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Mineralogy and Petrology

, 101:195 | Cite as

Geochemistry of microgranular enclaves in Aligoodarz Jurassic arc pluton, western Iran: implications for enclave generation by rapid crystallization of cogenetic granitoid magma

  • Amir Esna-Ashari
  • Jamshid Hassanzadeh
  • Mohammad-Vali Valizadeh
Original Paper

Abstract

Microgranular enclaves are common in the Jurassic Aligoodarz granitoids of western Iran. Enclaves Enclosed in Granodiorite (EEG) and Enclaves Enclosed in Tonalite (EET) are different but they overlap their hosts on variation diagrams. The EEG is compositionally intermediate between tonalite and granodiorite. Mixing between tonalitic and granodioritic magmas and fractional crystallization are two models examined as the origin of the EEG. Field, textural, mineralogical and chemical observations suggest that chemical equilibration, common in magma mixing, was not attained between the EEG and its host. This, together with other observations does not support magma mixing as a mechanism for forming the EEG. Alternatively, excessive nucleation of biotite ± Fe-Ti-oxides ± amphibole by rapid cooling at borders of a shallow magma chamber and later fragmentation and dispersal by dynamic arc plutonism best explains the EEG. However, channeling of a new magma into the nearly solid tonalitic host explains formation of the EET.

Keywords

Host Rock Tourmaline Magma Chamber Fractional Crystallization Plagioclase Phenocryst 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

Constructive criticisms from Teodosio Donaire, Finger Fritz and Georg Hoinkes have helped to improve the manuscript. Riccardo Vannucci from University of Pavia, Italy is also acknowledged for his helps. Support for this work was provided by the Iran National Science Foundation (INSF), Grant no. 87020210, and Tectonics Observatory of California Institute of Technology, USA.

References

  1. Ahmadi Khalaji AA, Esmaeily D, Valizadeh MV, Rahimpour-Bonab H (2007) Petrology and geochemistry of the granitoid complex of Boroujerd, Sanandaj-Sirjan Zone, Western Iran. J Asian Earth Sci 29:859–877CrossRefGoogle Scholar
  2. Alavi M (1991) Tectonic map of the Middle East. Geological Survey of Iran, scale 1:2,900,000Google Scholar
  3. Alfred T, Anderson JR (1984) Probable relations between plagioclase zoning and magma dynamics, Fuego Volcano, Guatemala. Am Miner 69:660–676Google Scholar
  4. Allen CM (1991) Local equilibrium of mafic enclaves and granitoids of the Turtle pluton, southeast California: Mineral, chemical and isotopic evidence. Am Miner 76:574–588Google Scholar
  5. Armstrong JT (1988) Quantitative analysis of silicate and oxide minerals: comparison of Monte Carlo, ZAF, and U(qz) procedures. In: Newbury DE (ed) Microbeam analysis-1988. San Francisco Press, San Francisco, pp 239–246Google Scholar
  6. Arth JG (1976) Behavior of trace elements during magmatic processes –a summary of theoretical models and their applications. J Res US Geol Surv 4:41–47Google Scholar
  7. Barbarin B (1991) Enclaves of the Mesozoic calc-alkaline granitoids of the Sierra Nevada Batholith, California. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amesterdam, pp 135–153Google Scholar
  8. Barbarin B (2005) Mafic magmatic enclaves and mafic rocks associated with some granitoids of the central Sierra Nevada batholith, California: nature, origin, and relations with the hosts. Lithos 88:155–177CrossRefGoogle Scholar
  9. Barbarin B, Didier J (1991) Conclusions: enclaves and granite petrology. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amesterdam, pp 545–549Google Scholar
  10. Barbarin B, Didier J (1992) Genesis and evolution of mafic microgranular enclaves through various types of interaction between coexisting felsic and mafic magmas. T Roy Soc Edin-Earth 83:145–153Google Scholar
  11. Bea F (1996) Residence of REE, Y, Th and U in granite and crustal protoliths; implications for the chemistry of crustal melts. J Petrol 37:521–552CrossRefGoogle Scholar
  12. Bébien J (1991) Enclaves in plagiogranite of the Guevgueli ophiolitic complex, Macedonia, Greece. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amesterdam, pp 205–229Google Scholar
  13. Berberian M, King GCP (1981) Towards a paleogeography and tectonic evolution of Iran. Can J Earth Sci 18:210–265CrossRefGoogle Scholar
  14. Blundy JD, Sparks RSJ (1992) Petrogenesis of mafic inclusions in granitoids of the Adamelo Massif, Italy. J Petrol 33:1039–1104Google Scholar
  15. Blundy J, Wood B (2003) Partitioning of trace elements between crystals and melts. Earth Planet Sci Lett 210:383–39CrossRefGoogle Scholar
  16. Boynton WV (1984) Cosmochemistry of the rare earth elements: meteorite studies. In: Henderson P (ed) Rare earth element geochemistry. Elsevier, pp 63–114Google Scholar
  17. Castro A, Mereno-Ventas I, De La Rosa JD (1990) Microgranular enclaves as indicators of hybridization processes in granitoid rocks. Hercynian Belt, Spain. Wally Pitcher Conference, University of Liverpool, January 1990. Geol J 25:391–404CrossRefGoogle Scholar
  18. Castro A, Moreno-Ventas I, De La Rosa JD (1991) H-type (hybrid) granitoids: a proposed revision of the granite-type classification and nomenclature. Earth Sci 31:237–253CrossRefGoogle Scholar
  19. Chappell BW (1978) Granitoids from the Moonbi district, New England Batholith, Eastern Australia. J Geol Soc Aust 25:267–283Google Scholar
  20. Chappell BW (1996) Magma mixing and the production of compositional variation within granite suites: evidence from the granite of Southeastern Australia. J Petrol 37:449–470CrossRefGoogle Scholar
  21. Chappell BW, White AJR, Williams IS, Wyborn D, Wyborn LAI (2000) Lachlan Fold Belt granite revisited: high- and low-temperature granite and their implications. Aust J Earth Sci 47:123–138CrossRefGoogle Scholar
  22. Chen YD, Price RC, White AJR (1989) Inclusions in three S–type granite from Southeastern Australia. J Petrol 30:1181–1218Google Scholar
  23. Chen B, Chen ZC, Jahn BM (2009) Origin of mafic enclaves from the Taihang Mesozoic orogen, north China craton. Lithos 110:343–358CrossRefGoogle Scholar
  24. Clemens JD, Wall VJ (1984) Origin and evolution of a peraluminous silicic ignimbrite suite: the Violet Town Volcanics. Lithos 88:354–371Google Scholar
  25. Clemens JD, Wall VJ (1988) Controls on the mineralogy of S-type volcanic and plutonic rocks. Lithos 21:53–66CrossRefGoogle Scholar
  26. Cloos E (1936) Der Sierra-Nevada-pluton in Californien. Neues Jahrb Geol Palaontol-Abh B76:355–450Google Scholar
  27. Dahlquist JA (2002) Mafic microgranular enclaves: early segregation from metaluminous magma (Sierra de Chepes), Pampean Ranges, NW Argentina. J South Am Earth Sci 15:643–655CrossRefGoogle Scholar
  28. Didier J (1973) Granite and their enclaves. Elsevier, LondonGoogle Scholar
  29. Didier J (1984) The problem of enclaves in granitic rocks, a review of recent ideas on their origin. In: Xu KQ, Tu GC (eds) Geology of granite and their metallogenetic relations, proceedings international symposium, Nanjing, October 1982. Science Press, Beijing, pp 137–144Google Scholar
  30. Didier J, Barbarin B (1991) Enclaves and granite petrology, developments in petrology 13. Elsevier, AmsterdamGoogle Scholar
  31. Dodge FCW, Kistler RW (1990) Some additional observations on inclusions in the granitic rocks of the Sierra Nevada. J Geophys Res 95:17841–17848CrossRefGoogle Scholar
  32. Donaire T, Pascual E, Pin C, Duthou JL (2005) Microgranular enclaves as evidence of rapid cooling in granitoid rocks: the case of the Los Pedroches granodiorite, Iberian Massif, Spain. Contrib Mineral Petrol 149:247–265CrossRefGoogle Scholar
  33. Dorais MJ, Whitney JA, Roden MF (1990) Origin of mafic enclaves in the Dinkey Creek Pluton, Central Sierra Nevada batholith, California. J Petrol 31:853–881Google Scholar
  34. Esna-Ashari A, Hassanzadeh J, Wernicke BP, Achmitt AK, Axen G, Horton B (2009) Middle Jurassic flare-up and cretaceous magmatic lull in the central Sanandaj-Sirjan arc, Iran: analogy with the southwestern United States. GSA Annual Meeting, October 2009Google Scholar
  35. Feeley TC, Dungan MA (1996) Compositional and dynamic controls on mafic–silicic interactions at continental arc volcanoes: evidence from Cordon El Guadal, Tatara San Pedro Complex, Chile. J Petrol 37:1547–1577CrossRefGoogle Scholar
  36. Feeley TC, Wilson LF, Underwood SJ (2008) Distribution and compositions magmatic inclusions in the Mount Helen dome, Lassen volcanic center, California: insights into magma chamber processes. Lithos 106:173–189CrossRefGoogle Scholar
  37. Fershtater GB, Borodina NS (1977) Petrology of autholiths in granitic rocks. Int Geol Rev 19:458–468CrossRefGoogle Scholar
  38. Fershtater GB, Borodina NS (1991) Enclaves in the Hercynian granitoids of the Ural Mountains, USSR. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amsterdam, pp 83–94Google Scholar
  39. Flinders J, Clemens JD (1995) Non-linear dynamics and the distribution and compositions of enclaves in granitoid magmas. In: Brown M, Piccoli PM (eds) The origin of granite and related rocks. University of MarylandGoogle Scholar
  40. Fourcade S, Allègre CJ (1981) Trace element behavior in granite genesis: a case study. The calc-alkaline plutonic association from the Quérigut complex (Pyrenees, France). Contrib Mineral Petrol 76:177–195CrossRefGoogle Scholar
  41. Frost TP, Mahood GA (1987) Field, chemical and physical constraints on mafic-felsic magma interaction in the Lamark granodiorite, Sierra Nevada, California. Geol Soc Am Bull 99:272–291CrossRefGoogle Scholar
  42. Furman T, Spera FJ (1985) Commingling of acid and basic magma with implications for the origin of mafic I-type xenolith: field and petrochemical relations of an unusual dike complex at Eagle Lake, Sequoia National Park, California, USA. J Volcanol Geotherm Res 24:151–178CrossRefGoogle Scholar
  43. Gromet LP, Silver LT (1987) REE variations across the Peninsular Ranges Batholith; implications for batholithic petrogenesis and crustal growth in magmatic arcs. J Petrol 28:75–125Google Scholar
  44. Holden P, Halliday AN, Stephens WE, Henney PJ (1991) Chemical and isotopic evidence for major mass transfer between mafic enclaves and felsic magma. Chem Geol 92:135–152CrossRefGoogle Scholar
  45. Ilbeyli N, Pearce JA (2005) Petrogenesis of igneous enclaves in plutonic rocks of the Central Anatolian Crystalline Complex, Turkey. Int Geol Rev 47:1011–1034CrossRefGoogle Scholar
  46. Keskin M (2002) FC-modeler: a Microsoft Excel spreadsheet program for modeling Rayleigh fractionation vectors in closed magmatic systems. Comput Geosci 28:919–928CrossRefGoogle Scholar
  47. Kumar S, Rino V (2006) Mineralogy and geochemistry of microgranular enclaves in Palaeoproterozoic Malanjkhand granitoids, central India: evidence of magma mixing, mingling, and chemical equilibration. Contrib Mineral Petrol 152:591–609CrossRefGoogle Scholar
  48. Masoudi F (1997) Contact metamorphism and pegmatite development in the SW of Arak, Iran. Dissertation, University of LeedsGoogle Scholar
  49. Naney MT, Swanson SE (1980) The effect of Fe and Mg on crystallization in granitic systems. Am Miner 65:639–653Google Scholar
  50. Nash WP, Crecraft HR (1985) Partition coefficients for trace elements in silicic magmas. Geochim Cosmochim Acta 49:2309–2322CrossRefGoogle Scholar
  51. Nelson ST, Montana A (1992) Sieve-textured plagioclase in volcanic rocks produced by rapid decompression. Am Miner 77:1242–1249Google Scholar
  52. Pabst A (1928) Observations on inclusions in the granitic rocks of the Sierra Nevada. Univ Calif Publ Geol Sci 17:325–386Google Scholar
  53. Pascual E, Donaire T, Pin C (2008) The significance of microgranular enclaves in assessing the magmatic evolution of a high-level composite batholith: a case on the Los Pedroches Batholith, Iberian Massif, Spain. Geochem J 42:177–198CrossRefGoogle Scholar
  54. Pearce JA, Norry MJ (1979) Petrogenetic implications of Ti, Zr, Y and Nb variations in volcanic rocks. Contrib Mineral Petrol 69:33–47CrossRefGoogle Scholar
  55. Perugini D, Poli G, Christofides G, Eleftheriadis G (2003) Magma mixing in the Sithonia plutonic complex, Greece: evidence from mafic microgranular enclaves. Mineral Petrol 78:173–200CrossRefGoogle Scholar
  56. Petrelli M, Poli G, Perugini D, Peccerillo A (2005) Petrograph: a new software to visualize, model, and present geochemical data in igneous petrology. Geochem Geophys Geosyst. doi: 10.1029/2005GC000932 Google Scholar
  57. Phillips JA (1880) On concretionary patches and fragments of other rocks contained in granite. J Geol Soc 36:1–21Google Scholar
  58. Phillips GN, Wall VJ, Clemens JD (1981) Petrology of the Strathbogie batholith: a cordierite-bearing granite. Can Mineral 19:47–63Google Scholar
  59. Pin C, Binon M, Belin J, Barbarin B, Clemens JD (1990) Origin of microgranular enclaves in granitoids: equivocal Sr–Nd evidence from Hercynian rocks in the Massif Central (France). J Geophys Res 95:17821–17828CrossRefGoogle Scholar
  60. Platevoet B, Bonin B (1991) Enclaves and mafic-felsic associations in the Permian alkaline province of Corsica, France: physical and chemical interactions between coeval magmas. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amesterdam, pp 191–204Google Scholar
  61. Romick JD, Kay SM, Kay RM (1992) The influence of amphibole fractionation on the evolution of calc-alkaline andesite and dacite tehpra from the central Aleutians, Alaska. Contrib Mineral Petrol 112:101–118CrossRefGoogle Scholar
  62. Ruttner A, Stöcklin J (1967) Geological map of Iran. Geological Survey of Iran, scale 1:1000,000Google Scholar
  63. Sawka WN, Chappell BW (1988) Fractionation of uranium, thorium and rare earth elements in a vertically zoned granodiorite: implications for heat production distributions in the Sierra Nevada batholith, California, U.S.A. Geochim Cosmochim Acta 52:1131–1143CrossRefGoogle Scholar
  64. Sengör AMC (1990) A new model for the late Paleozoic–Mesozoic tectonic evolution of Iran and implications for Oman. In: Robertson AHF, Searle MP, Ries AC (eds) The Geology and Tectonics of the Oman Region, Geological Society of London, Special Publication 22, pp 278–281Google Scholar
  65. Shahbazi H, Siebel W, Pourmoafee M, Ghorbani M, Sepahi AA, Shang CK, Vousoughi Abedini M (2010) Geochemistry and U–Pb zircon geochronology of the Alvand plutonic complex in Sanandaj–Sirjan Zone (Iran): New evidence for Jurassic magmatism. J Asian Earth Sci, accepted paperGoogle Scholar
  66. Silva MMVG, Neiva AMR, Whitehouse MJ (2000) Geochemistry of enclaves and host granite from the Nelas area, central Portugal. Lithos 50:153–170CrossRefGoogle Scholar
  67. Singer BS (1993) Plagioclase zoning in mid-Pleistocene lavas from the Seguam volcanic center, central Aleutian arc, Alaska. Am Miner 78:143–157Google Scholar
  68. Stephens WE, Holden P, Henney PJ (1991) Microdioritic enclaves within the Scottish Caledonian granitoids and their significance for crustal magmatism. In: Didier J, Barbarin B (eds) Enclaves and Granite Petrology, Developments in petrology 13. Elsevier, Amesterdam, pp 125–134Google Scholar
  69. Streckeisen AL (1976) To each plutonic rock its proper name. Earth Sci Rev 12:1–34CrossRefGoogle Scholar
  70. Tepper JH, Kuehner SM (2003) Geochemistry of mafic enclaves and host granitoids from the Chilliwack batholith, Washintong: chemical exchange processes between coexisting mafic and felsic magmas and implications for the interpretation of enclave chemical traits. J Geol 112:349–367CrossRefGoogle Scholar
  71. Troll VR, Donaldson CH, Emeleus CH (2004) Pre-eruptive magma mixing in ash-flow deposits of the Tertiary Rum Igneous Center, Scotland. Contrib Mineral Petrol 147:722–739CrossRefGoogle Scholar
  72. Valizadeh MV, Cantagrel JM (1975) Premieres donnees radiometriques (K-Ar et Rb-Sr) sur les micas du complexe magmatique du Mont Alvand pres Hamedan (Iran Occidental). Comptes Rendus Hebdomadares des Seances de l’Academie des Sciences, Serie D, Sciences Naturelles 281:1083–1086Google Scholar
  73. Vernon RH (1983) Restite, xenoliths and microgranitoid enclaves in granite. J Proc R Soc NSW 116:77–103Google Scholar
  74. Vernon RH (1984) Microgranitoid enclaves: globules of hybrid magma quenched in a plutonic environment. Nature 304:438–439CrossRefGoogle Scholar
  75. Vernon RH (1990) Crystallization and hybridism in microgranitoid enclave magmas: microstructural evidence. J Geophys Res 95:17849–17859CrossRefGoogle Scholar
  76. Vernon RH (1991) Interpretation of microstructures of microgranitoid enclaves. In: Didier J, Barbarin B (eds) Enclaves and granite petrology, developments in petrology 13. Elsevier, Amsterdam, pp 277–291Google Scholar
  77. White AJR, Chappell BW (1977) Ultrametamorphism and granitoid genesis. Tectonophysics 43:7–22CrossRefGoogle Scholar
  78. White AJR, Chappell BW, Wyborn D (1999) Application of the restite model to the Deddick granodiorite and its enclaves—a reinterpretation of the observations and data of Maas et al. J Petrol 40:413–421CrossRefGoogle Scholar
  79. Wiebe RA (1968) Plagioclase stratigraphy: a record of magmatic conditions and events in a granite stock. Am J Sci 266:690–703CrossRefGoogle Scholar
  80. Wiebe RA (1973) Relations between coexisting basaltic and granitic magmas in a composite dike. Am J Sci 273:130–151CrossRefGoogle Scholar
  81. Wiebe RA, Smith D, Sturn 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 38:393–423CrossRefGoogle Scholar
  82. Wilson M (1989) Igneous petrogenesis: a global tectonic approach. Chapman and Hall, LondonCrossRefGoogle Scholar
  83. Wyllie PJ, Cox KG, Biggar GM (1962) The habit of apatite in synthetic systems and igneous rocks. J Petrol 3:238–243Google Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Amir Esna-Ashari
    • 1
  • Jamshid Hassanzadeh
    • 2
  • Mohammad-Vali Valizadeh
    • 1
  1. 1.School of Geology, College of ScienceUniversity of TehranTehranIran
  2. 2.Tectonics Observatory, Division of Geological and Planetary SciencesCalifornia Institute of TechnologyPasadenaUSA

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