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Anhydrous P-T phase relations of near-primary high-alumina basalt from the South Sandwich Islands

Implications for the origin of island arcs and tonalite-trondhjemite series rocks

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Abstract

Anhydrous P-T phase relations, including phase compositions and modes, are reported from 10–31 kbar for a near-primary high-alumina basalt from the South Sandwich Islands in the Scotia Arc. The water content of natural subduction-related basalt is probably <0.5 wt.% and thus, these results are relevant to the generation of primary basaltic magmas in subduction zones. At high pressures (>27 kbar) garnet is the liquidus phase followed by clinopyroxene, then quartz/coesite at lower temperatures. At intermediate pressures (17–27 kbar), clinopyroxene is the liquidus phase followed by either garnet, quartz, plagioclase, then orthopyroxene or plagioclase, quartz, garnet, then orthopyroxene depending on the pressure within this interval. At all lower pressures, plagioclase is the liquidus phase followed at much lower temperatures (∼100° C at 5 kbar) by clinopyroxene. The absence of olivine from the liquidus suggests that the composition studied here could not have been derived from a more mafic parent by olivine fractionation at any pressure investigated, and supports the interpretation that it is primary. If so, these results also preclude an origin for this melt by partial melting of olivine-rich mantle periddotite and suggest instead that it was generated by partial melting of the descending slab (quartz eclogite) leaving clinopyroxene, garnet, or both in the residue. The generally flat REE patterns for low-K series subduction related basalts argue against any significant role for garnet, however, and it is thus concluded that the composition studied here was extracted at 20–27 kbar after sufficiently high degrees of partial melting (∼50%) to totally consume garnet in the eclogite source. Melting experiments on three MORB composition, although not conclusive, are in agreement with this mechanism. Results at 30 kbar support an origin for tonalite/trondhjemite series rocks by lower degrees of melting (15–30%), leaving both garnet and clinopyroxene in the residue.

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References

  • Allen JC, Boettcher AL, Marland G (1975) Amphiboles in andesite and basalt: I. Stability as a function of P-T-fO2. Am Mineral 60:1069–1085

    Google Scholar 

  • Anderson AT (1974a) Before eruption H2O contents of some high alumina magmas. Bull Volcanol 37:530–552

    Google Scholar 

  • Anderson AT (1974b) Chlorine, sulfur and water in magmas and oceans. Geol Soc Am Bull 1485–1492

  • Anderson AT (1979) Water in some hypersthenic magmas. J Geol 87:509–531

    Google Scholar 

  • Anderson AT (1982) Parental basalts in subduction zones. J Geophys Res 87:7047–7060

    Google Scholar 

  • Anderson RN, Clague DA, Klitgord KD, Marshall M, Nishimori R (1975) Magnetic and petrologic variations along the Galapagos spreading center and their relation to the Galapagos melting anamoly. Geol Soc Am Bull 86:683–694

    Google Scholar 

  • Arth JG (1979) Some trace elements in trondhjemites — their implications to magma genesis and paleotectonic setting. In Barker F (ed) Trondhjemites, Dacites, and related rocks. Elsevier, New York, pp 659

    Google Scholar 

  • Arth JG, Hanson GN (1972) Quartz diorites derived by partial melting of eclogite or amphibolite at mantle depths. Contrib Mineral Petrol 37:161–174

    Google Scholar 

  • Baker PE (1978) The South Sandwich Islands: III. Petrology of the volcanic rocks. Br Antarct Surv Sci Rep No 93

  • Baker DR, Eggler DH (1983) Fractionation paths of Atka (Aleutians) high-alumina basalts: constraints from phase relations. J Volcanol Geotherm Res 18:387–404

    Google Scholar 

  • Barker F (1979) Trondhjemite: definition, environment and hypotheses of origin. In: Barker F (ed) Trondhjemites, Dacites and related rocks. Elsevier, New York, pp 659

    Google Scholar 

  • Basaltic Volcanism Study Project (1981) Basaltic Volcanism on the Terrestrial Planets. Pergammon Press, Inc, New York, pp 1286

    Google Scholar 

  • Brophy JG, Marsh BD (1985) On the origin of hi-alumina arc basalt and the mechanics of melt extraction. J Petrol (in press)

  • Bryan WB, Stice GD, Ewart A (1972) Geology, petrography and geochemistry of the volcanic islands of Tonga. J Geophys Res 77:1566–1585

    Google Scholar 

  • Byers CD, Muenow DW, Garcia MO (1983) Volatiles in basalts and andesites from the Galapagos spreading center, 85° to 86° W. Geochim Cosmochim Acta 47:1551–1558

    Google Scholar 

  • Cohen LS, Ito K, Kennedy GC (1967) Melting and phase relations in an anhydrous basalt to 40 kilobars. Am J Sci 265:475–518

    Google Scholar 

  • Colby JW (1968) Quantitative microprobe analysis of thin insulating films. Adv X-ray Anal 11:287–305

    Google Scholar 

  • DeVore GW (1983) Relations between subduction, slab heating, slab dehydration and continental growth. Lithos 16:255–263

    Google Scholar 

  • Dixon TH, Batiza R (1979) Petrology and chemistry of recent lavas in the northern Marianas: implications for the origin of island arc basalts. Contrib Mineral Petrol 70:167–181

    Google Scholar 

  • Dixon TH, Stern RJ (1983) Petrology, chemistry and isotopic composition of submarine volcanoes in the southern Mariana arc. Geol Soc Am Bull 94:1159–1172

    Google Scholar 

  • Eggler DH (1972) Water saturated and undersaturated melting relations in a Paricutin andesite and an estimate of water content in the natural magma. Contrib Mineral Petrol 34:261–271

    Google Scholar 

  • Eggler DH, Burnham CW (1973) Crystallization and fractionation trends in the system andesite-H2O-CO2-O2 at pressures to 10 kbar. Geol Soc Am Bull 84:2517–2532

    Google Scholar 

  • Ewart A, Bryan WB (1972) The petrology and geochemistry of the igneous rocks from Eua, Tongan Island. Geol Soc Am Bull 83:3281–3298

    Google Scholar 

  • Ewart A, Bryan W, Gill J (1973) Mineralogy and geochemistry of the younger volcanic islands of Tonga, SW Pacific J Petrol 14:429–465

    Google Scholar 

  • Ewart A, Hildreth W, Carmichael ISE (1975) Quaternary acid magma in New Zealand. Contrib Mineral Petrol 51:1–27

    Google Scholar 

  • Ford CE, Biggar GM, Humphries DJ, Wilson G, Dixon D, O'Hara MJ (1972) Role of water in the evolution of the lunar crust: an experimental study of sample 14310; an indication of lunar calc-alkaline volcanism. Proc Third Lunar Sci Conf, Geochim Cosmochim Acta Suppl 3, Vol 1, pp 207–229

    Google Scholar 

  • Fyfe WS (1978) The evolution of the earth's crust: modern plate tectonics to ancient hot spot tectonics. Chem Geol 23:89–114

    Google Scholar 

  • Garcia MO, Liu MWK, Muenow DW (1979) Volatiles in submarine volcanic rocks from the Mariana island arc and trough. Geochim Cosmochim Acta 43:305–312

    Google Scholar 

  • Gill JB (1974) Role of underthrust oceanic crust in the genesis of a Fijiian calc-alkaline suite. Contrib Mineral Petrol 43:29–45

    Google Scholar 

  • Gill JB (1981) Orogenic Andesites and Plate Tectonics. Springer, New York, p 390

    Google Scholar 

  • Gill JB (1984) Sr-Pb-Nd isotopic evidence that both MORB and OIB sources contribute to oceanic island arc magmas in Fiji. Earth Planet Sci Lett 68:443–458

    Google Scholar 

  • Green DH (1976) Experimental testing of ‘equilibrium’ partial melting of peridotite under water-saturated, high-pressure conditions. Can Mineral 14:255–268

    Google Scholar 

  • Green TH, Ringwood AE (1968) Genesis of the calc-alkaline igneous rock suite. Contrib Mineral Petrol 18:105–162

    Google Scholar 

  • Green DH, Hibberson WD, Jaques AL (1979) Petrogenesis of midocean ridge basalts. In: McElhinny MW (ed) The Earth: Its origin, structure and evolution. Academic Press, NY, pp 265–299

    Google Scholar 

  • Grove TL, Baker MB (1984) Phase equilibrium controls on the tholeiitic versus calc-alkaline differentiation trends. J Geophys Res 89:3253–3274

    Google Scholar 

  • Harris DM, Anderson AT (1984) Volatiles, H2O, CO2, and Cl in a subduction related basalt. Contrib Mineral Petrol 87:120–128

    Google Scholar 

  • Hebert R, Bideau D, Hekinian R (1983) Ultramafic and mafic rocks from the Garret Transform near 13° 30′ S on the East Pacific Rise: igneous petrology. Earth Planet Sci Lett 65:107–125

    Google Scholar 

  • Irving AJ (1978) A review of experimental studies of crystal/liquid trace element partitioning. Geochim Cosmochim Acta 42:743–770

    Google Scholar 

  • Jahn BM, Vidal P, Kroner A (1984) Multi-chronometric ages and origins of Archaen tonalitic genisses in Finnish Lapland: a case for long crustal residence time. Contrib Mineral Petrol 86:398–408

    Google Scholar 

  • Kay SM, Kay RW (1985) Aleutian tholeiitic and calc-alkaline magma series I: The mafic phenocrysts. Contrib Mineral Petrol 90:276–290

    Google Scholar 

  • Kuno H (1960) High-alumina basalt. J Petrol 1:121–145

    Google Scholar 

  • Kuno H (1968) Origin of andesites and its bearing on island arc structure. Bull Volcanol 32:141–176

    Google Scholar 

  • Kushiro I (1972) Effect of water on the composition of magmas formed at high pressures. J Petrol 13:311–334

    Google Scholar 

  • Kushiro I (1974) Melting of a hydrous upper mantle and possible generation of andesitic magma: an approach from synthetic systems. Earth Planet Sci Lett 2:294–299

    Google Scholar 

  • Larsson EE, Reynolds RI, Merrill R, Levi S, Ozima M, Aoki Y, Konishita H, Zasshu S, Kawai N, Nakajima T, Hiraoka K (1974) Major-element petrochemistry of some extrusive rocks from the volcanically active Mariana Islands. Bull Volcanol 39:361–377

    Google Scholar 

  • Luhr JF, Carmichael ISE (1980) The Colima volcanic complex, Mexico. Contrib Mineral Petrol 71:343–372

    Google Scholar 

  • Maaløe S (1979) Compositional range of primary tholeiitic magmas evaluated from major-element trends. Lithos 12:59–72

    Google Scholar 

  • Maaløe S (1982) Petrogenesis of Archaen tonalites. Geol Rundschau 71:328–346

    Google Scholar 

  • Maaløe S (1985) Principles of Igneous Petrology. Springer, Berlin, p 371

    Google Scholar 

  • Maaløe S, Jakobsson SP (1980) The PT phase relations of a primary oceanite from the Reykjanes peninsula, Iceland. Lithos 13:237–246

    Google Scholar 

  • Maaløe S, Petersen TS (1981) Petrogenesis of oceanic andesites. J Geophys Res 86:10273–10286

    Google Scholar 

  • Maaløe S, Wyllie PJ (1975) Water content of a granite magma deduced from the sequence of crystallization determined experimentally with water-undersaturated conditions. Contrib Mineral Petrol 52:175–191

    Google Scholar 

  • Marsh BD (1979) Island-arc volcanism. Am Sci 67:161–172

    Google Scholar 

  • Marsh BD (1982) The Aleutians. In: Thorpe RS (ed) Andesites: Orogenic andesites and related rocks. John Wiley and Sons, New York, p 724

    Google Scholar 

  • Marsh BD, Carmichael ISE (1974) Benioff zone magmatism. J Geophys Res, 79:1196–1206

    Google Scholar 

  • Melson WG, Jarosewich E, Lundquist CA (1970) Volcanic eruption at Metis Shoal, Tonga, 1967–1968: description and petrology. Smithson Contrib Earth Sci 4

  • Myers J, Eugster HP (1983) The system Fe-Si-O: oxygen buffer calibrations to 1,500 K. Contrib Mineral Petrol 82:75–90

    Google Scholar 

  • Mysen BO, Boettcher AL (1975) Melting of a hydrous mantle II: Geochemistry of crystals and liquids formed by anatexis of mantle periodotite at high pressures and high temperatures as a function of controlled activities of water, hydrogen and carbon dioxide. J Petrol 16:549–593

    Google Scholar 

  • Oxburgh ER, Turcotte DL (1976) The physico-chemical behaviour of the descending lithosphere. Tectonophysics 32:107–178

    Google Scholar 

  • Perfit MR, Brueckner H, Lawrence H, Kay RW (1980) Trace element and isotopic variation in a zoned pluton and associated volcanic rocks. Unalaska Island, Alaska: a model for fractionation in the Aleutian calc-alkaline suite. Contrib Mineral Petrol 73:69–87

    Google Scholar 

  • Sekine T, Katsura T, Aramaki S (1979) Water saturated phase relations of some andesites with application to the estimation of the inital temperature and water pressure at the time of eruption. Geochim Cosmochim Acta 43:1367–1376

    Google Scholar 

  • Shaw DM (1970) Trace element fractionation during anatexis. Geochim Cosmochim Acta 34:237–243

    Google Scholar 

  • Smith RG (1957) Geology of Saipan, Mariana Islands. Petrology of the volcanic rocks. US Geol Surv Prof Pap 280–B, 127–174

    Google Scholar 

  • Stern CR, Wyllie PJ (1973) Melting relations of basalt-andesite-rhyolite-H2O and a pelagic red clay to 30 kilobars. Contrib Mineral Petrol 42:313–323

    Google Scholar 

  • Stern CR, Wyllie PJ (1975) Effect of iron absorption by noble-metal capsules on phase boundaries in rock melting experiments at 30 kilobars. Contrib Mineral Petrol 60:681–689

    Google Scholar 

  • Stern CR, Wyllie PJ (1978) Phase compositions through crystallization intervals in basalt-andesite-H2O at 30 kbar with implications for subduction zone magmas. Am Mineral 63:641–663

    Google Scholar 

  • Stern RJ (1979) On the origin of andesite in the northern Mariana island arc: implications from Agrigan. Contrib Mineral Petrol 68:207–219

    Google Scholar 

  • Stern RJ (1982) Strontium isotopes from circum-Pacific intra-oceanic island arcs and marginal basins: Regional variations and implications for magma genesis. Geol Soc Am Bull 93:477–486

    Google Scholar 

  • Stern RJ, Ito E (1983) Trace element and isotopic constraints on the source of magmas in the active volcano and Mariana island arcs, western Pacific. J Volcanol Geotherm Res 18:461–482

    Google Scholar 

  • Tanadata H (1949) Volcanoes in the Mariana islands in the Japanese mandated south seas. Bull Volcanol 5:199–226

    Google Scholar 

  • Tatsumi Y, Sakuyama M, Fukuyama H, Kushiro I (1983) Generation of arc basalt magmas and thermal structure of the mantle wedge in subduction zones. J Geophys Res 88:5815–5825

    Google Scholar 

  • Thompson RN (1971) Melting behavior of two Snake River lavas at pressures up to 35 kbar. Carnegie Inst Wash Yrbk 71:406–410

    Google Scholar 

  • Thompson RN, Kushiro I (1972) The oxygen fugacity within graphite capsules in piston cylinder apparatus at high pressure. Carnegie Inst, Washington Yearbk 71:615–616

    Google Scholar 

  • Toksoz MN, Minear JW, Julian BR (1971) Temperature field and geophysical effects of a down going slab. J Geophys Res 76:1113–1138

    Google Scholar 

  • White WM, Patchett J (1984) Hf-Nd-Sr Isotopes and incomaptible element abundances in island arcs: Implications for magma origins and crustmantle evolution. Earth Planet Sci Lett 67:167–185

    Google Scholar 

  • Williamson DW, Kennedy GC (1969) Melting curve of diopside to 50 kilobars. J Geophys Res 74:4359–4366

    Google Scholar 

  • Yoder HS, Tilley CE (1962) Origin of basalt magmas: an experimental study of natural and synthetic rock system. J Petrol 3:342–532

    Google Scholar 

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  1. Department of Geology, University of Bergen, Allegaten 41, N-5000, Bergen, Norway

    A. Dana Johnston

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Johnston, A.D. Anhydrous P-T phase relations of near-primary high-alumina basalt from the South Sandwich Islands. Contr. Mineral. and Petrol. 92, 368–382 (1986). https://doi.org/10.1007/BF00572166

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