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Dating the geologic history of Oman’s Semail ophiolite: insights from U-Pb geochronology

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Abstract

Eclogites from the deepest structural levels beneath the Semail ophiolite, Oman, record the subduction and later exhumation of the Arabian continental margin. Published ages for this high pressure event reveal large discrepancies between the crystallisation ages of certain eclogite-facies minerals and apparent cooling ages of micas. We present precise U-Pb zircon (78.95 ± 0.13 Ma) and rutile (79.6 ± 1.1 Ma) ages for the eclogites, as well as new U-Pb zircon ages for trondhjemites from the Semail ophiolite (95.3 ± 0.2 Ma) and amphibolites from the metamorphic sole (94.48 ± 0.23 Ma). The new eclogite ages reinforce published U-Pb zircon and Rb-Sr mineral-whole rock isochron ages, yet are inconsistent with published interpretations of older 40Ar/39Ar phengite and Sm-Nd garnet dates. We show that the available U-Pb and Rb-Sr ages, which are in tight agreement, fit better with the available geological evidence, and suggest that peak metamorphism of the continental margin occurred during the later stages of ophiolite emplacement.

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References

  • Alabaster T, Pearce JA, Malpas J (1982) The volcanic stratigraphy and petrogenesis of the Oman ophiolite. Contrib Mineral Petrol 81:168–173

    Article  ADS  CAS  Google Scholar 

  • Allemann F, Peters T (1972) The ophiolite-radiolarite belt of the North Oman Mountains. Eclogae Helvetiae 65:657–697

    Google Scholar 

  • Amato JM, Clark MJ, Baumgartner LP, Beard BL (1999) Rapid exhumation of the Zermatt-Saas ophiolite deducted from high-precision Sm-Nd and Rb-Sr geochronology. Earth Planet Sci Lett 171:425–438

    Article  ADS  CAS  Google Scholar 

  • Anczkiewicz R, Thirlwall MF (2003) Improving precision of Sm-Nd garnet dating by H2SO4 leaching: a simple solution to the phosphate inclusion problem. In: Vance D, Müller W, Villa IM (eds) Geochronology: linking the isotopic record with petrology and textures, vol. 220. Geological Society of London Special Publications, pp 83–91

  • Argles TW, Prince CI, Foster GL, Vance D (1999) New garnets for old? Cautionary tales from young mountain belts. Earth Planet Sci Lett 172:301–309

    Article  ADS  CAS  Google Scholar 

  • Blanckenburg FV, Villa IM, Baur H, Morteani G, Steiger RH (1989) Time calibration of a PT-path from the Western Tauern Window, Eastern Alps: the problem of closure temperatures. Contrib Mineral Petrol 101:1–11

    Article  ADS  Google Scholar 

  • Boudier F, Ceuleneer G, Nicolas A (1988) Shear zones, thrusts and related magmatism in the Oman ophiolite: initiation of thrusting on an oceanic ridge. Tectonophysics 151pp

  • Breton JP, Béchennec F, Le Métour J, Moen-Maurel L, Razin P (2004) Eoalpine (Cretaceous) evolution of the Oman Tethyan continental margin: insights from a structural field study in Jebel Akhdar, Oman Mountains. GeoArabia 9:41–58

    Google Scholar 

  • Briqueau L, Mevel C, Boudier F (1991) Sr, Nd and Pb isotopic constraints on the genesis of a calc-alkaline plutonic suite in the Oman mountains related to the obduction process. In: Peters Tea (ed) Ophiolite genesis and evolution of the oceanic lithosphere. Ministry of Petroleum and Minerals, Sultanate of Oman, pp 517–542

    Google Scholar 

  • Bröcker M, Franz L (1998) Rb-Sr isotope studies on Tinos Island (Cyclades, Greece): additional time constraints for metamorphism, extent of infiltration controlled overprinting and deformational activity. Geol Mag 135:369–382

    Article  Google Scholar 

  • Chemenda AI, Mattauer M, Bokun AN (1996) Continental subduction and a mechanism for exhumation of high pressure metamorphic rocks: new modelling and field data from Oman. Earth Planet Sci Lett 143:173–182

    Article  ADS  CAS  Google Scholar 

  • Chen JH, Pallister JS (1981) Lead isotope studies of the Semail Ophiolite, Oman. J Geophys Res 86:2699–2708

    Article  ADS  CAS  Google Scholar 

  • Cherniak DJ (2000) Pb diffusion in rutile. Contrib Mineral Petrol 139:198–207

    ADS  CAS  Google Scholar 

  • Cherniak DJ, Watson EB (2000) Pb diffusion in zircon. Chem Geol 172:5–24

    Article  Google Scholar 

  • Cloos M (1993) Lithospheric buoyancy and collisional orogenesis: subduction of oceanic plateaus, continental margins, island arcs, spreading ridges, and seamounts. Geol Soc Am Bull 105:715–737

    Article  Google Scholar 

  • De Jong K, Feraud G, Wijbrans JR, Ruffet G (1993) 40Ar/39Ar plateau ages of phengite single grains with excess argon: evidence from the Mulhacen Complex, Betic zone, SE Spain. Terra Abstracts 5:388

    Google Scholar 

  • di Vincenzo G, Palmeri R, Talarico F, Andriessen PAM, Ricci CA (1997) Petrology and geochronology of eclogites from the Lanterman Range, Antarctica. J Petrol 38:1391–1417

    Article  Google Scholar 

  • Droop GTR (1987) A general equation for estimating Fe3+ concentrations in ferromagnesian silicates and oxides from microprobe analyses, using stoichiometric criteria. Mineral Mag 51:431–435

    CAS  Google Scholar 

  • El Shazly AK, Coleman RG, Liou JG (1990) Eclogites and blueschists from northeastern Oman: Petrology and P-T evolution. J Petrology 31:629–666

    Google Scholar 

  • El Shazly AK, Liou JG (1991) Glaucophane chloritoid-bearing assemblages from NE Oman: petrologic significance and a petrogenetic grid for high P metapelites. Contrib Mineral Petrol 107:180–201

    Article  ADS  CAS  Google Scholar 

  • El Shazly AK, Sisson VB (1999) Retrograde evolution of eclogites and blueschists from NE Oman: Evidence from fluid inclusions and petrological data. Chem Geol 154:193–223

    Article  CAS  Google Scholar 

  • El Shazly AK, Walker JD (2003) Formation and exhumation of high pressure metamorphic rocks from Oman: New constraints from U-Pb dating of zircon and rutile, Eos Trans. AGU Fall Meeting Supplement 84

  • El-Shazly AK (1995) Petrology of Fe-Mg carpholite-bearing metasediments from NE Oman. J Metamorph Geol 13:379–396

    CAS  Google Scholar 

  • El-Shazly AK (2001b) Are pressures for blueschists and eclogites overestimated? The case from NE Oman. Lithos 56:231–264

    Article  ADS  CAS  Google Scholar 

  • El-Shazly AK, Brocker M, Hacker B, Calvert A (2001a) Formation and exhumation of blueschists and eclogites from NE Oman: new perspectives from Rb-Sr and 40Ar/39Ar dating. J Metamorph Geol 19:233–248

    Article  CAS  Google Scholar 

  • El-Shazly AK, Coleman RG, Liou JG (1990b) Eclogites and blueschists from NE Oman: petrology and PT evolution. J Petrol 31:629–666

    Google Scholar 

  • El-Shazly AK, Lanphere MA (1992) Two high pressure metamorphic events in NE Oman: Evidence from 40Ar/39Ar dating and petrological data. J Geol 100:731–751

    Article  CAS  Google Scholar 

  • El-Shazly AK, Worthing MA, Liou JG (1997) Interlayered eclogites, blueschists and epidote amphibolites from NE Oman: a record of protolith compositional control and limited fluid infiltration. J Petrol 38:1461–1487

    Article  CAS  Google Scholar 

  • Gebauer D, Schertl HP, Brix M, Schreyer W (1997) 35 Ma old ultrahigh-pressure metamorphism and evidence for very rapid exhumation in the Dora Maira Massif, Western Alps. Lithos 41:5–24

    Article  ADS  CAS  Google Scholar 

  • Ghent ED, Stout MZ (1981) Metamorphism at the base of the Semail ophiolite, southeastern Oman mountains. J Geophys Res 86:2557–2571

    ADS  CAS  Google Scholar 

  • Glennie KW, Boeuf MG, Hughes-Clarke MHW, Moody-Stuart M, Pilaar WF, Reinhardt BM (1973) Late Cretaceous nappes in the Oman mountains and their geologic evolution. Bull Am Assoc Petrol Geologist 57:5–27

    Google Scholar 

  • Glennie KW, Boeuf MG, Hughes-Clarke MHW, Moody-Stuart M, PilaarWF, Reinhardt BM (1974) Geology of the Oman mountains, Verhandelingen Koninklijk Nederlands Geologisch Mijnbouwkundidg Genootschap Transactions 31:423

  • Gnos E (1998) Peak metamorphic conditions of garnet amphibolites beneath the Semail Ophiolite: implications for an inverted pressure gradient. Internat Geol Rev 40:281–304

    Google Scholar 

  • Gnos E, Peters T (1993) K-Ar ages of the metamorphic sole of the Semail Ophiolite; implications for ophiolite cooling history. Contrib Mineral Petrol 113:325

    Article  ADS  CAS  Google Scholar 

  • Goffé B, Michard A, Kienast JR, Le Mer O (1988) A case of obduction-related high pressure, low temperature metamorphism in upper crustal nappes, Arabian continental margin, Oman. Tectonophysics 151:363–386

    Article  ADS  Google Scholar 

  • Gray DR, Gregory RT, Miller JM (2000) A new structural profile along the Muscat-Ibra transect, Oman: implications for emplacement of the Samail ophiolite. In: Dilek Y, Moores EM, Elthon D, Nicholas A (eds) Ophiolites and oceanic crust: new insights from field studies and the ocean drilling programme, vol. 349. Special Paper: Boulder, Colorado, Geol Soc Am pp 513–523

  • Gray DR, Gregory RT, Miller JM (2005) Comment on “Structural evolution, metamorphism and restoration of the Arabian continental margin, Saih Hatat region, Oman Mountains” by M.P. Searle et al. J Struc Geol 27:371–374

    Article  ADS  Google Scholar 

  • Gray DR, Hand M, Mawby J, Armstrong RA, Miller JM, Gregory RT (2004a) Sm-Nd and zircon U-Pb ages from garnet-bearing eclogites, NE Oman: constraints on High-P metamorphism. Earth Planet Sci Lett 222:407–422

    Article  ADS  CAS  Google Scholar 

  • Gray DR, Miller JM, Foster DA, Gregory RT (2004b) Transition from subduction- to exhumation-related fabrics in glaucophane-bearing eclogites, Oman: evidence from relative fabric chronology and 40Ar/39Ar ages. Tectonophysics 389:35–64

    Article  ADS  CAS  Google Scholar 

  • Gregory RT, Gray DR, Miller JM (1998) Tectonics of the Arabian margin associated with the formation and exhumation of high-pressure rocks, Sultanate of Oman. Tectonics 17:657–670

    Article  ADS  Google Scholar 

  • Hacker BR (1994) Rapid emplacement of young oceanic lithosphere: argon geochronology of the Oman ophiolite. Science 265:1563–1565

    PubMed  ADS  CAS  Google Scholar 

  • Hacker BR, Mosenfelder JL, Gnos E (1997a) Rapid ophiolite emplacement constrained by geochronology and thermal considerations. Tectonics 15:1230–1247

    Article  ADS  Google Scholar 

  • Hacker BR, Gnos E (1997b) The conundrum of Semail: explaining the metamorphic history. Tectonophysics 279:215–226

    Article  ADS  Google Scholar 

  • Hacker BR, Mosenfelder JL (1996) Metamorphism and deformation along the emplacement thrust of the Semail ophiolite, Oman. Earth Planet Sci Lett 144:435–451

    Article  ADS  CAS  Google Scholar 

  • Harrison TM (1981) Diffusion of 40Ar in hornblende. Contrib Mineral PetrolContrib Mineral Petrol 78:324–331

    Article  CAS  Google Scholar 

  • Harrison TM (1996) 40Ar* diffusion in Fe-rich biotite. Am Mineralogist 81:940–951

    Google Scholar 

  • Hoskin PWO, Black LP (2000) Metamorphic zircon formation by solid-state recrystallization of protolith igneous zircon. J Metamorph Geol 18:423–439

    Article  CAS  Google Scholar 

  • Inger S, Ramsbotham W, Cliff RA, Rex DC (1996) Metamorphic evolution of the Sesia-Lanzo Zone, Western Alps: time constraints from multi-system geochronology. Contrib Mineral Petrol 126:152–168

    Article  ADS  CAS  Google Scholar 

  • Juteau T, Ernewein M, Reuber I, Whitechurch H, Dahl R (1988) Duality of magmatism in the plutonic sequence of the Semail nappe, Oman. Tectonophysics 151:107–136

    Article  ADS  CAS  Google Scholar 

  • Krogh TE (1973) A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopica age determinations. Geochimica et Cosmochimica Acta 37:485–494

    Article  ADS  CAS  Google Scholar 

  • Krogh TE (1982) Improved accuracy of U-Pb ages by the creation of more concordant systems using an air abrasion technique. Geochimica et Cosmochimica Acta 46:637–649

    Article  ADS  CAS  Google Scholar 

  • Le Métour J, de Gramont X, Villey M (1986) Geological Maps of Mascat and Quryat and accompanying notes, Ministry of Petroleum and Minerals, Sultanate of Oman

  • Le Métour J, Rabu D, Tegyey M, Bechennec F, Beurrier M, Villey M (1990) Subduction and obduction: two stages in the Eo-Alpine tectonometamorphic evolution of the Oman mountains. In: Robertson AHF, Searle MP, Ries AC (eds) The geology and tectonics of the Oman region, vol. 49. Special Publication: London, Geological Society, pp 327–339

  • Li S, Wang S, Chen Y, Liu D, Qiu J, Zhou H, Zhang Z (1994) Excess argon in phengite from eclogite: evidence from dating of eclogite minerals by Sm-Nd, Rb-Sr and 40Ar/39Ar methods. Chem Geol 112:343–350

    Article  CAS  Google Scholar 

  • Lippard SJ, Shelton AW, Gass IG (1986) The Ophiolites of Northern Oman, 178 p

  • Ludwig KR (2003) Users manual for isoplot 3. A geochronological toolkit for Microsoft excel. Berkeley Geochronology Centre Special Publication 4

  • Mezger K, Hanson GN, Bohlen SR (1989) High precision U-Pb ages of metamorphic rutile: applications to the cooling history of high-grade terranes. Earth Planet Sci Lett 96:106–118

    Article  ADS  CAS  Google Scholar 

  • Michard A, Goffé B, Saddiqi O, Oberhänsli R, Wendt AS (1994) Late Cretaceous exhumation of the Oman blueschists and eclogites: a two-stage extensional mechanism. Terra Nova 6:404–413

    Google Scholar 

  • Miller JM, Gray DR, Gregory RT (1998) Exhumation of high-pressure rocks in northeastern Oman. Geology 26:235–238

    Article  ADS  Google Scholar 

  • Miller JM, Gray DR, Gregory RT (2002) Geometry and significance of internal windows and regional isoclinal folds in Saih Hatat, Sultanate of Oman. J Struct Geol 24:359–386

    Article  ADS  Google Scholar 

  • Miller JM, Gregory RT, Gray DR, Foster DA (1999) Geological and geochronological constraints on the exhumation of a high-pressure metamorphic terrane, Oman. In: Ring U, Brandon MT, Lister GS, Willett SD (eds) Exhumation processes: normal faulting, ductile flow and erosion, vol. 154. Special Publications, Geological Society of London, pp 241–260

  • Noble SR, Tucker RD, Pharoah TC (1993) Lower Paleozoic and Precambrian igneous rocks from eastern England and their bearing on late Ordovician closure of the Tornquist sea: constraints from U-Pb and Nd isotopes. Geol Mag 130:835–846

    CAS  Google Scholar 

  • Parrish RR, Roddick JC, Loveridge WD, RW S (1987) Uranium-lead analytical techniques at the geochronology laboratory, Geological Survey of Canada, Radiogenic Age and Isotope Studies: Report 1, Volume 87–2, Geological Survey of Canada, pp 3–7

  • Pearce JA, Alabaster T, Shelton AW, Searle MP (1981) The Oman ophiolite as a Cretaceous arc-basin complex: evidence and implications. In: Vine FJ, Smith AG (eds) Extensional tectonics associated with convergent plate boundaries, vol. 300. Roy Soc Lond Philos Trans pp 299–317

  • Prince CI, Kosler J, Vance D, Günther D (2000) Comparison of laser ablation ICP-MS and isotope dilution REE analyses - implications for Sm-Nd garnet geochronology. Chem Geol 168:255–274

    Article  CAS  Google Scholar 

  • Purdy JW, Jäger E (1976) K-Ar ages on rock-forming minerals from the Central Alps: Memoria Instituto Geologica e Mineralogica, Universita di Pavlova 30pp

  • Reddy SM, Kelley SP, Wheeler J (1996) A 40Ar/39Ar laser probe study of micas from the Sesia Zone, Italian Alps: implications for metamorphic and deformation histories. J Metamorph Geol 14:493–508

    Article  CAS  Google Scholar 

  • Reuber I (1988) Complexity of the crustal sequence in the northern Oman ophiolite (Fizh and southern Aswad blocks): the effect of early slicing? Tectonophysics 151:137–165

    Article  ADS  Google Scholar 

  • Roddick JC (1987) Generalized numerical error analysis with applications to geochronology and thermodynamics. Geochimica et Cosmochimica Acta 51:2129–2135

    Article  ADS  Google Scholar 

  • Rubatto D (2002) Zircon trace element geochemistry: Partitioning with garnet and the link between U-Pb ages and metamorphism. Chem Geol 184:123–138

    Article  CAS  Google Scholar 

  • Rubatto D, Gebauer D, Compagnoni R (1999) Dating of eclogite-facies zircons: the age of Alpine metamorphism in the Sesia-Lanzo Zone (Western Alps). Earth Planet Sci Lett 167:141–158

    Article  ADS  CAS  Google Scholar 

  • Searle MP (1980) The metamorphic sheet and underlying volcanic rocks beneath the Oman ophiolite in the northern Oman mountains of Arabia [PhD thesis]. Milton Keynes, Open University

  • Searle MP (1985) Sequence of thrusting and origin of culminations in the northern central Oman mountains. J Struct Geol 1985:129–143

    Article  ADS  Google Scholar 

  • Searle MP, Cox J (1999) Tectonic setting, origin and obduction of the Oman ophiolite. GSA Bulletin 111:104–122

    Article  Google Scholar 

  • Searle MP, Cox J (2002) Subduction zone metamorphism during formation and emplacement of the Semail ophiolite in the Oman mountains. Geol Mag 139:241–256

    Article  CAS  Google Scholar 

  • Searle MP, Malpas J (1982) Petrochemistry and origin of sub-ophiolite metamorphic and related rocks in the Oman Mountains. J Geol Soc Lond 139:235–248

    CAS  Google Scholar 

  • Searle MP, Warren CJ, Parrish RR, Waters DJ (2003) Subduction zone polarity in the Oman Mountains: implications for ophiolite emplacement. In: Dilek Y, Robinson PT (eds) Ophiolites in Earth History, vol. 218. Geological Society of London Special Publications, pp 467–480

  • Searle MP, Warren CJ, Parrish RR, Waters DJ (2004) Structural evolution, metamorphism and restoration of the Arabian continental margin, Saih Hatat region, Oman Mountains. J Struct Geol 26:541–473

    Google Scholar 

  • Searle MP, Warren CJ, Waters DJ, Parrish RR (2005) Reply to: Comment by Gray, Gregory and Miller on “Structural evolution, metamorphism and restoration of the Arabian continental margin, Saih Hatat region, Oman Mountains”. J Struct Geol 27:375–377

    Article  ADS  Google Scholar 

  • Searle MP, Waters DJ, Martin HN, Rex DC (1994) Structure and metamorphism of blueschist-eclogite facies rocks from the northeastern Oman mountains. J Geol Soc Lond 151:555–576

    Google Scholar 

  • Sherlock S, Arnaud NO (1999) Flat plateau and impossible isochrons: apparent 40Ar/39Ar geochronology in a HP terrain. Geochimica et Cosmochimica Acta 56:2851–2872

    Google Scholar 

  • Sherlock S, Kelley SP (2002) Excess argon evolution in HP-LT rocks: a UVLAMP study of phengite and K-free minerals, NW Turkey. Chem Geol 182:619–636

    Article  CAS  Google Scholar 

  • Sherlock S, Kelley SP, Inger S, Harris N, Okay A (1999) 40Ar/39Ar and Rb-Sr geochronology of high-pressure metamorphism and exhumation history of the Tavsanli Zone, NW Turkey. Contrib Mineral Petrol 137:46–58

    Article  ADS  CAS  Google Scholar 

  • Spear FS, Kimball C (1982) RECAMP - a Fortran IV program for estimating Fe3+ in amphiboles. Comput Geosci 10:383–426

    Google Scholar 

  • Stacey JS, Kramers JD (1975) Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet Sci Lett 26:207–201

    Article  ADS  CAS  Google Scholar 

  • Thöni M (2003) Sm-Nd isotope systematics in garnet from different lithologies (Eastern Alps): age results and an evaluation of potential problems for garnet Sm-Nd chronometry (Erratum). Chem Geol 194:353–379

    Article  Google Scholar 

  • Tilton GR, Hopson CA, Wright JE (1981) Uranium-lead isotopic ages of the Semail Ophiolite, Oman, with applications to Tethyan Ridge Tectonics. J Geophys Res 86:2763–2775

    ADS  CAS  Google Scholar 

  • Tilton GR, Schreyer W, Schertle HP (1991) Pb-Sr-Nd isotopic behaviour of deeply subducted crustal rocks from the Dora Maira Massif, Western Alps, Italy II. What is the age of the ultrahigh-pressure metamorphism? Contrib Mineral Petrol 108:22–23

    ADS  CAS  Google Scholar 

  • Timmermann H,Štedrá V, Gerdes A, Noble SR, Parrish RR, Dörr W (2004) The problem of dating high-pressure metamorphism: a U-Pb isotope and geochemical study on eclogites and related rocks of the Mariánské Lázne Complex, Czech Republic. J Petrol 45:1311–1338

    Article  CAS  Google Scholar 

  • Tonarini S, Villa IM, Oberli F, Meier M, Spencer DA, Pognante U, Ramsay JG (1993) Eocene age of eclogite metamorphism in Pakistan Himalaya: implications for India-Eurasia collision. Terra Nova 5:13–20

    Google Scholar 

  • Tucker RD, McKerrow WS (1995) Early Paleozoic chronology: a review in light of new U-Pb zircon ages from Newfoundland and Britain. Can J Earth Sci 32:368–379

    CAS  Google Scholar 

  • Vry J, Baker J, Waight T (2003) In situ Pb-Pb dating of rutile of slowly cooled granulites by LA-MC-ICP-MS: confirmation of the high closure temperature (>600°C) for Pb diffusion in rutile. Geophys Res Abs 5:10199

    Google Scholar 

  • Warren CJ, Parrish RR, Searle MP, Waters DJ (2003) Dating the subduction of the Arabian continental margin beneath the Semail ophiolite, Oman. Geology 31:889–892

    Article  ADS  Google Scholar 

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Acknowledgements

This work was funded by Natural Environment Research Council (NERC) studentship award NER/S/A/2001/06065 to Warren, NERC grant NER/K/S/2000/951 to Searle, and NERC support for the NERC Isotope Geoscience Laboratories. We thank Hilal al Azri, Ministry of Commerce and Industry, Oman, and David and Judy Willis for logistical support during the Oman field seasons. We thank Quentin Crowley, Adrian Wood, and Neil Boulton of NIGL, and Phil Jackson and Norman Charnley in Oxford for their help with sample preparation and analysis. Thanks are extended to A. El-Shazly and K. Goodenough whose detailed and thorough reviews improved and clarified the original manuscript. Editorial assistance was provided by I. Parsons.

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Authors and Affiliations

  1. Department of Earth Science, Oxford University, Parks Road, OX1 3PR, Oxford, UK

    Clare J. Warren, David J. Waters & Michael P. Searle

  2. NERC Isotope Geoscience Laboratories, BGS, Keyworth, NG12 5GG, Nottingham, UK

    Randall R. Parrish

  3. Department of Geology, Leicester University, LE1 7RH, Leicester, UK

    Randall R. Parrish

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  1. Clare J. Warren
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Correspondence to Clare J. Warren.

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Communicated by I. Parsons

Appendix 1: localities of dated samples

Appendix 1: localities of dated samples

Coordinates for the collected sample localities, in lat-long to the WGS84 datum are:

CWO 12 (trondhjemite):

22° .48′.17′′N 58° 30′.36′′E.

CWO 18 (trondhjemite):

23° .29′.08′′N 58° .12′.49′′E.

CWO 38 (trondhjemite):

23° .55′.23′′N 56° .48′.13′′E.

CWO 41 (trondhjemite):

23° .01′.56′′N 57° .25′.41′′E.

CWO 15 (amphibolite):

23° .03′.32′′N 58° .36′.03′′E.

CWO 14 (leucocratic melt):

23° .03′.32′′N 58° .36′.02′′E.

CWO 21 and CWO 23 (eclogites):

23° .27′.30′′N, 58° .46′.48′′E.

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Warren, C.J., Parrish, R.R., Waters, D.J. et al. Dating the geologic history of Oman’s Semail ophiolite: insights from U-Pb geochronology. Contrib Mineral Petrol 150, 403–422 (2005). https://doi.org/10.1007/s00410-005-0028-5

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