Articles | Volume 32, issue 5
https://doi.org/10.5194/ejm-32-521-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-32-521-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Oct 2020
Research article |
| 15 Oct 2020
| 15 Oct 2020
Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation
Felix Hentschel
CORRESPONDING AUTHOR
Department for Earth and Environmental Sciences,
Ludwig-Maximilians-Universität München, Munich, Germany
Emilie Janots
Univ. Grenoble 1, ISTerre, Grenoble, France
Claudia A. Trepmann
Department for Earth and Environmental Sciences,
Ludwig-Maximilians-Universität München, Munich, Germany
Valerie Magnin
Univ. Grenoble 1, ISTerre, Grenoble, France
Pierre Lanari
Univ. Bern, Institute of Geological Sciences, Bern, Switzerland
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We used microscopy and electron backscatter diffraction to analyse the deformation behaviour of feldspar at greenschist facies conditions in mylonitic pegmatites of the Austroalpine basement. There are strong uncertainties about feldspar deformation, mainly because of the varying contributions of different deformation processes. We observed that deformation is mainly the result of coupled fracturing and dislocation glide, followed by growth and granular flow.
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Subducted continental terranes commonly comprise an assembly of subunits that reflect the different tectono-metamorphic histories they experienced in the subduction zone. Our challenge is to unravel how, when, and in which part of the subduction zone these subunits were juxtaposed. Our study documents when and in what conditions re-equilibration took place. Results constrain the main stages of mineral growth and deformation, associated with fluid influx that occurred in the subduction channel.
C. A. Trepmann, J. Renner, and A. Druiventak
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J. Bial and C. A. Trepmann
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C. A. Trepmann and B. Stöckhert
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Accessory minerals
Metamorphic titanite–zircon pseudomorphs after igneous zirconolite
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Zirconium-bearing accessory minerals in UK Paleogene granites: textural, compositional, and paragenetic relationships
Ardennite-bearing mineral association related to sulfide-free ores with chalcophile metals at Nežilovo, Pelagonian Massif, North Macedonia
Cindy L. Urueña, Charlotte Möller, and Anders Plan
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Harvey E. Belkin and Benedetto De Vivo
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Members of the epidote supergroup, epidote, clinozoisite, allanite, and ferriallanite, are described from the calcium–aluminum silicate and thermometamorphic zones in drill cores obtained from the Mofete and San Vito wells in the Campi Flegrei (Italy) geothermal field. Compositional zoning is ubiquitous. The epidote group encompasses nearly the complete range of coupled Al–Fe3+ substitution, and the allanite group is light rare earth element enriched.
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Harvey E. Belkin and Ray Macdonald
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Zr-bearing accessory minerals in granites from Scotland and Northern Ireland, UK, have been examined with a scanning electron microscope and their compositions analyzed by electron microprobe. Four types of zircon were identified: magmatic, late-stage magmatic, and two hydrothermal types. Baddeleyite, dalyite, zirconolite, a eudialyte-group mineral, probable lemoynite, and Zr-bearing aegirine were also identified. These accessory minerals are used to help define the magmatic environment.
Marko Bermanec, Nikita V. Chukanov, Ivan Boev, Božidar Darko Šturman, Vladimir Zebec, and Vladimir Bermanec
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A new locality of ardennite-(As) is described in Nežilovo, North Macedonia. This mineral grows in specific conditions, which makes it useful to reconstructing the conditions of rock formation. Phengite mica that was found also supports this investigation. This explanation results in a new proposal for mineral formula calculation of ardennite-group minerals and reviews the current ardennite-group end-members. This occurrence has developed through three metamorphic stages which are also described.
Cited articles
Abart, R., Heuser, D., and Habler, G.: Mechanisms of myrmekite formation: case study from the Weinsberg granite, Moldanubian zone, Upper Austria, Contrib. Miner. Petrol., 168, 1–15, https://doi.org/10.1007/s00410-014-1074-7, 2014.
Armbruster, T., Bonazzi, P., Akasaka, M., Bermanec, V., Chopin, C., Gieré, R., Heuss-Assbichler, S., Liebscher, A., Menchetti, S., Pan, Y., and Pasero, M.: Recommended nomenclature of epidote-group minerals, Eur. J. Mineral., 2, 551–567, https://doi.org/10.1127/0935-1221/2006/0018-0551, 2006.
Bachmann, F., Hielscher, R., and Schaeben, H.: Texture Analysis with MTEX –
Free and Open Source Software Toolbox, Solid State Phenomen., 160, 63–68,
https://doi.org/10.4028/www.scientific.net/SSP.160.63, 2010.
Bea, F.: Residence of REE, Y, Th and U in granites and crustal protoliths;
implications for the chemistry of crustal melts, J. Petrol., 37,
521–552, https://doi.org/10.1093/petrology/37.3.521, 1996.
Borg, S., Liu, W., Pearce, M., Cleverley, J., and MacRae, C.: Complex mineral
zoning patterns caused by ultra-local equilibrium at reaction interfaces,
Geology, 42, 415–418, https://doi.org/10.1130/G35287.1, 2014.
Borsi, S., Del Moro, A., Sassi, F. P., Zanferrari, A., and Zirpoli, G.: New
geopetrologic and radiometric data on the Alpine history of the Austridic
continental margin south of the Tauern window (Eastern Alps), Mem. di Sci.
Geol., 32, 1–19, 1978.
Borsi, S., Del Moro, A., Sassi, F. P., Visona, D., and Zirpoli, G.: On the
existence of Hercynian aplites and pegmatites in the lower Aurina valley
(Ahrntal, Austrides, Eastern Alps), Neues Jb. Miner., 11,
501–514, 1980.
Bosse, V., Boulvais, P., Gautier, P., Devidal, J.-L., Cherneva, Z., Boulvais, P., Ruffet, G., Paquette, J.-L., Tiepolo, M., Bosse, V., and Gerdjikov, I.: Fluid-induced disturbance of the monazite Th–Pb chronometer: In situ dating and element mapping in pegmatites from the Rhodope (Greece, Bulgaria), Chem. Geol., 261, 286–302, https://doi.org/10.1016/j.chemgeo.2008.10.025, 2008.
Broska, I. and Siman, P.: The breakdown of monazite in the Wesz-Carpathian
Veporic orthogneisses and Tatric granites, Geol. Carpathica, 49, 161–167,
1998.
Broska, I., Williams, T. C., Janák, M., and Nagy, G.: Alteration and
breakdown of xenotime-(Y) and monazite-(Ce) in granitic rocks of the Western
Carpathians, Slovakia, Lithos, 82, 71–83,
https://doi.org/10.1016/j.lithos.2004.12.007, 2005.
Budzyń, B. and Jastrzębski, M.: Monazite stability and the
maintenance of Th-U-total Pb ages during post-magmatic processes in
granitoids and host metasedimentary rocks: A case study from the Sudetes (SW
Poland), Geol. Q., 60, 104–121, https://doi.org/10.7306/gq.1254, 2016.
Budzyń, B. and Kozub-Budzyń, G. A.: The stability of xenotime in
high Ca and Ca-Na systems, under experimental conditions of
250–350∘C and 200–400 MPa: The implications for fluid-mediated
low-temperature processes in granitic rocks, Geol. Q., 59, 316–324,
https://doi.org/10.7306/gq.1223, 2015.
Budzyń, B., Harlov, D. E., Williams, M. L., and Jercinovic, M. J.:
Experimental determination of stability relations between monazite,
fluorapatite, allanite, and REE-epidote as a function of pressure,
temperature, and fluid composition, Am. Mineral., 96, 1547–1567,
https://doi.org/10.2138/am.2011.3741, 2011.
Budzyń, B., Harlov, D. E., Kozub-Budzyń, G. A., and Majka, J.:
Experimental constraints on the relative stabilities of the two systems
monazite-(Ce) – allanite-(Ce) – fluorapatite and xenotime-(Y) –
(Y,HREE)-rich epidote – (Y,HREE)-rich fluorapatite, in high Ca and Na-Ca
environments under P-T conditions of 200–1000, Mineral. Petrol., 111(2),
183–217, https://doi.org/10.1007/s00710-016-0464-0, 2017.
Burn, M., Lanari, P., Pettke, T., and Engi, M.: Non-matrix-matched
standardisation in LA-ICP-MS analysis: General approach, and application to
allanite Th-U-Pb dating, J. Anal. Atom. Spectrom., 32, 1359–1377,
https://doi.org/10.1039/c7ja00095b, 2017.
Cahn, J. W.: The kinetics of cellular segregation reactions, Acta Metall., 7, 18–28, https://doi.org/10.1016/0001-6160(59)90164-6, 1959.
Castelli, D. and Rubatto, D.: Stability of Al- and F-rich titanite in
metacarbonate: petrologic and isotopic constraints from a polymetamorphic
eclogitic marble of the internal Sesia Zone (Western Alps), Contrib.
Mineral. Petr., 142, 627–639, https://doi.org/10.1007/s00410-001-0317-6, 2002.
Didier, A., Bosse, V., Boulvais, P., Bouloton, J., Paquette, J.-L., Montel, J.-M., and Devidal, J.-L.: Disturbance versus preservation of U-Th-Pb ages in monazite during fluid-rock interaction: Textural, chemical and isotopic in situ study in microgranites (Velay Dome, France), Contrib. Miner. Petrol., 165, 1051–1072, https://doi.org/10.1007/s00410-012-0847-0, 2013.
Engi, M.: Petrochronology Based on REE-Minerals: Monazite, Allanite,
Xenotime, Rev.
Mineral. Geochem., 83, 365–418, 2017.
Finger, F., Broska, I., Roberts, Malcolm, P., and Schermair, A.: Replacement
of primary monazite by apatite-allanite-epidote coronas in an amphibolite
facies granite gneiss from the eastern Alps, Am. Mineral., 83, 248–258,
1998.
Förster, H.-J.: The chemical composition of REE-Y-Th-U-rich minerals in
peraluminous accessory granites of the Erzgebirge-Fichtelgebirge region,
Germany. Part I: The monazite-(Ce)-Brabantite solid solution series, Am.
Mineral., 83, 259–272, https://doi.org/10.2138/am-1998-3-409, 1998a.
Förster, H.-J.: The chemical composition of REE-Y-Th-U-rich minerals in
peraluminous accessory granites of the Erzgebirge-Fichtelgebirge region,
Germany. Part II: Xenotime, Am. Mineral., 83, 1302–1315,
https://doi.org/10.2138/am-1998-3-409, 1998b.
Förster, H.-J.: Cerite-(Ce) and Thorian Synchysite from the
Niederbobritzsch Granite, Erzgebirge, Germany: implications for the
differential mobility of the LREE and Th during alteration, Can. Mineral.,
38, 67–79, 2000.
Gieré, R. and Sorensen, S. S.: Allanite and Other REE-Rich Epidote-Group
Minerals, Rev. Mineral. Geochem., 56, 431–493,
https://doi.org/10.2138/gsrmg.56.1.431, 2004.
Goswami-Banerjee, S. and Robyr, M.: Pressure and temperature conditions for
crystallization of metamorphic allanite and monazite in metapelites: a case
study from the Miyar Valley (high Himalayan Crystalline of Zanskar, NW
India), J. Metamorph. Geol., 33, 535–556, https://doi.org/10.1111/jmg.12133, 2015.
Grand'Homme, A., Janots, E., Bosse, V., Seydoux-Guillaume, A.-M. and De
Ascenção Guedes, R.: Interpretation of U-Th-Pb in-situ ages of
hydrothermal monazite-(Ce) and xenotime-(Y): evidence from a large-scale
regional study in clefts from the western alps, Miner. Petrol., 110,
787–807, https://doi.org/10.1007/s00710-016-0451-5, 2016a.
Grand'Homme, A., Janots, E., Seydoux-Guillaume, A.-M., Guillaume, D., Bosse,
V., and Magnin, V.: Partial resetting of the U-Th-Pb systems in
experimentally altered monazite: Nanoscale evidence of incomplete
replacement, Geology, 44, 431–434, https://doi.org/10.1130/G37770.1, 2016b.
Grand'Homme, A., Janots, E., Seydoux-Guillaume, A.-M., Guillaume, D.,
Magnin, V., Hövelmann, J., Höschen, C., and Boiron, M. C.: Mass
transport and fractionation during monazite alteration by anisotropic
replacement, Chem. Geol., 484, 51–68, https://doi.org/10.1016/j.chemgeo.2017.10.008,
2018.
Gregory, C. J., Rubatto, D., Allen, C. M., Williams, I. S., Hermann, J., and
Ireland, T.: Allanite micro-geochronology: A LA-ICP-MS and SHRIMP U-Th-Pb
study, Chem. Geol., 245, 162–182, https://doi.org/10.1016/j.chemgeo.2007.07.029,
2007.
Habler, G., Thöni, M., and Grasemann, B.: Cretaceous metamorphism in the
Austroalpine Matsch Unit (Eastern Alps): The interrelation between
deformation and chemical equilibration processes, Miner. Petrol.,
97, 149–171, https://doi.org/10.1007/s00710-009-0094-x, 2009.
Hansen, E. C. and Harlov, D. E.: Whole-rock, phosphate, and silicate
compositional trends across an amphibolite- to granulite-facies transition,
Tamil Nadu, India, J. Petrol., 48, 1641–1680,
https://doi.org/10.1093/petrology/egm031, 2007.
Harlov, D. E., Wirth, R., and Hetherington, C. J.: Fluid-mediated partial
alteration in monazite?: the role of coupled dissolution-reprecipitation in
element redistribution and mass transfer, Contrib. Mineral. Petr., 162,
329–348, https://doi.org/10.1007/s00410-010-0599-7, 2011.
Hentschel, F., Trepmann, C. A., and Janots, E.: Deformation of feldspar at greenschist facies conditions – the record of mylonitic pegmatites from the Pfunderer Mountains, Eastern Alps, Solid Earth, 10, 95–116, https://doi.org/10.5194/se-10-95-2019, 2019.
Hetherington, C. J. and Harlov, D. E.: Metasomatic thorite and uraninite
inclusions in xenotime and monazite from granitic pegmatites, Hidra
anorthosite massif, southwestern Norway: Mechanics and fluid chemistry, Am.
Mineral., 93, 806–820, https://doi.org/10.2138/am.2008.2635, 2008.
Hofmann, K. H., Kleinschrodt, R., Lippert, R., Mager, D., and Stöckhert,
B.: Geologische Karte des Altkristallins südlich des Tauernfensters
zwischen Pfunderer Tal und Tauferer Tal (Südtirol), Der Schlern, 57,
572–590, 1983.
Janots, E., Engi, M., Berger, A., Allaz, J., Schwarz, J.-O., and Spandler,
C.: Prograde metamorphic sequence of REE minerals in pelitic rocks of the
Central Alps: implications for allanite–monazite–xenotime phase relations
from 250 to 610 ∘C, J. Metamorph. Geol., 26, 509–526,
https://doi.org/10.1111/j.1525-1314.2008.00774.x, 2008.
Kelly, N. M., Harley, S. L., and Möller, A.: Complexity in the behavior and recrystallization of monazite during high-T metamorphism and fluid infiltration, Chem. Geol., 322–323, 192–208, https://doi.org/10.1016/j.chemgeo.2012.07.001, 2012.
Kleinschrodt, R.: Quarzkorngefügeanalyse im Altkristallin südlich
des westlichen Tauernfensters (Südtirol_Italien),
Erlanger Geol. Abhandlungen, 114, 1–82, 1987.
Knoll, T., Schuster, R., Huet, B., Mali, H., Onuk, P., Horschinegg, M.,
Ertl, A., and Giester, G.: Spodumene pegmatites and related leucogranites
from the austroalpine unit (eastern alps, central europe): Field relations,
petrography, geochemistry, and geochronology, Can. Mineral., 56,
489–528, https://doi.org/10.3749/canmin.1700092, 2018.
Lo Pò, D., Braga, R., Massonne, H.-J., Molli, G., Montanini, A., and
Theye, T.: Fluid-induced breakdown of monazite in medium-grade
metasedimentary rocks of the Pontremoli basement (Northern Apennines,
Italy), J. Metamorph. Geol., 34, 63–84, https://doi.org/10.1111/jmg.12171, 2016.
Majka, J. and Budzyń, B.: Monazite breakdown in metapelites from Wedel
Jarlsberg Land, Svalbard - preliminary report, Mineral. Pol., 37, 61–69,
2006.
Mancktelow, N. S., Stöckli, D., Grollimund, B., Müller, W.,
Fügenschuh, B., Viola, G., Seward, D., and Villa, I. M.: The DAV and
Periadriatic fault systems in the Eastern Alps south of the Tauern window,
Int. J. Earth Sci., 90, 593–622, https://doi.org/10.1007/s005310000190, 2001.
Manzotti, P., Rubatto, D., Darling, J., Zucali, M., Cenki-Tok, B., and Engi,
M.: From Permo-Triassic lithospheric thinning to Jurassic rifting at the
Adriatic margin: Petrological and geochronological record in Valtournenche
(Western Italian Alps), Lithos, 146–147, 276–292,
https://doi.org/10.1016/j.lithos.2012.05.007, 2012.
Migdisov, A. A., Williams-jones, A. E. and Wagner, T.: An experimental study
of the solubility and speciation of the Rare Earth Elements ( III ) in
fluoride- and chloride-bearing aqueous solutions at temperatures up to 300
∘ C, Geochim. Cosmochim. Acta, 73(23), 7087–7109,
https://doi.org/10.1016/j.gca.2009.08.023, 2009.
Montel, J.-M., Michèle Veschambre, S. F., Nicollet, C., and Provost, A.:
Electron-microprobe dating of monazite: The story, Chem. Geol., 131, 37–53,
https://doi.org/10.1016/j.chemgeo.2017.11.001, 1996.
Müller, W., Mancktelow, N. S., and Meier, M.: Rb-Sr microchrons of synkinematic mica in mylonites: an example from the DAV fault of the Eastern Alps, Earth Planet. Sci. Lett., 180, 385–397, 2000.
Ondrejka, M., Uher, P., Putiš, M., Broska, I., Bačík, P.,
Konečný, P., and Schmiedt, I.: Two-stage breakdown of monazite by
post-magmatic and metamorphic fluids: An example from the Veporic
orthogneiss, Western Carpathians, Slovakia, Lithos, 142–143, 245–255,
https://doi.org/10.1016/j.lithos.2012.03.012, 2012.
Ondrejka, M., Putiš, M., Uher, P., Schmiedt, I., Pukančik, L., and
Konečný, P.: Fluid-driven destabilization of REE-bearing accessory
minerals in the granitic orthogneisses of North Veporic basement (Western
Carpathians, Slovakia), Miner. Petrol., 1–20,
https://doi.org/10.1007/s00710-016-0432-8, 2016.
Petrík, I. and Konečný, P.: Metasomatic replacement of
inherited metamorphic monazite in a biotite-garnet granite from the
Nízke Tatry Mountains, Western Carpathians, Slovakia: Chemical dating
and evidence for disequilibrium melting, Am. Mineral., 94, 957–974,
https://doi.org/10.2138/am.2009.2992, 2009.
Petrík, I., Broska, I., Lipka, J., and Siman, P.: Granitoid Allanite-(Ce): Substitution Relations, Redox Conditions and Ree Distributions (on an Example of I-Type Granitoids, Western Carpathians, Slovakia), Geol. Carpathica, 46, 79–94, 1995.
Putnis, A.: Mineral replacement reactions: from macroscopic observations to
microscopic mechanisms, Mineral. Mag., 66, 689–708,
https://doi.org/10.1180/0026461026650056, 2002.
Putnis, A.: Mineral Replacement Reactions, Rev. Mineral. Geochem.,
70, 87–124, https://doi.org/10.2138/rmg.2009.70.3, 2009.
Putnis, A. and Austrheim, H.: Fluid-Induced Processes: Metasomatism and
Metamorphism, Front. Geofluids, 11, 254–269,
https://doi.org/10.1002/9781444394900.ch18, 2010.
Pyle, J. M. and Spear, F. S.: An empirical garnet (YAG) – xenotime
thermometer, Contrib. Mineral. Petr., 138, 51–58,
https://doi.org/10.1007/PL00007662, 2000.
Pyle, J. M., Spear, F. S., Rudnick, R. L., and McDonough, W. F.:
Monazite–Xenotime–Garnet Equilibrium in Metapelites and a New
Monazite–Garnet Thermometer, J. Petrol., 42, 2083–2107,
https://doi.org/10.1016/0022-328X(90)80211-H, 2001.
Raimondo, T., Payne, J., Wade, B., Lanari, P., Clark, C., and Hand, M.: Trace
element mapping by LA-ICP-MS: assessing geochemical mobility in garnet,
Contrib. Mineral. Petr., 172, 1–22, https://doi.org/10.1007/s00410-017-1339-z,
2017.
Regis, D., Cenki-Tok, B., Darling, J., and Engi, M.: Redistribution of REE,
Y, Th and U at high pressure: Allanite-forming reactions in impure
meta-quartzites (Sesia Zone, Western Italian Alps), Am. Mineral., 97,
315–328, 2012.
Schmid, S. M., Fügenschuh, B., Kissling, E., and Schuster, R.: Tectonic
map and overall architecture of the Alpine orogen, Eclogae Geol. Helv.,
97, 93–117, https://doi.org/10.1007/s00015-004-1113-x, 2004.
Schulz, B.: Microstructural Evolution of Metapelites from the Austroalpine
Basement North of Staller Sattel During Pre-Alpine and Alpine Deformation
and Metamorphism (Eastern Tyrol, Austria), Jahrb. Geol. Bundesanstalt,
137, 197–212, 1994.
Seydoux-Guillaume, A.-M., Paquette, J.-L., Wiedenbeck, M., Montel, J.-M., and
Heinrich, W.: Experimental resetting of the U-Th-Pb systems in monazite,
Chem. Geol., 191, 165–181, 2002.
Seydoux-Guillaume, A.-M., Montel, J.-M., Bingen, B., Bosse, V., Parseval, P.
De, Paquette, J., Janots, E., and Wirth, R.: Low-temperature alteration of
monazite?: Fluid mediated coupled dissolution – precipitation, irradiation
damage, and disturbance of the U-Pb and Th-Pb chronometers, Chem. Geol.,
330–331, 140–158, https://doi.org/10.1016/j.chemgeo.2012.07.031, 2012.
Skrzypek, E., Sakata, S., and Sorger, D.: Alteration of magmatic monazite in
granitoids from the Ryoke belt (SW Japan): Processes and consequences, Am.
Mineral., 105, 538–554, 2020.
Spear, F. S. and Pyle, J. M.: Apatite, Monazite, and Xenotime in Metamorphic
Rocks, Rev. Mineral. Geochem., 48, 293–335,
https://doi.org/10.2138/rmg.2002.48.7, 2002.
Spruzeniece, L., Piazolo, S., and Maynard-Casely, H. E.: Deformation-resembling microstructure created by fluid-mediated dissolution-precipitation reactions, Nat. Commun., 8, 1–9, https://doi.org/10.1038/ncomms14032, 2017.
Steenken, A. and Siegesmund, S.: Cooling and exhumation of the Rieserferner
Pluton (Eastern Alps, Italy/Austria), Int. J. Earth Sci., 91, 799–817,
https://doi.org/10.1007/s00531-002-0260-4, 2002.
Stöckhert, B.: K-Ar determinations on muscovites and phengites from
deformed pegmatites, and the minimum age of Old Alpine deformation in the
Austridic basement to the South of the western Tauern Window (Ahrn valley,
Southern Tyrol, Eastern Alps), Neues Jb. Miner.,
150, 103–120, 1984.
Stöckhert, B.: Pre-Alpine history of the Austridic basement to the south
of the western Tauern Window (Southern Tyrol, Italy) – Caledonian versus
Hercynian event, Neues Jahrb. Geol. P. M., 10, 618–642, 1985.
Stöckhert, B.: Das Uttenheimer Pegmatit-Feld (Ostalpines Altkristallin,
Südtirol) Genese und alpine Überprägung, Erlanger Geol.
Abhandlungen, 114, 83–106, 1987.
Suzuki, K. and Kato, T.: CHIME dating of monazite, xenotime, zircon and
polycrase: Protocol, pitfalls and chemical criterion of possibly discordant
age data, Gondwana Res., 14, 569–586, https://doi.org/10.1016/j.gr.2008.01.005,
2008.
Tropper, P., Manning, C. E., and Harlov, D.: Solubility of CePO4 monazite and
YPO4 xenotime in H2O and H2O – NaCl at 800 ∘C and 1 GPa:
Implications for REE and Y transport during high-grade metamorphism, Chem.
Geol., 282, 58–66, https://doi.org/10.1016/j.chemgeo.2011.01.009, 2011.
Tropper, P., Manning, C. E., and Harlov, D. E.: Experimental determination of
CePO4 and YPO4 solubilities in H2O – NaF at 800 ∘C and 1 GPa:
implications for rare earth element transport in high-grade metamorphic
fluids, Geofluids, 1–9, https://doi.org/10.1111/gfl.12031, 2013.
Upadhyay, D. and Pruseth, K. L.: Fluid-induced dissolution breakdown of
monazite from Tso Morari complex, NW Himalayas: evidence for immobility of
trace elements, Comput. Geosci., 164, 303–316,
https://doi.org/10.1007/s00410-012-0739-3, 2012.
Varga, J., Raimondo, T., Daczko, N. R., and Adam, J.: Experimental alteration
of monazite in granitic melt: Variable U – Th – Pb and REE mobility during
melt-mediated coupled dissolution-precipitation, Chem. Geol., 544, 119602,
https://doi.org/10.1016/j.chemgeo.2020.119602, 2020.
Villa-Vialaneix, N., Montel, J.-M., and Seydoux-Guillaume, A.-M.: NiLeDAM:
Monazite Datation for the NiLeDAM team, Packag. version 0.1, R, 2013.
von Blanckenburg, F.: Combined high-precision chronometry and geochemical
tracing using accessory minerals: applied to the Central-Alpine Bergell
intrusion (central Europe), Chem. Geol., 100, 19–40, 1992.
Wang, Y. and Marino, E.: Dynamic model of oscillatory zoning of trace
elements in calcite: Double layer, inhibition, and self-organization,
Geochim. Cosmochim. Ac., 56, 587–596, 1992.
Whitney, D. L. and Evans, B. W.: Abbreviations for names of rock-forming
minerals, Am. Mineral., 95, 185–187, https://doi.org/10.2138/am.2010.3371, 2010.
Williams, M. L., Jercinovic, M. J., and Hetherington, C. J.: Microprobe
Monazite Geochronology: Understanding Geologic Processes by Integrating
Composition and Chronology, Annu. Rev. Earth Pl. Sc., 35, 137–175,
https://doi.org/10.1146/annurev.earth.35.031306.140228, 2007.
Williams, M. L., Jercinovic, M. J., Harlov, D. E., Budzyń, B., and Hetherington, C. J.: Resetting monazite ages during fluid-related alteration, Chem. Geol., 283, 218–225, https://doi.org/10.1016/j.chemgeo.2011.01.019, 2011.
Wing, B. A., Ferry, J. M., and Harrison, T. M.: Prograde destruction and
formation of monazite and allanite during contact and regional metamorphism
of pelites: petrology and geochronology, Contrib. Mineral. Petr., 145,
228–250, https://doi.org/10.1007/s00410-003-0446-1, 2003.
Wölfler, A., Dekant, C., Frisch, W., Danišík, M., and Frank, W.: Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry, Austrian J. Earth Sci., 108, 18–35, https://doi.org/10.17738/ajes.2015.0002, 2015a.
Wölfler, A., Frisch, W., Fritz, H., Danišik, M., and Wölfler, A.:
Ductile to brittle fault zone evolution in Austroalpine units to the
southeast of the Tauern Window (Eastern Alps), Swiss J. Geosci., 108,
239–251, https://doi.org/10.1007/s00015-015-0193-0, 2015b.
Short summary
We analysed apatite–allanite/epidote coronae around monazite and xenotime in deformed Permian pegmatites from the Austroalpine basement. Microscopy, chemical analysis and EBSD showed that these coronae formed by dissolution–precipitation processes during deformation of the host rocks. Dating of monazite and xenotime confirmed the magmatic origin of the corona cores, while LA-ICP-MS dating of allanite established a date of ~ 60 Ma for corona formation and deformation in the Austroalpine basement.
We analysed apatite–allanite/epidote coronae around monazite and xenotime in deformed Permian...
