright
Copyright © Royal Society of Edinburgh 1992

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References

Avila-Salinas, W. A. 1990. Tin-bearing granites from the Cordillera Real, Bolivia; a petrological and geochemical review. GEOL SOC AMERICA SPEC PAP 241, 145–59.CrossRefGoogle Scholar
Baker, G. 1940. Cordierite granite from Terip Terip, Victoria. AM MINERAL 25, 543–548.Google Scholar
Ball, C. W., Dallwitz, W. B. & Noakes, L. C. 1948. Geological reconnaissance of the proposed hydro-electric works in Kosciusko area between Waste Point and Khancoban. REC BMR GEOL GEOPHYS 1948/7.Google Scholar
Barbarin, B. 1990. Granitoids: main petrogenetic classifications in relation to origin and tectonic setting. GEOL J 25, 227–38.CrossRefGoogle Scholar
Bateman, P. C., Clark, L. D., Huber, N. K., Moore, J. G. & Rinehart, C. D. 1963. The Sierra Nevada Batholith: a synthesis of recent work across the central part. US GEOL SURV PROF PAP 414D.CrossRefGoogle Scholar
Blevin, P. L. & Chappell, B. W. 1992. Some controls on granite metallogeny: an eastern Australian perspective. TRANS R SOC EDINBURGH EARTH SCI 83, 305–16.Google Scholar
Browne, W. R. 1929. An outline of the history of igneous activity in New South Wales till the close of the Palaeozoic Era. PROC LINN SOC NSW 54, 9–34.Google Scholar
Browne, W. R. 1931. Notes on bathyliths and some of their implications. J R SOC NSW 65, 114–16.Google Scholar
Burnham, C. W. 1992. Calculated melt and restite compositions of some Australian granites. TRANS R SOC EDINBURGH EARTH SCI 83, 387–97.Google Scholar
Champion, D. C. & Chappell, B. W. 1992. Petrogenesis of felsic I-type granites: an example from northern Queensland. TRANS R SOC EDINBURGH EARTH SCI 83, 115–26.Google Scholar
Chappell, B. W. 1966. Petrogenesis of the granites at Moonbi, New South Wales. Unpublished PhD thesis, The Australian National University.Google Scholar
Chappell, B. W. 1978. Granitoids from the Moonbi district, New England Batholith, eastern Australia. J GEOL SOC AUST 25, 267–83.CrossRefGoogle Scholar
Chappell, B. W. 1979. Granites as images of their source rocks. GEOL SOC AMERICA PROG ABST 11, 400.Google Scholar
Chappell, B. W. 1984. Source rocks of I- and S-type granites in the Lachlan Fold Belt, southeastern Australia. PHILOS TRANS R SOC LONDON A310, 693–707.Google Scholar
Chappell, B. W. & Hine, R. (in prep.) Geochemistry and petrogenesis of the Cornubian Batholith.Google Scholar
Chappell, B. W. & McCulloch, M. T. 1990. Possible mixed source rocks in the Bega Batholith: constraints provided by combined chemical and isotopic studies. ICOG-7, ABST GEOL SOC AUST 27, 17.Google Scholar
Chappell, B. W. & Stephens, W. E. 1988. Origin of infracrustal (I-type) granite magmas. TRANS R SOC EDINBURGH EARTH SCI 79, 71–86.Google Scholar
Chappell, B. W. & White, A. J. R. 1974. Two contrasting granite types. PACIFIC GEOL 8, 173–174.Google Scholar
Chappell, B. W. & White, A. J. R. 1976. Plutonic rocks of the Lachlan Mobile Zone. International Geological Congress 25, Field Guide Excursion 13C.Google Scholar
Chappell, B. W. & White, A. J. R. 1984. I- and S-type granites in the Lachlan Fold Belt, southeastern Australia. In Keqin, Xu & Guangchi, Tu (eds) Geology of granites and their metallogenic relations, 87–101. Beijing: Science Press.Google Scholar
Chappell, B. W. & White, A. J. R. 1991. Restite enclaves and the restite model. In Didier, J. & Barbarin, B. (eds) Enclaves and Granite Petrology, 375–81. Amsterdam: Elsevier.Google Scholar
Chappell, B. W., White, A. J. R. & Wyborn, D. 1987. The importance of residual source material (restite) in granite petrogenesis. J PETROL 28, 1111–38.CrossRefGoogle Scholar
Chappell, B. W., White, A. J. R. & Hine, R. 1988. Granite provinces and basement terranes in the Lachlan Fold Belt, southeastern Australia. AUST J EARTH SCI 35, 505–21.CrossRefGoogle Scholar
Chappell, B. W., Williams, I. S., White, A. J. R. & McCulloch, M. T., 1990. Granites of the Lachlan Fold Belt. ICOG 7 Field Guide Excursion A-2. REC BMR GEOL GEOPHYS 1990/48.Google Scholar
Chappell, B. W., English, P. M., King, P. L., White, A. J. R. & Wyborn, D. 1991. Granites and related rocks of the Lachlan Fold Belt (1:1 250 000 scale map). Canberra: BMR Geol. Geophys.Google Scholar
Chappell, B. W., Wyborn, L. A. I., White, A. J. R., Burnham, C. W. & Wyborn, D. (in prep.) S-type granites of the Wagga Basement Terrane: an example of compositional variation resulting from sequential restite fractionation, fractional crystallization and hydrothermal alteration.Google Scholar
Chen, Y. D., Price, R. C., White, A. J. R. & Chappell, B. W. 1990. Mafic inclusions from the Blue Gum and Glenbog granite suites, southern Australia. J GEOPHYS RES 95, 17757–85.CrossRefGoogle Scholar
Chen, Y. D., Chappell, B. W. & White, A. J. R. 1991. Mafic enclaves of some I-type granites of the Lachlan Fold Belt, southeastern Australia. In Didier, J. & Barbarin, B. (eds), Enclaves and granite petrology, 113–24. Amsterdam: Elsevier.Google Scholar
Clemens, J. D. & Wall, V. J. 1981. Crystallization and origin of some peraluminous (S-type) granite magmas. CAN MINERAL 19, 111–32.Google Scholar
Collins, W. J., Beams, S. D., White, A. J. R. & Chappell, B. W. 1982. Nature and origin of A-type granites with particular reference to south-eastern Australia. CONTRIB MINER PETROL 80, 189–200.CrossRefGoogle Scholar
Compston, W. & Chappell, B. W. 1979. Sr-isotope evolution of granitoid source rocks. In McElhinny, M. W. (ed.) The Earth: its origin, structure and evolution, 377–426. London: Academic Press.Google Scholar
David, T. W. E. 1950. The Geology of the Commonwealth of Australia. London: Edward Arnold.Google Scholar
Evernden, J. F. & Richards, J. R. 1962. Potassium-argon dates in eastern Australia. J GEOL SOC AUST 9, 1–49.CrossRefGoogle Scholar
Flood, R. H. & Shaw, S. E. 1975. A cordierite-bearing granite suite from the New England Batholith, Australia. CONTRIB MINER PETROL 52, 157–64.CrossRefGoogle Scholar
Gray, C. M. 1984. An isotopic mixing model for the origin of granitic rocks in southeastern Australia. EARTH PLANET SCI LETT 70, 47–60.CrossRefGoogle Scholar
Gray, C. M. 1990. A strontium isotope traverse across the granitic rocks of southeastern Australia: petrogenetic and tectonic implications. AUST J EARTH SCI 37, 331–49.CrossRefGoogle Scholar
Griffin, T. J., White, A. J. R. & Chappell, B. W. 1978. The Moruya Batholith and geochemical contrasts between the Moruya and Jindabyne Suites. J GEOL SOC AUST 25, 235–47.CrossRefGoogle Scholar
Higgins, N. C. 1990. Comment on “Origin of alkali-feldspar granites: an example from the Poimena Granite, northeastern Tasmania, Australia”. GEOCHIM COSMOCHIM ACTA 54, 2305–11.CrossRefGoogle Scholar
Hills, E. S. 1938. Andalusite and sillimanite in uncontaminated igneous rocks. GEOL MAG 75, 296–303.CrossRefGoogle Scholar
Hine, R. 1971. Granite studies of the Kosciusko Batholith. Unpublished BSc thesis, The Australian National University.Google Scholar
Hine, R., Williams, I. S., Chappell, B. W. & White, A. J. R. 1978. Contrasts between I- and S-type granitoids of the Kosciusko Batholith. J GEOL SOC AUST 25, 219–34.CrossRefGoogle Scholar
Holloway, J. & Burnham, C. W. 1972. Melting relations of basalt with equilibrium water pressure less than total pressure. J PETROL 13, 1–29.CrossRefGoogle Scholar
Hurley, P. M., Bateman, P. C., Fairbairn, H. W. & Pinson, W. H. 1965. Investigations of initial 87Sr/86Sr ratios in the Sierra Nevada plutonic province. BULL GEOL SOC AM 76, 165–74.CrossRefGoogle Scholar
Ishihara, S. 1977. The magnetite-series and ilmenite-series granitic rocks. MINING GEOL 27, 293–305.Google Scholar
Joplin, G. A. 1942. Petrological studies in the Ordovician of N.S.W. I. The Cooma Complex. PROC LINN SOC NSW 67, 156–96.Google Scholar
Joplin, G. A. 1962. An apparent magmatic cycle in the Tasman Geosyncline. J GEOL SOC AUST 9, 51–69.CrossRefGoogle Scholar
Joyce, A. S. 1970. Geochemistry of the Murrumbidgee Batholith. Unpublished PhD thesis, The Australian National University.Google Scholar
Joyce, A. S. 1973. Petrogenesis of the Murrumbidgee Batholith A.C.T. J GEOL SOC AUST 20, 179–97.CrossRefGoogle Scholar
King, P. L., White, A. J. R. & Chappell, B. W. (in prep.) Characterization and origin of the A-type granites of the Lachlan Fold Belt.Google Scholar
Kolbe, P. & Taylor, S. R. 1966. Geochemical investigations of the granitic rocks of the Snowy Mountains area, New South Wales. J GEOL SOC AUST 13, 1–25.CrossRefGoogle Scholar
Lambert, I. B. & White, A. J. R. 1965. The Berridale Wrench Fault: a major structure in the Snowy Mountains of New South Wales. J GEOL SOC AUST 12, 25–33.CrossRefGoogle Scholar
McCulloch, M. T. & Chappell, B. W. 1982. Nd isotopic characteristics of S- and I-type granites. EARTH PLANET SCI LETT 58, 51–64.CrossRefGoogle Scholar
McCulloch, M. T., Chappell, B. W. & Hensel, H. D. 1982. Nd and Sr isotope relations in granitic rocks of the Tasman Fold Belt, eastern Australia. ABST ICOG 5, 246–7.Google Scholar
MacKenzie, D. E., Black, L. P. & Sun, S. S. 1988. Origin of alkali-feldspar granites: an example from the Poimena Granite, northeastern Tasmania, Australia. GEOCHIM COSMOCHIM ACTA, 52, 2507–24.Google Scholar
MacKenzie, D. E., Sun, S. S. & Black, L. p.1990. Reply to N. C. Higgins' comment on “Origin of alkali-feldspar granites: an example from the Poimena Granite, northweastern Tasmania, Australia”. GEOCHIM COSMOCHIM ACTA 54, 2313–22.Google Scholar
Montel, J. M., Mouchel, R. & Pichavant, M. 1988. High apatite solubility in peraluminous melts. TERRA COGNITA 8, 71.Google Scholar
Munksgaard, N. C. 1988. Source of the Cooma Granodiorite, New South Wales—a possible role of fluid-rock interactions. AUST J EARTH SCI 35, 363–77.CrossRefGoogle Scholar
Mysen, B. O. & Virgo, D. 1989. Redox equilibria, structure, and properties of Fe-bearing aluminosilicate melts: relationships among temperature, composition, and oxygen fugacity in the system Na2O–Al2O3,–SiO2–Fe–O. AM MINER 74, 58–76.Google Scholar
Nockolds, S. R. 1947. The relation between chemical composition and paragenesis in the biotite micas of igneous rocks. AM J SCI 245, 401–20.CrossRefGoogle Scholar
O'Neil, J. R. & Chappell, B. W. 1977. Oxygen and hydrogen isotope relations in the Berridale Batholith. J GEOL SOC LONDON 133, 559–71.CrossRefGoogle Scholar
Pichavant, M., Kontak, D. J., Briqueu, L., Herrera, J. V. & Clark, A. H. 1988. The Miocene-Pliocene Macusani Volcanics, SE Peru. II. Geochemistry and origin of a felsic peraluminous magma. CONTRIB MINER PETROL 100, 325–338.CrossRefGoogle Scholar
Pidgeon, R. T. & Compston, W. 1965. The age and origin of the Cooma granite and its associated metamorphic zones, New South Wales. J PETROL 6, 193–222.CrossRefGoogle Scholar
Presnell, & Bateman, P. C. 1973. Fusion relations in the system NaAlSi3O8–CaAl2Si2O8–KAlSi3O8–SiO2–H2O and generation of magmas in the Sierra Nevada batholith. BULL GEOL SOC AM 84, 3181–202.2.0.CO;2>CrossRefGoogle Scholar
Read, H. H. 1948. Granites and granites. In Gilluly, J. (ed.) origin of granite, GEOL SOC AMERICA MEM 28, 1–19.CrossRefGoogle Scholar
Read, H. H. 1949. A contemplation of time in plutonism. Q J GEOL SOC LONDON 105, 101–56.Google Scholar
Reid, E. J. 1980. The geology and geochemistry of the Murrumbucka region. Unpublished MSc thesis, The Australian National University.Google Scholar
Reid, E. J., Stewart-Richardson, D. & Chappell, B. W. 1983. Petrogenesis of the Murrumbucka Tonalite: a granitoid with both I- and S-type character. ABST GEOL SOC AUST 9, 179–81.Google Scholar
Roddick, J. C. & Compston, W. 1976. Radiometric evidence for the age of emplacement and cooling of the Murrumbidgee Batholith. J GEOL SOC AUST 23, 223–33.CrossRefGoogle Scholar
Roddick, J. C. & Compston, W. 1977. Strontium isotopic equilibration: a solution to a paradox. EARTH PLANET SCI LETT 34, 238–46.CrossRefGoogle Scholar
Shand, S. J. 1927. Eruptive rocks. London: Murby.Google Scholar
Silver, L. T. & Chappell, B. W. 1988. The Peninsular Ranges batholith: an insight into the evolution of the Cordilleran batholiths of southwestern North America. TRANS R SOC EDINBURGH EARTH SCI 79, 105–21.Google Scholar
Takahashi, M., Aramaki, S. & Ishihara, S. 1980. Magnetite-series/Ilmenite-series vs I-type/S-type granitoids. MINING GEOL SPEC ISSUE 8, 13–28.Google Scholar
Tattam, C. M. 1925. Contact metamorphism in the Bulla area. PROC R SOC VICTORIA 37, 230–47.Google Scholar
Tetley, N. W. 1978. Geochronology by the 40Ar/39Ar technique using HIFAR reactor. Unpublished PhD thesis, The Australian National University.Google Scholar
Tuttle, O. F. & Bowen, N. L. 1958. Origin of granite in the light of experimental studies in the system NaAlSi3O8–KAlSi2O8–SiO2–H2O. GEOL SOC AM MEM 74.Google Scholar
Vallance, T. G. 1969. Southern and Central Highlands fold belt: plutonic and metamorphic rocks. J GEOL SOC AUST 16, 180–200.Google Scholar
van der Molen, I. & Paterson, M. S. 1979. Experimental deformation of partially melted granite. CONTRIB MINER PETROL 70, 299–318.CrossRefGoogle Scholar
Whalen, J. B. 1985. Geochemistry of an island arc plutonic suite: the Uasilau Yau Yau Intrusive Complex, New Britain, P.N.G. J PETROL 26, 603–32.CrossRefGoogle Scholar
Whalen, J. B. & Chappell, B. W. 1988. Opaque mineralogy and mafic mineral chemistry of I- and S-type granites of the Lachlan Fold Belt, southeast Australia. AM MINERAL 73, 281–96.Google Scholar
White, A. J. R. & Chappell, B. W. 1977. Ultrametamorphism and granitoid genesis. TECTONOPHYSICS 43, 7–22.CrossRefGoogle Scholar
White, A. J. R. & Chappell, B. W. 1983. Granitoid types and their distribution in the Lachlan Fold Belt, southeastern Australia. In Roddick, J. A. (ed.) circum-Pacific Plutonic Terranes, GEOL SOC AM MEM 159, 21–34.Google Scholar
White, A. J. R. & Chappell, B. W. 1988. Some supracrustal (S-type) granites of the Lachlan Fold Belt. TRANS R SOC EDINBURGH EARTH SCI 79, 169–81.Google Scholar
White, A. J. R. & Chappell, B. W. 1989. Geology of the Numbla 1:100 000 Sheet (8624). Sydney: New South Wales Geological Survey.Google Scholar
White, A. J. R., Chappell, B. W. & Cleary, J. R. 1974. Geologic setting and emplacement of some Australian Palaeozoic batholiths and implications for intrusive mechanisms. PACIFIC GEOL 8, 159–71.Google Scholar
White, A. J. R., Williams, I. S. & Chappell, B. W.Berridale 1:100000 Geological Sheet. Sydney: New South Wales Geological Survey.Google Scholar
White, A. J. R., Williams, I. S. & Chappell, B. W. 1977. Geology of the Berridale 1:100000 Sheet (8625). Sydney: New South Wales Geological Survey.Google Scholar
White, A. J. R., Chappell, B. W., Williams, I. S. & Glen, R. A. 1989. Numbla 1:100 000 Geological Sheet. Sydney: New South Wales Geological Survey.Google Scholar
Williams, I. S. 1973. Granites north of Jindabyne, New South Wales. Unpublished BSc thesis, The Australian National University.Google Scholar
Williams, I. S., Compston, W., Chappell, B. W. & Shiriahase, T. 1975. Rubidium-strontium age determinations on micas from a geologically controlled, composite batholith. J GEOL SOC AUST 22, 497–505.CrossRefGoogle Scholar
Williams, I. S., Chen, Y., Chappell, B. W. & Compston, W. 1988. Dating the sources of Bega Batholith granites by ion microprobe. ABST GEOL SOC AUST 21, 424.Google Scholar
Wones, D. R. 1989. Significance of the assemblage titanite + magnetite + quartz in granitic rocks. AM MINERAL 74, 744–49.Google Scholar
Wyborn, D. 1983. Fractionation processes in the Boggy Plain zoned pluton. Unpublished PhD thesis, The Australian National University.Google Scholar
Wyborn, L. A. I. & Chappell, B. W. 1983. Chemistry of the Ordovician and Silurian greywackes of the Snowy Mountains, southeastern Australia: an example of chemical evolution of sediments with time.. CHEM GEOL 39, 81–92.CrossRefGoogle Scholar
Wyborn, D., Chappell, B. W. & Johnston, R. M. 1981. Three S-type volcanic suites from the Lachlan Fold Belt, southeast Australia. J GEOPHYS RES 86, 10335–348.CrossRefGoogle Scholar
Wyborn, D., Turner, B. S. & Chappell, B. W. 1987. The Boggy Plain Supersuite: a distinctive belt of I-type igneous rocks of potential economic significance in the Lachlan Fold Belt. AUST J EARTH SCI 34, 21–43.CrossRefGoogle Scholar
Zen, , E-an, . 1986. Aluminum enrichment in silicate melts by fractional crystallization: some mineralogic and petrographic constraints. J PETROL 27, 1095–117.CrossRefGoogle Scholar