Geological Society, London, Special Publications SP 0305-8719 2041-4927 04 08 2019 04 17 2019 478 1 A treasure chest full of nanogranitoids: an archive to investigate crustal melting in the Bohemian Massif Silvio Ferrero Institut für Erd- und Umweltwissenschaften, Universität Potsdam, 14476 Potsdam, Germany Museum für Naturkunde (MfN), Leibniz-Institut für Evolutions- und Biodiversitätsforschung, 10115 Berlin, Germany https://orcid.org/0000-0002-9948-3676 Patrick J. O’Brien Institut für Erd- und Umweltwissenschaften, Universität Potsdam, 14476 Potsdam, Germany Alessia Borghini Institut für Erd- und Umweltwissenschaften, Universität Potsdam, 14476 Potsdam, Germany https://orcid.org/0000-0002-0857-627X Bernd Wunder Helmholtz-Zentrum Potsdam, GFZ, D-14473 Potsdam, Germany Markus Wälle Memorial University, St. John's, Newfoundland, Canada https://orcid.org/0000-0002-3526-8424 Christina Günter Institut für Erd- und Umweltwissenschaften, Universität Potsdam, 14476 Potsdam, Germany Martin A. Ziemann Institut für Erd- und Umweltwissenschaften, Universität Potsdam, 14476 Potsdam, Germany Abstract

The central European Bohemian Massif has undergone over two centuries of scientific investigation which has made it a pivotal area for the development and testing of modern geological theories. The discovery of melt inclusions in high-grade rocks, either crystallized as nanogranitoids or as glassy inclusions, prompted the re-evaluation of the area with an ‘inclusionist’ eye. Melt inclusions have been identified in a wide range of rocks, including felsic/perpotassic granulites, migmatites, eclogites and garnet clinopyroxenites, all the result of melting events albeit over a wide range of pressure/temperature conditions (800–1000°C/0.5–5 GPa). This contribution provides an overview of such inclusions and discusses the qualitative and quantitative constraints they provide for melting processes, and the nature of melts and fluids involved in these processes. In particular, data on trace-element signatures of melt inclusions trapped at mantle depths are presented and discussed. Moreover, experimental re-homogenization of nanogranitoids provided microstructural criteria allowing assessment of the conditions at which melt and host are mutually stable during melting. Overall this work aims to provide guidelines and suggestions for petrologists wishing to explore the fascinating field of melt inclusions in metamorphic terranes worldwide, based on the newest discoveries from the still-enigmatic Bohemian Massif.

 09 17 2018 04 17 2019 13 38 10.1144/SP478.19 1 10.1144/crossmark-policy www.lyellcollection.org true 2018-09-17 Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659 FE 1527/2-1 and FE 1527/2-2 Alexander von Humboldt-Stiftung http://dx.doi.org/10.13039/100005156 Post-doctoral Fellowship https://doi.org/10.15223/policy-002 10.1144/SP478.19 https://www.lyellcollection.org/doi/10.1144/SP478.19 https://www.lyellcollection.org/doi/pdf/10.1144/SP478.19 https://pubs.geoscienceworld.org/UrlRedirectHandler.ashx?routename=books&chapterdoi=10.1144/SP478.19&request=chapter 10.1016/j.chemgeo.2006.07.014 10.1093/petrology/egp095 10.1093/petrology/egs018 Contributions to Mineralogy and Petrology Acosta-Vigil A. 1 24 2016 The composition of nanogranitoids in migmatites overlying the Ronda peridotites (Betic Cordillera, S Spain): the anatectic history of a polymetamorphic basement Acosta-VigilA., BarichA. 2016. The composition of nanogranitoids in migmatites overlying the Ronda peridotites (Betic Cordillera, S Spain): the anatectic history of a polymetamorphic basement. Contributions to Mineralogy and Petrology, 24, 1–31, https://doi.org/10.1007/s00410-016-1230-3 10.1016/j.lithos.2017.05.020 Paper presented at the AGU Fall Meeting Acosta-Vigil A. 2017 Acosta-VigilA., StöckhertB., HermannJ., YaxleyG., CesareB. & BartoliO. 2017b. Remelting of nanogranitoids in UHP felsic granulites from Erzgebirge (Bohemian Massif, Germany). Paper presented at the AGU Fall Meeting, New Orleans. 10.1016/j.lithos.2006.09.001 10.1016/0024-4937(91)90018-G 10.1016/B978-0-08-095975-7.01106-2 10.1007/s00410-006-0104-5 10.1007/s00410-008-0291-3 Publications of the Institute of Geophysics, Polish Academy of Sciences, A Bakun-Czubarow N. 215 19 1991 Geodynamic significance of the Variscan HP eclogite–granulite series of the Złote Mountains in the Sudetes (SW Poland) Bakun-CzubarowN. 1991. Geodynamic significance of the Variscan HP eclogite–granulite series of the Złote Mountains in the Sudetes (SW Poland). Publications of the Institute of Geophysics, Polish Academy of Sciences, A, 19, 215–244. 10.1016/j.lithos.2014.08.003 10.1111/gfl.12038 10.1130/G33455.1 10.1016/j.epsl.2014.03.031 10.2138/am-2016-5541CCBYNCND 10.1017/S0263593300006453 10.1007/s004100050232 Fluid Inclusions: Analysis and Interpretation Bodnar R.J. 81 2003 BodnarR.J. 2003. Introduction to aqueous fluid systems. In: SamsonI., AndersonA. & MarshallD. (eds) Fluid Inclusions: Analysis and Interpretation. Mineralogical Association of Canada, Quebec City, Short Course, 32, 81–99. 10.1016/j.chemgeo.2013.05.028 Geology Borghini A. Granitoid melt inclusions in orogenic peridotite and origin of garnet clinopyroxenite BorghiniA., FerreroS., WunderB., LaurentO., O'BrienP.J. & ZiemannM.A. In press. Granitoid melt inclusions in orogenic peridotite and origin of garnet clinopyroxenite. Geology, https://doi.org/10.1130/G45316.1 10.2138/am-1995-3-404 10.1111/j.1468-0092.1989.tb00200.x 10.1086/629837 10.1111/j.1525-1314.2009.00823.x 10.7306/gq.1232 10.1144/SP412.1 10.1093/petrology/34.3.427 10.1007/s004100050110 Working with Migmatites Cesare B. 37 2008 10.3749/9780921294740.ch03 CesareB. 2008. Crustal melting: working with enclaves. In: SawyerE.W. & BrownM. (eds) Working with Migmatites. Mineralogical Association of Canada, Quebec City, Short Course, 38, 37–55. 10.1016/S1464-1895(01)00053-9 10.1180/minmag.1997.061.404.03 10.1007/s00410-004-0646-3 10.1016/j.chemgeo.2006.07.013 10.1130/G25759A.1 10.3809/jvirtex.2011.00268 10.1016/j.lithos.2015.09.028 10.1093/petrology/egt036 10.1130/focus072009.1 Neues Jahrbuch für Geologie und Paläontologie Don J. 159 179 1990 10.1127/njgpa/179/1990/159 Lithology and tectonics of the Orlica–Śnieżnik Dome, Sudetes; recent state of knowledge DonJ., DumiczM., WojciechowskaI. & ŻelaźniewiczA. 1990. Lithology and tectonics of the Orlica–Śnieżnik Dome, Sudetes; recent state of knowledge. Neues Jahrbuch für Geologie und Paläontologie, 179, 159–188. 10.1016/j.lithos.2013.07.015 Journal of Petrology Ferrero S. Micropetrology: are inclusions in minerals grains of truth? FerreroS. & AngelR.J. In press. Micropetrology: are inclusions in minerals grains of truth? Journal of Petrology, https://doi.org/10.1093/petrology/egy075 10.1016/j.lithos.2010.09.004 10.1111/j.1525-1314.2011.00968.x 10.1111/jmg.12068 10.1130/G36534.1 10.1016/j.epsl.2016.08.043 10.1007/s00410-015-1220-x 10.2138/am-2018-6214 10.1144/GSL.SP.2000.179.01.05 Geological Society, London, Special Publications Orogenic Processes: Quantification and Modelling in the Variscan Belt Franke W. 2000 FrankeW., HaakV., OnkenO. & TannerD. (eds) 2000. Orogenic Processes: Quantification and Modelling in the Variscan Belt. Geological Society, London, Special Publications, 179, https://doi.org/10.1144/GSL.SP.2000.179.01.01 American Mineralogist Fuhrman M.L. 201 73 1988 Ternary-feldspar modelling and thermometry FuhrmanM.L. & LindsleyD.H. 1988. Ternary-feldspar modelling and thermometry. American Mineralogist, 73, 201–215. 10.1016/j.jseaes.2017.03.036 10.1144/0016-764904-078 Laser Ablation ICP-MS in the Earth Sciences: Current Practices and Outstanding Issues Guillong M. 328 2008 GuillongM., MeierD.L., AllanM.M., HeinrichC.A. & YardleyD. 2008. SILLS: A Matlab-based program for the reduction of laser ablation ICP-MS data of ho-mogeneous materials and inclusions. In: SylvesterP. (ed.) Laser Ablation ICP-MS in the Earth Sciences: Current Practices and Outstanding Issues, Mineralogical Association of Canada, Quebec City, Short Course, 40, 328–333. 10.1016/S0009-2541(01)00372-2 10.1016/S0012-821X(01)00321-1 10.2138/am-2001-1001 10.1130/0016-7606(1976)87<1513:FITEOG>2.0.CO;2 10.1093/petrology/egn028 10.2113/gselements.7.4.247 10.1016/j.gsf.2014.01.004 10.1017/S0263593300000985 Journal of Geosciences Janoušek V. 73 52 2007 Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited JanoušekV., KrennE., FingerF., MikovaJ. & FrýdaJ. 2007. Hyperpotassic granulites from the Blanský les Massif (Moldanubian Zone, Bohemian Massif) revisited. Journal of Geosciences, 52, 73–112. 10.1007/978-3-642-61049-3 10.1093/petroj/40.4.601 10.1007/s004100050544 10.1016/j.lithos.2010.11.003 10.1130/G31971.1 10.2138/am.2014.4889 American Mineralogist Koziol A.N. 216 73 1988 Redetermination of the anorthite breakdown reaction and improvement of the plagioclase–garnet–AlrSiOr–quartz geobarometer KoziolA.N. & NewtonR.C. 1988. Redetermination of the anorthite breakdown reaction and improvement of the plagioclase–garnet–AlrSiOr–quartz geobarometer. American Mineralogist, 73, 216–223. 10.1007/s004100050013 10.1007/s005310000139 10.1046/j.1525-1314.1996.03710.x 10.1130/G32316.1 10.1016/j.gr.2013.07.003 10.1111/j.1525-1314.2006.00687.x 10.1111/j.1525-1314.2005.00566.x 10.1007/BF00371463 10.1016/j.lithos.2013.06.010 Magmas, Fluids and Ore Deposits Lowenstern J. 71 1995 LowensternJ. 1995. Applications of silicate-melt inclusions to the study of magmatic volatiles. In: ThompsonJ.F.H. (ed.) Magmas, Fluids and Ore Deposits. Mineralogical Association of Canada, Quebec City, Short Course, 23, 71–99. 10.2113/gselements.12.2.91 10.1016/j.chemgeo.2008.04.012 10.1127/0935-1221/2001/0013-0565 Geolines Massonne H.-J. 18 23 2011 Occurrences and PT conditions of high and ultrahigh pressure rocks in the Bohemian Massif MassonneH.-J. 2011. Occurrences and PT conditions of high and ultrahigh pressure rocks in the Bohemian Massif. Geolines, 23, 18–26. 10.1180/EMU-notes.5.6 Geologiska Föreningens i Stockholm Förhandlingar Matte P. 209 120 1998 Continental subduction and exhumation of HP rocks in Paleozoic orogenic belts: uralides and Variscides MatteP. 1998. Continental subduction and exhumation of HP rocks in Paleozoic orogenic belts: uralides and Variscides. Geologiska Föreningens i Stockholm Förhandlingar, 120, 209–222. 10.1016/0040-1951(90)90279-H 10.1007/s004100050302 10.2138/am-1996-9-1016 10.2138/am.2005.1769 10.1127/0935-1221/2000/0012-0495 10.1144/GSL.SP.2000.179.01.22 10.1046/j.1525-1314.2003.00420.x 10.1144/gsjgs.150.2.0355 10.1130/0091-7613(1999)027<0531:ROTEAT>2.3.CO;2 10.1016/j.rgg.2007.10.009 10.1016/j.lithos.2014.05.025 10.1515/9781501508271 10.2113/gselements.7.4.229 Geophysical Research Abstracts Schantl P. EGU2018 20 2018 Garnet growth history in granulites from the southeastern Moldanubain Zone (Bohemian Massif) revealed by Zr in rutile thermometry, mineral inclusions and trace element zoning SchantlP., HauzenbergerC., FingerF. & LinnerM. 2018. Garnet growth history in granulites from the southeastern Moldanubain Zone (Bohemian Massif) revealed by Zr in rutile thermometry, mineral inclusions and trace element zoning. Geophysical Research Abstracts, 20, EGU2018–EG10054. 10.1130/G35290.1 10.1144/SP405.15 10.1093/petrology/egt015 10.1016/j.chemgeo.2007.11.005 Geophysical Research Abstracts Słupski P. EGU2018 20 2018 Former melt inclusions in garnets from granulites of the Góry Sowie Block, NE Bohemian Massif SłupskiP., FerreroS. & WalczakK. 2018. Former melt inclusions in garnets from granulites of the Góry Sowie Block, NE Bohemian Massif. Geophysical Research Abstracts, 20, EGU2018–EG15214. Journal of Petrology Sorger D. egy063 Carboniferous polymetamorphism recorded in paragneiss-migmatites from the Bavarian Unit (Moldanubian Superunit, Upper Austria): implications for the tectonothermal evolution at the end of the Variscan orogeny SorgerD., HauzenbergerC., LinnerM., IglsederC. & FingerF. In press. Carboniferous polymetamorphism recorded in paragneiss-migmatites from the Bavarian Unit (Moldanubian Superunit, Upper Austria): implications for the tectonothermal evolution at the end of the Variscan orogeny. Journal of Petrology, egy063, corrected proof online June 22, 2018, https://doi.org/10.1093/petrology/egy063 Geological Society of America Special Papers The Web of Geological Sciences: Advances, Impacts, and Interactions II Spear F.S. 31 2016 SpearF.S., PattisonD.R.M. & CheneyJ.T. 2016. The metamorphosis of metamorphic petrology. In: BickfordM.E. (ed.) The Web of Geological Sciences: Advances, Impacts, and Interactions II. Geological Society of America Special Papers, 523, 31–74, https://doi.org/10.1130/2016.2523(02) Journal of Petrology Stepanov A.S. 1531 57 2016 Melting history of an ultrahigh-pressure paragneiss revealed by multiphase solid inclusions in garnet, Kokchetav Massif, Kazakhstan StepanovA.S., HermannJ., RubattoD., KorsakovA.V. & DanyushevskyL.V. 2016. Melting history of an ultrahigh-pressure paragneiss revealed by multiphase solid inclusions in garnet, Kokchetav Massif, Kazakhstan. Journal of Petrology, 57, 1531–1554, https://doi.org/10.1093/petrology/egw049 10.1111/j.1525-1314.2004.00508.x 10.1111/j.1525-1314.2011.00964.x 10.1130/0091-7613(2001)029<0391:MDCPFS>2.0.CO;2 10.1111/j.1525-1314.2009.00835.x 10.1144/GSL.SP.1989.042.01.19 10.1016/S0009-2541(00)00324-7 10.1111/j.1468-0092.1983.tb00344.x Rendiconti della Societa Italiana di Mineralogia e Petrologia Thompson A.B. 41 43 1988 Dehydration melting of crustal rocks ThompsonA.B. 1988. Dehydration melting of crustal rocks. Rendiconti della Societa Italiana di Mineralogia e Petrologia, 43, 41–60. 10.1016/S0024-4937(00)00036-0 Precambrian Research Tsunogae T. 198 162 2008 Fluid characteristics of high- to ultrahigh-temperature metamorphism in southern India: a quantitative Raman spectroscopic study TsunogaeT., SantoshM. & DubessyJ. 2008. Fluid characteristics of high- to ultrahigh-temperature metamorphism in southern India: a quantitative Raman spectroscopic study. Precambrian Research, 162, 198–211, https://doi.org/10.1016/j.precamres.2007.07.026 10.1016/S0985-3111(00)01045-7 10.1130/2011.1207(01) 10.1007/BF00307272 10.1007/BF01041756 10.3190/jgeosci.157 10.1016/j.lithos.2017.09.013 Geophysical Research Abstracts Wannhoff I. EGU2018 20 2018 Evidence for fluid–melt immiscibility during partial melting in the Oberpfalz migmatites, Moldanubian Zone (Bohemian Massif) WannhoffI., FerreroS., O'BrienP.J., ZiemannM.A. & HechtL. 2018. Evidence for fluid–melt immiscibility during partial melting in the Oberpfalz migmatites, Moldanubian Zone (Bohemian Massif). Geophysical Research Abstracts, 20, EGU2018–EGU1673. 10.1016/j.lithos.2014.08.021 Neue Schriften Gesellschaft naturforschender Freunde Weiß C.S. 342 4 1803 Über die Gebirgsart des sächsichen Erzgebirges, welche unter dem Namen Weiss-Stein neuerlich bekannt gemacht worden ist WeißC.S. 1803. Über die Gebirgsart des sächsichen Erzgebirges, welche unter dem Namen Weiss-Stein neuerlich bekannt gemacht worden ist. Neue Schriften Gesellschaft naturforschender Freunde, 4, 342–366. 10.2138/am.2010.3371 10.1016/j.jseaes.2017.03.037 10.1016/j.lithos.2017.01.009