Abstract
Plutonic zircons from the Cretaceous Separation Point Suite (SPS) were analysed by LA-ICPMS for U–Pb isotope ratios and trace element concentrations. Pooled 206Pb/238U ages range from 112 to 124 Ma. Cathodoluminescence imaging reveals minor inheritence and textural evidence of repeated dissolution and re-precipitation of zircon. Core and rim spot analyses, however, document zircon growth during extended periods of time (>2 myr). Protracted crystallisation histories for simple plutonic systems are inconsistent with generalised thermal constraints, which predict cooling below the solidus within <1 myr. Consequently, we conclude that the SPS granitoids sampled in this study were not emplaced rapidly but incrementally over extended time periods. Zircon Th/U and Zr/Hf ratios are positively correlated with crystallisation temperatures, consistent with crystallisation from evolving melts. However, highly variable trace element concentrations, along with temperature reversals are indicative of complex crystallisation histories involving continuous fractional crystallisation repeatedly punctuated by hotter, more mafic magma recharge. Normalised abundances of the redox-sensitive elements Eu and Ce in zircon vary systematically with degrees of whole rock differentiation, pointing to evolutionary trends in magmatic oxidation states coupled with feldspar crystallisation.
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References
Ballard JR, Palin JM, Williams IR, Campbell IH (2001) Two ages of porphyry intrusion resolved for the super-giant Chuquicamata copper deposit in northern Chile by ELA-ICPMS. Geology 29:383–386
Ballard JR, Palin JM, Campbell IH (2002) Relative oxidation states of magmas inferred from Ce(IV)/Ce(III) in zircon: application to porphyry copper deposits of northern Chile. Contrib Mineral Petrol 144:347–364
Bateman R (1995) The interplay between crystallisation, replenishment, and hybridization in large felsic magma chambers. Earth Sci Rev 39:91–106
Black LP, Kamo SL, Allen CM, Aleinikoff JN, Davis DW, Korsch RJ, Foudoulis C (2003) TEMORA 1: a new zircon standard for Phanerozoic U–Pb geochronology. Chem Geol 200:155–170
Blundy J, Wood B (1994) Prediction of crystal-melt partition coefficients from elastic moduli. Nature 372:452–454
Bolhar R, Whitehouse MJ, Weaver SD, Cole JW (2006) Geochemical variability of zircons from the Cretaceous Separation Point Batholith (New Zealand)—clues to sources and igneous processes. Geochim Cosmochim Acta 70(18):A57–A57
Bolhar R, Weaver SD, Whitehouse MJ, Palin JM, Woodhead JD, Cole JW (2008) Sources and evolution of arc magmas inferred from coupled O- and Hf-isotope systematics of plutonic zircons from the Cretaceous Separation Point Suite (New Zealand). Earth Planet Sci Lett (accepted)
Boynton WV (1984) Geochemistry of the rare earth elements: meteorite studies. In: Henderson P (ed) Rare earth element geochemistry. Elsevier, Amsterdam, pp 63–114
Bradshaw JD (1989) Cretaceous geotectonic pattern in the New Zealand region. Tectonics 8:803–820
Cavosie AJ, Valley JW, Wilde SA, EIMF (2006) Correlated microanalysis of zircon: Trace element, δ18 O, and U–Th–Pb isotopic constraints on the igneous origin of complex >3900 Ma detrital grains. Geochim Cosmochim Acta 70:5601–5616
Charlier BLA, Wilson CJN, Lowenstern JB, Blake S, Calsteren PWV, Davidson JP (2005) Magma generation at a large, hyperactive silicic volcano (Taupo, New Zealand) revealed by U–Th and U–Pb systematics in zircons. J Petrol 46:3–32
Coleman DS, Gray W, Glazner AF (2004) Rethinking the emplacement and evolution of zoned plutons: geochronologic evidence for incremental assembly of the Tuolumne Intrusive Suite, California. Geology 32:433–436
Compston W, Williams IS, Meyer C (1984) U–Pb geochronology of zircons from lunar breccia 73217 using a sensitive high mass-resolution ion microprobe. J Geophys Res 89(suppl):B525–B524
Davidson JP, Tepley III F, Knesel KM (1998) Crystal isotope stratigraphy: a method for constraining magma differentiation pathways. EOS 79:185, 189, 193
Davidson JP, Tepley III F, 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 Planet Sci Lett 184:427–442
Duffield WA, Ruiz J (1992) Compositional gradients in large volume reservoirs of silicic magma as evidenced by ignimbrites versus Taylor Creek Rhyolite lava domes. Contrib Mineral Petrol 110:192–210
Elburg MA (1996) U–Pb ages and morphologies of zircon in microgranitoid enclaves and peraluminous host granite: evidence for magma mingling. Contrib Mineral Petrol 123:177–189
Evans OC, Hanson GN (1993) Accessory-mineral fractionation of rare-earth element (REE) abundances in granitoid rocks. Chem Geol 110:69–93
Ferry JM, Watson EB (2007) New thermodynamic models and revised calibrations for the Ti-in-zircon and Zr-in-rutile thermometers. Contrib Mineral Petrol 154(4):429–437
Francalanci L, Davies GR, Lustenhouwer W, Tommasini S, Mason PRD, Conticelli S (2005) Intra-grain Sr isotope evidence for crystal recycling and multiple magma reservoirs in the recent activity of stromboli volcano, southern Italy. J Petrol 46:1997–2021
Gagnevin D, Daly JS, Waight TE, Morgan D, Poli G (2005) Pb isotopic zoning of K-feldspar megacrysts determined by Laser Ablation Multi-Collector ICP-MS: insights into granite petrogenesis. Geochim Cosmochim Acta 69:1899–1915
Gibson GM, Ireland TR (1995) Granulite formation during continental extension in Fiordland, New Zealand. Nature 375:479–482
Gibson GM, McDougall I, Ireland T (1988) Age constraints on metamorphism and the development of a metamorphic core complex in Fiordland, southern New Zealand. Geology 16:405–408
Glazner AF, Bartley JM, Coleman DS, Gray W, Taylor RZ (2004) Are plutons assembled over millions of years by amalgamation from small magma chambers? GSA Today 14:4–11
Griffin WL, Wang X, Jackson SE, Pearson NJ, O’Reilly SY, Xu XS, Zhou XM (2002) Zircon chemistry and magma mixing, SE China: in-situ analysis of Hf isotopes, Tonglu and **tan igneous complexes. Lithos 61(3–4):237–269
Harrison TM, McDougall I (1980) Investigation of an intrusive contact, northwest Nelson, New Zealand—1. Thermal, chronological and isotopic constraints. Geochim Cosmochim Acta 44:1985–2003
Harrison TM, Watson EB (1983) Kinetics of zircon dissolution and zirconium diffusion in granitic melts of variable water content. Contrib Mineral Petrol 84:66–72
Hawkesworth CJ, Kemp AIS (2006) Using hafnium and oxygen isotopes in zircons to unravel the record of crustal evolution. Chem Geol 226(3–4):144–162
Hollis JA, Clarke GL, Klepeis KA, Daczko NR, Ireland TR (2004) The regional significance of Cretaceous magmatism and metamorphism in Fiordland, New Zealand, from U–Pb zircon geochronology. J Metamorph Geol 22:607–627
Hoskin PWO (2005) Trace-element composition of hydrothermal zircon and the alteration of Hadean zircon from the Jack Hills, Australia. Geochim Cosmochim Acta 69(3):637–648
Hoskin PWO, Black LP (2000) Metamorphic zircon formation by solid-state recrystallization of protolith igneous zircon. J Metamorph Geol 18(4):423–439
Hoskin PWO, Ireland TR (2000) Rare earth element chemistry of zircon and its use as a provenance indicator. Geology 28(7):627–630
Hoskin PWO, Schaltegger U (2003) The composition of zircon and igneous and metamorphic petrogenesis. In: Hanchar JM, Hoskin PWO (eds) Zircon Reviews in Mineralogy and Geochemistry, vol 53. Mineralogical Society of America, Washington, pp 27–62
Hoskin PWO, Kinny PD, Wyborn D, Chappell BW (2000) Identifying accessory mineral saturation during differentiation in granitoid magmas: an integrated approach. J Petrol 41(9):1365–1396
Ireland TR (1992) Crustal evolution of New Zealand: evidence from age distributions of detrital zircon in Western Province paragneisses and Torlesse Greywacke. Geochim Cosmochim Acta 56:911–920
Jongens R, Bradshaw JD, Fowler A (2003) The Ballon Melange, northwest Nelson: origin, structure, and emplacement. NZ J Geol Geophys 46:437–448
Keay S, Steele D, Compston W (1999) Identifying granite sources by SHRIMP U–Pb zircon geochronology: an application to the Lachlan foldbelt. Contrib Mineral Petrol 137(4):323–341
Kemp AIS, Whitehouse MJ, Hawkesworth CJ, Alarcon MK (2005a) A zircon U–Pb study of metaluminous (I-type) granites of the Lachlan Fold Belt, southeastern Australia: implications for the high/low temperature classification and magma differentiation processes. Contrib Mineral Petrol 150(2):230–249
Kemp AIS, Wormald RJ, Whitehouse MJ, Price RC (2005b) Hf isotopes in zircon reveal contrasting sources and crystallisation histories for alkaline to peralkaline granites of Temora, southeastern Australia. Geology 33:797–800
Kimbrough DL, Tulloch AJ, Geary E, Coombs DS, Landis CA (1993) Isotopic ages from the Nelson region of South Island, New Zealand; crustal structure and the definition of the Median Tectonic Zone. Tectonophysics 225:443–448
Kimbrough DL, Tulloch AJ, Coombs DS, Landis CA, Johnston MR, Mattinson JM (1994) Uranium-lead zircon ages from the Median Tectonic Zone, South Island, New Zealand. NZ J Geol Geophys 37:393–419
Knesel KM, Davidson JP, Duffield WA (1999) Evolution of silicic magma through assimilation ans subsequent recharge: evidence from Sr isotopes in sanidine phenocrysts, Taylor Creek Rhyolite, NM. J Petrol 40:773–786
Kosler J, Fonneland H, Sylvester P, Tubrett M, Pedersen RB (2002) U–Pb dating of detrital zircons for sediment provenance studies—a comparison of laser ablation ICPMS and SIMS techniques. Chem Geol 182(2–4):605–618
Lowery-Claiborne L, Miller CF, Walker N, Wooden JL, Mazdab FK, Bea F (2007) Tracking magmatic processes through Zr/Hf ratios in rocks and Hf and Ti zoning in zircons: an example from the Spirit Mountain Batholith, Nevada. Mineral Mag 70:517–543
Maas R, Kinny PD, Williams IR, Froude DO, Compston W (1992) The Earth’s oldest known crust: a geochronological and geochemical study of 3900–4200 Ma old detrital zircons from Mount Narryer and Jack Hills, Western Australia. Geochim Cosmochim Acta 56:1281–1300
Maas R, Nicholls IA, Greig A, Nemchin A (2001) U–Pb zircon studies of mid-crustal metasedimentary enclaves from the S-type Deddick Granodiorite, Lachlan Fold Belt, SE Australia. J Petrol 42(8):1429–1448
Mahood G, Hildreth W (1983) Large partition coefficients for trace elements in high-silica rhyolites. Geochim Cosmochim Acta 47:11–30
Mattinson JL, Kimbrough DL, Bradshaw JY (1986) Western Fiordland orthogneiss: Early Cretaceous arc magmatism and granultie facies metamorphism, New Zealand. Contrib Mineral Petrol 92:383–392
Matzel JEP, Bowring SA, Miller RB (2006) Time scale of pluton construction at differing crustal levels: examples from the Mount Stuart and Tenpeak intrusions, North Cascades, Washington. Geol Soc Am Bull 118:1412–1430
Miller JS, Wooden JL (2004) Residence, resorption and recycling of zircons in Devils Kitchen Rhyolite, Coso Volcanic Field, California. J Petrol 45:2155–2170
Mortimer N, Gans P, Calvert A, Walker N (1999) Geology and thermochronometry of the east edge of the Median Batholith (Median Tectonic Zone): a new perspective on Permian to Cretaceous crustal growth of New Zealand. Isl Arc 8:404–425
Muir RJ, Ireland TR, Weaver SD, Bradshaw JD (1994) Ion microprobe U–Pb zircon geochronology of granitic magmatism in the Western Province of the South-Island, New-Zealand. Chem Geol 113(1–2):171–189
Muir RJ, Weaver SD, Bradshaw JD, Eby GN, Evans JA (1995) The Cretaceous Separation Point Batholith, New-Zealand—granitoid magmas formed by melting of mafic lithosphere. J Geol Soc 152:689–701
Muir RJ, IrelandTR, Weaver SD, Bradshaw JD (1996) Ion microprobe dating of Paleozoic granitoids: Devonian magmatism in New Zealand and correlations with Australia and Antarctica. Chem Geol 127:191–210
Muir RJ, Ireland TR, Weaver SD, Bradshaw JD, Evans JA, Eby GN, Shelley D (1998) Geochronology and geochemistry of a Mesozoic magmatic arc system, Fiordland, New Zealand. J Geol Soc 155:1037–1052
Pearce NJG, Perkins WT, Westgate JA, Gorton MP, Jackson SE, Neal CR, Chenery SP (1997) A compilation of new and published major and trace element data for NIST SRM 610 and NIST SRM 612 glass reference materials. Geostand Newsl 21:115–144
Ramos FC, Reid MR (2005) Distinguishing melting of heterogeneous mantle sources from crustal contamination: insights from Sr isotopes at the phenocryst scale, Pisgah Crater, California. J Petrol 46:999–1012
Robinson DM, Miller CF (1999) Record of magma chambe processes preserved in accessory mineral assemblages, Aztec Wash pluton, Nevada. Am Mineral 84:1346–1353
Rubatto D (2002) Zircon trace element geochemistry: partitioning with garnet and the link between U–Pb ages and metamorphism. Chem Geol 184(1–2):123–138
Sawka WN (1988) REE and trace element variations in accessory minerals and hornblende from the strongly zoned McMurry Meadows Pluton, California. Trans R Soc Edinb Earth Sci 79:157–168
Scott JM, Cooper AF (2006) Early Cretaceous extensional exhumation of the lower crust of a magmatic arc: evidence from the Mount Irene Shear Zone, Fiordland, New Zealand. Tectonics 25:TC3018. doi:10.1029/2005TC001890
Stern RA, Amelin Y (2003) Assessment of errors in SIMS zircon U–Pb geochronology using a natural zircon standard and NIST SRM 610 glass. Chem Geol 197:111–142
Tepley III F, Davidson JP, Clynne MA (1999) Magmatic interactions as recorded in plagioclase phenocrysts of Chaos Crags, Lassen Volcanic Center, California. J Petrol 40:787–806
Tulloch AJ, Challis GA (2000) Emplacement depths of Paleozoic–Mesozoic plutons from western New Zealand estimated by hornblende-Al geobarometry. NZ J Geol Geophys 43:555–567
Tulloch AJ, Kimbrough DL (2003) Paired plutonic belts in convergent margins and the development of high Sr/Y: Peninsular Ranges batholith of Baja-California and Median batholith of New Zealand. Geol Soc Am Bull Spec Pap 374:275–295
Waight TE, Weaver SD, Muir RJ (1998) Mid-Cretaceous granitic magmatism during the transition from subduction to extension in southern New Zealand: a chemical and tectonic synthesis. Lithos 45(1–4):469–482
Wandres AM, Bradshaw JD (2005) New Zealand tectonostratigraphy and implications from conglomeratic rocks for the configuration of the SW Pacific margin of Gondwana. In: Vaughan APM, Leat PT, Pankhurst RJ (eds) Terrance processes at the margins of Gondwana, vol 246. The Geological Society of London, Special Publication, pp 179–216
Wark DA, Miller CF (1993) Accessory mineral behaviour during differentiation of a granite suite: monazite, xenotime and zircon in the Sweetwater Wash pluton, southeastern California, USA. Chem Geol 110:49–67
Watson EB, Harrison TM (2005) Zircon thermometer reveals minimum melting conditions on earliest. Earth Sci 308:841–844
Watson EB, Wark DA, Thomas JB (2006) Crystallisation thermometers for zircon and rutile. Contrib Mineral Petrol 151:413–433
Whitehouse MJ, Kamber BS (2005) Assigning dates to thin gneissic veins in high-grade metamorphic terranes: a cautionary tale from Akilia, southwest Greenland. J Petrol 46(2):291–318
Whitehouse MJ, Platt JP (2003) Dating high-grade metamorphism—constraints from rare-earth elements in zircon and garnet. Contrib Mineral Petrol 145(1):61–74
Wiebe RA (1993) The Pleasant Bay layered gabbro-diorite, coastal Maine; ponding and crystallisation of basaltic injections into a silicic magma chamber. J Petrol 34:461–489
Wiebe RA, Collins WJ (1998) Depositional features and stratigraphic sections in granitic plutons; implications for the emplacement and crystallisation of granitic magma. J Struct Geol 20:1273–1289
Wiebe RA, Smith D, Sturm M, King EM, Seckler MS (1997) Enclaves in the Cadillac Mountain Granite (Coastal Maine): samples of hybrid magma from the base of the chamber. J Petrol 38:393–423
Wiedenbeck M, Alle P, Corfu F, Griffin WL, Meier M, Oberli F, Vonquadt A, Roddick JC, Speigel W (1995) 3 Natural zircon standards for U–Th–Pb, Lu–Hf, trace-element and REE analyses. Geostand Newsl 19(1):1–23
Wiedenbeck M, Hanchar JM, Peck WH, Sylvester P, Valley J, Whitehouse M, Kronz A, Morishita Y, Nasdala L et al (2004) Further characterisation of the 91500 zircon crystal. Geostandards Geoanalytical Res 28:9–39
Williams IS, Chappell BW, Chen YD, Crook KAW (1992) Inherited and detrital zircons—vital clues to the granite protoliths and early igneous history of southeast Australia. Trans R Soc Edinb Earth Sci 83:503
Wysoczanski RJ, Gibson GM, Ireland TR (1997) Detrital zircon age patterns and provenance in Late Paleozoic to Early Mesozoic New Zealand; terranes and development of the Paleo-Pacific Gondwana margin. Geology 25:939–942
Zartman RE, Richardson SH (2005) Evidence from kimberlitic zircon for a decreasing mantle Th/U since the Archean. Chem Geol 220(3–4):263–283
Acknowledgments
This research was funded through a Marsden grant to JWC and SDW and a University of Otago Research Grant to JMP. RB acknowledges a postdoctoral fellowship from the University of Canterbury. Charlotte Allen and Mike Shelley (Australian National University) and Michelle Herd, Rob Spiers, Jennifer Jackson, Kerry Swanson and Sacha Baldwin-Cunningham (University of Canterbury) are thanked for assistance with ICPMS analysis and mineral separation. Constructive and detailed criticism by two anonymous reviewers as well as editorial input from Bill Collins helped to improve the clarity of this paper. Anekant Wandres provided an electronic copy of the geological map and helpful advice.
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Bolhar, R., Weaver, S.D., Palin, J.M. et al. Systematics of zircon crystallisation in the Cretaceous Separation Point Suite, New Zealand, using U/Pb isotopes, REE and Ti geothermometry. Contrib Mineral Petrol 156, 133–160 (2008). https://doi.org/10.1007/s00410-007-0278-5
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DOI: https://doi.org/10.1007/s00410-007-0278-5