Lu-Hf garnet geochronology of eclogites from the Balma Unit (Pennine Alps): Implications for Alpine paleotectonic reconstructions

Swiss Journal of Geosciences

Volumn 101, Issue SUPPL. 1, 2008, Pages

  Herwartz, Daniel ^a   Münker, Carsten ^a,b   Scherer, Erik E ^b   Nagel, Thorsten J ^a   Pleuger, Jan ^a   Froitzheim, Nikolaus ^a  

^a UNIVERSITY OF BONN   (Germany)

^b UNIVERSITY OF MÜNSTER   (Germany)

Author keywords

Balma Unit; Lu Hf geochronology; Monte Rosa; Tectonic evolution; Western Alps

Indexed keywords

CONFERENCE PROCEEDING; ECLOGITE; ELECTRON PROBE ANALYSIS; GARNET; GEOCHRONOLOGY; HAFNIUM; LUTETIUM; MID-OCEAN RIDGE; PALEOGEOGRAPHY; RECONSTRUCTION; SHRIMP DATING; TECTONIC EVOLUTION; URANIUM-LEAD DATING;

ALPS; CENTRAL ALPS; EURASIA; EUROPE; PENNINE ALPS;

EID: 57849145569     PISSN: 16618726     EISSN: 16618734     Source Type: Journal    
DOI: 10.1007/s00015-008-1292-y     Document Type: Conference Paper

References (84)

1. 39Ar constraints and implications for the Western Alps. Journal of Metamorphic Geology 20, 599-618.
2. Albarède, F., Telouk, P., Blichert-Toft, J., Boyet, M., Agranier, A., Nelson, B., 2004: Precise and accurate isotopic measurements using multiple-collector IcPMs. Geochemica et cosmochemica Acta 68, 2725-2744.
3. Avigad, D., Chopin, C., Goffe, B. & Michard, A. 1993: Tectonic model for the evolution of the Western Alps. Geology 21, 659-662.
4. Becker, H. 1997: Sm-Nd garnet ages and cooling history of high-temperature garnet peridotite massifs and high-pressure granulites from lower Austria. contributions to Mineralogy and Petrology 127, 224-236.
5. Bill, M., O'Dogherty, L., Guex, J., Baumgartner, P. O. & Masson, H. 2001: Radiolarite ages in Alpine-Mediteranean ophiolites: Constraints on the oceanic spreading and the tethys-Atlantic connection. Geological society of America bulletin 113, 129-143.
6. Bizzarro, M., Baker, J.A., Haack, H., Ulfbeck, D. & Rosing, M. 2003: Early history of Earth's crust-mantle system inferred from hafnium isotopes in chondrites. Nature 421, 931-933.
7. Blichert-toft J. & Albarède F. 1997: The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system. Earth and Planetary science Letters 148, 243-258.
8. 76Hf in eucrites and the differentiation of the HED parent body. Earth and Planetary science Letters 204, 167-181.
9. Borghi, A., Compagnoni, R. & Sandrone, R. 1996: Composite P-t paths in the internal Penninic Massifs of the western Alps: Petrological constraints to their thermo-mechanical evolution, Eclogae geologicae Helvetiae 89, 345-367.
10. Bousquet, R., Engi, M., Gosso, G., Oberhänsli, R., berger, A., Spalla, M.I., Zucali, M. & Goffé, b. 2004: Explanatory notes to the map: Metamorphic structure of the Alps transition from the Western to the central Alps. Mitteilungen der Österreichischen Mineralogischen Gesellschaft 149, 145-156.
11. Boynton, W.V. (1984): Cosmochemistry of the rare earth elements; meteorite studies, in Henderson, P. (Ed.), Rare Earth Element Geochemistry, Elsevier, Amsterdam, 1984, pp. 63-102.
12. Brouwer, F.M., Burri, T., Engi, M., Berger, A. 2005: Eclogite relics in the central Alps: Pt - evolution, Lu-Hf ages and implications for formation of tectonic mélange zones. Schweizerische Mineralogische und Petrographische Mitteilungen 85, 147-174.
13. Bucher, S. 2003: The briançonnais units along the ECORS-CROP transect (Italian-French Alps): Structures, metamorphism and geochronology. Unpublished PhD thesis, University basel, 175 pp.
14. Burton, K.W., Kohn, M.J., Cohen A.S. & O'Nions, R.K. 1995: The relative diffusion of Pb, Nd, Sr and O in garnet. Earth and Planetary science Letters 133, 199-211.
15. Chauvel, C. & Blichert-Toft, J. 2001: A hafnium isotope and trace element perspective on melting of the depleted mantle. Earth and Planetary science Letters 190, 137-151.
16. Cliff, R.A., Barnicoat, A.C., Inger, S. 1998: Early tertiary eclogite facies metamorphism in the Monviso Ophiolite. Journal of Metamorphic Geology 16, 447-455.
17. Cohen, A.S., O'Nions, R.K., Siegenthaler, R. & Griffin, W.I. 1988: Chronology of the pressure-temperature history recorded by a granulite terrain. Contributions to Mineralogy and Petrology 98, 303-311.
18. Dal Piaz, G. V., Cortiana, G., Del Moro, A., Martin, S., Pennacchioni, G. & Tartarotti, P. 2001: Tertiary age and paleostructural inferences of the eclogitic imprint in the Austroalpine outliers and Zermatt-saas ophiolite, western Alps. Internationl Journal of Earth sciences 90, 668-684.
19. De Capitani C. 1994: Gleichgewichts-Phasendiagramme: Theorie und Software. Beihefte zum European Journal of Mineralogy 72. Jahrestagung der Deutschen Mineralogischen Gesellschaft 6, 48.
20. Dodson, M.,H. 1973: Closure temperature in cooling Geochronological and Petrological systems. Contributions to Mineralogy and Petrology 40, 259-274.
21. Duchêne, S., Blichert-Toft, J., Luais, B., Téluk, P., Lardeaux, J.M. & Albarède, F. (1997): The Lu-Hf dating of garnets and the ages of the Alpine high-pressure metamorphism. Nature 387, 586-589.
22. Escher, A., Masson, H. & Steck, A. 1993: Nappe geometry in the western swiss Alps. Journal of structual Geology 15, 501-509.
23. Frisch, W. 1979: Tectonic progradation and plate tectonic evolution of the Alps tectonophysics 60(3-4), 121-139.
24. Froitzheim, N. & Manatschal, G. 1996: Kinematics of Jurassic rifting, mantle exhumation, and passive-margin formation in the Austroalpine and Penninic nappes (eastern switzerland). Geological Society of American Bulletin 108, 1120-1133.
25. Froitzheim, N., Schmid, S.M. & Frey, M. 1996: Mesozoic paleogeography and the timing of eclogitfacies metamorphism in the Alps: A working hypothesis. Eclogae geologicae Helvetiae 89(1), 81-110.
26. Froitzheim, N. 2001: Origin of the Monte rosa nappe in the Pennine Alps: A new working hypothesis. Geological Society of America Bulletin 113, 604-614.
27. Froitzheim, N., Pleuger, J., Roller, S. & Nagel, T. 2003: Exhumation of high- and ultrahigh-pressure metamorphic rocks by slab extraction. Geology, 31, 925-928.
28. Gebauer, D. 1996: A P-T-t path for an (ultra?-) high-pressure ultramafic/ mafic rock-association and its felsic country-rocks based on SHRIMPdating of magmatic and metamorphic zircon domains. Example: Alpe Arami (Cetral Swiss Alps). In: Basu, A., Hart, S. (Eds.), Earth Processes: Reading the Isotopic Code. Geophys. Monogr. AGU. Washington Dc 95, 307-329.
29. Gebauer, D., Schertl, H.P., Brix, M. & Schreyer, W. 1997: 35 Ma old ultrahighpressure metamorphism and evidence for very rapid exhumation in the Dora Maira massif, Western Alps. Lithos 41, 5 -24.
30. Hensen, B.J. & Zhou, B. 1995: A Pan-African granulite facies metamorphic episode in Prydz bay, Antarctica: Evidence from Sm-Nd garnet dating. Australian Journal of Earth science 42(3), 249-258.
31. Hofmann, A.W. 1988: Chemical diffTrentiation of the Earth: the relationship between mantle, continental crust and oceanic crust. Earth and Planetary science Letters 90, 297-314.
32. Inger, R., Ramsbotham, W., Cliff, R.A. & Rex, D.C. 1996: Metamorphic evolution of the Sesia-Lanzo Zone, Western Alps: Time constraints from multisystem geochronology. Contributions to Mineralogy and Petrology 126, 152-168.
33. Jacobsen, S.B., Wasserburg, G.J. 1980: Sm-Nd isotopic evolution of chondrites. Earth and Planetary science Letters 50, 139-155.
34. Jagoutz, E. 1988: Nd and Sr systematics in an eclogite xenolith from Tanzania: Evidence for frozen mineral equilibria in the continental lithosphere. Geochimica et Cosmochimica Acta 52, 1285-1293.
35. Jochum K.P., Stoll B., Herwig K. & Willbold M. 2007: Validation of LA-ICPMS trace element analysis of geological glasses using a new solid-state 193 nm Nd: YAG laser and matrix-matched calibration. Journal of Analytical Atomic spectrometry 22(2), 112-121.
36. John, T., Schere, E.E., Haase, K. & Schenk, V. 2004: Trace element fractionation during fluid-induced eclogitization in a subduction slab: trace element and Lu-Hf-Sm-Nd isotope systematics. Earth and Planetary Science Letters 277, 441-456.
37. Kaczmarek, M.A., Müntener, O. & Rubatto, D. 2008: Trace element chemistry and U-Pb dating of zircons from oceanic gabbros and their relationship with whole rock composition (Lanzo, Italian Alps). Contributions to Mineralogy and Petrology 155, 295-312.
38. Keller, L.M. & Schmid, S.M. 2001: On the kinematics of shearing near the top of the Monte Rosa nappe and the nature of the Furgg zone in Val Loranco (Antrona valley, N. Italy): Tectonometamorphic and paleogeographical consequences. Schweizerische Mineralogische und Petrographische Mitteilungen 81, 347-367.
39. Kohn, M.J. 2003: Geochemical zoning in metamorphic minerals. In: Rudnik, R.L. (Ed.), The Crust. Treatise on Geochemistry 3, 229-261.
40. Kramer J., Abart, R., Müntener, O., Schmid, S.M., Stern, W. 2003: Geochemistry of metabasalts from ophiolitic and adjacent distal continental margin units: Evidence from the Monte Rosa region (swiss and Italian Alps). schweizerische Mineralogische und Petrographische Mitteilungen 83, 217-240.
41. Kretz, R. 1983: Symbols for rock-forming minerals. American Mineralogist 68, 277-279.
42. Lagos, M., Scherer, E.E., Tomaschek, F., Münker, C., Keiter, M., Berndt, J., Ballhaus, C. 2007: High precision Lu-Hf geochronology of Eocene eclogite- facies rocks from Syros, Cyclades, Greece. Chemical Geology 243, 16-35.
43. Lapen, t.J., Johnson, c.M., Baumgartner, L.P., Mahlen, N.J., beard, b.L. & Amato, J.M. 2003: Burial rates during prograde metamorphism of an ultrahigh- pressure terrane: An example from Lago di Cignana, Western Alps, Italy. Earth and Planetary Science Letters 215, 57-72.
44. Lapen, T.J., Johnson, C.M., Baumgartner, L.P., Dal Piaz, G.V., Skora, S. & Beard, B.L. 2007: Coupling of oceanic and continental crust during Eocene eclogite facies metamorphism: Evidence from the Monte Rosa nappe, western Alps. Contributions to Mineralogy and Petrology 153, 139-157.
45. Liati, A., Gebauer, D. & Fanning, M.C. 2003: The youngest basic oceanic magmatism in the Alps (Late Cretaceous; Chiavenna unit, Central Alps): geochronological constraints and geodynamic significance. Contributions to Mineralogy and Petrology 146(2), 144-158.
46. Liati, A., Froitzheim, N. & Fanning, C.M. 2005: Jurassic Ophiolithes within the Valais domain of the western and central Alps: Geochronological evidence for re-rifting of oceanic crust, Contributions to Mineralogy and Petrology 149(4), 446-461.
47. Liati, A. & Froitzheim, N. 2006: Assessing the Valais ocean, Western Alps: UPb SHRIMP zircon geochronology of eclogite in the Balma unit, on top of the Monte Rosa nappe. European Journal of Mineralogy 18(3), 299-308.
48. Ludwig, K.R. 2001: Isoplot/Ex version 2.49, Geochronological Toolkit for Microsoft Excel, Berkeley Geochronology Center Special Publications 1a.
49. Mahlen, N.J., Lapen, T.J., Johnson, C.M., Baumgartner, L.P. & Beard, B.L. 2003: Duration of Prograde Metamorphism as constrained by high-precision Lu-Hf Geochronology of HP/UHP Eclogites from the western Alps. Geological Society of America Abstracts with Programs 35(6), 638.
50. Mahlen, N.J., Skora, S., Johnson, C.M., Baumgartner, L.P., Lapen, T.J., Beard, B.L. & Pilet, S. 2005: Lu-Hf geochronology of eclogites from Pfulwe, Zermatt- Saas Ophiolithe, western Alps, Switzerland. Geochimica et Cosmochimica Acta 69, A305-A305 Suppl. S.
51. Mahlen, N.J., Johnson, C.M., Baumgartner, L.P., Lapen, T.J., Skora, S. & Beard, B.L. 2006: Protracted Subduction History and HP/UHP Metamorphism of the Zermatt-Saas-Ophiolithe, Western Alps, as Constrained by Lu-Hf Geochronology. Eos trans. AGU 87 (52), Fall Meeting Supplement.
52. McDounough, W.F., & Sun, S. S. 1995: The composition of the Earth. Chemical Geology 120, 223-253.
53. Mezger, K., Essene, E.J. & Halliday, A.N. 1992: Closure temperatures of the Sm-Nd system in metamorphic garnets. Earth and Planetary Science Letters 113, 397-409.
54. Münker C., Weyer S., Scherer E. & Mezger K. 2001: Separation of high field strength elements (Nb, Ta, Zr, Hf) and Lu from rock samples for MC- ICPMs measurements. Geochemistry Geophysics Geosystems 2, Nr. 2001Gc000183
55. 238U disequilibrium isotope systematics: Precise accessory mineral chronology and melt evolution tracing in the Alpine bergell intrusion. Geochimica et Cosmochimica Acta, 68 (11), 2543-2560.
56. Patchett, P.J. & Tatsumoto, M. 1980: A routine high precision method for Lu- Hf isotope geochemistry and chronology. Contributions to Mineralogy and Petrology 75, 263-267.
57. Pleuger, J., Froitzheim, N. & Jansen, E. 2005: Folded continental and oceanic nappes on the southern side of Monte Rosa (Western Alps, Italy): anatomy of a double collision suture. Tectonics 24, DOI 10.1029/ 2004tc001737
58. Pleuger, J., Roller, S., Walter, J.M., Jansen, E. & Froitzheim, N. 2007: Structural evolution of the contact between two Penninic nappes (Zermatt-saas zone and Combin zone, Western Alps) and implications for the exhumation mechanism and palaeogeography. International Journal of Earth Science 96, 229-252.
59. Ravna, E.J.K. & Terry, M.P. 2004: Geothermobarometry of UHP and HP eclogites and schists - an evaluation of equilibria among garnet-clinopyroxene- kyanite-phengite-coesite/quartz. Journal of Metamorphic Geology 22(6), 579-592.
60. Reinecke, T. 1991: Very-high-pressure metamorphism and uplift of coesitebearing metasediments from the Zermatt-saas zone, Western Alps. European Journal of Mineralogy 3, 7-17.
61. Reinecke, t. 1998: Prograde high- to ultrahigh-pressure metamorphism and exhumation of oceanic sediments at Lago di Cignana, Zermatt-Saas Zone, western Alps. Lithos 42, 147-189.
62. 144Nd a natural tracer: An application to oceanic basalts. Earth and Planetary Science Letters 31, 269-278.
63. Rubatto, D., Gebauer, D. & Fanning, M. 1998: Jurassic formation and Eocene subduction of the Zermatt-Saas Fee Ophiolithes: Implications for the geodynamic evolution of the central and western Alps. Contributions to Mineralogy and Petrology 132, 269-287.
64. Rubatto, D. & Gebauer, D. 1999: Eocene/Oligocene (35 Ma) high-pressure metamorphism in the Gornergrat Zone (Monte Rosa, Western Alps): Implications for paleogeography. Schweizerische Mineralogische und Petrographische Mitteilungen 79, 353-362.
65. 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 and Planetary Science Letters 167, 141-158.
66. Rubatto, D. & Hermann, J. 2001: Exhumation as fast as subduction? Geology 29, 3-6.
67. Rubatto, D. & Hermann, J. 2003: Zircon formation during fluid circulation in eclogites (Monviso, Western Alps): Implications for Zr and Hf budget in subduction zones. Geochimica et Cosmochimica Acta 67, 2173-2187.
68. Salters, V.J.M. & White, W.M. 1998: Hf isotope constraints on mantle evolution, Chemical Geology 145, 447-460.
69. Scherer, E., Cameron, K.L. & Blichert-Toft, J. 2000: Lu-Hf garnet geochronology: Closure temperature relative to the Sm-Nd system and the effects of trace mineral inclusions. Geochimica et Cosmochimica Acta 64 (19), 3413-3432.
70. Scherer, E., Münker, C. & Mezger, K. 2001: Calibration of the Lutetium-Hafnium Clock, Science 293, 683-687.
71. Schmid, S.M., Pfiffner, O.A., Froitzheim, N., Schönborn, G. & Kissling, E. 1996: Geophysical-geological transect and tectonic evolution of the Swiss-Italian Alps. Tectonics 15, 1036-1064.
72. Schmid, S.M., Fügenschuh, B., Kissling, E. & Schuster, R. 2004: Tectonic map and overall architecture of the Alpine orogen. Eclogae gologicae Helvetiae 97(1), 93-117.
73. Skora, S., Baumgartner, L.P., Mahlen, N.J., Johnson, C.M., Pilet, S. & Hellebrand, E. 2006: Diffusion-limited REE uptake by eclogite garnets and its consequences for Lu-Hf and Sm-Nd geochronology. Contributions to Mineralogy and Petrology 152, 703-720.
74. Skora, S., Baumgartner, L.P., Mahlen, N.J., Lapen, T.J., & Johnson, C.M. 2006b: Lu/Hf closure temperature estimated from alpine eclogite garnets. 4th Swiss Geoscience Meeting, Bern 2006.
75. 176Lu decay constant determined by Lu-Hf and U-Pb isotope systematics of Precambrian mafic intrusions. Earth and Planetary Science Letters 219, 311-324.
76. Spear, F.S. 1991: On the interpretation of peak metamorphic temperatures in light of garnet diffusion during cooling. Journal of Metamorphic Geology 9(4), 379-388.
77. Stampfli, G.M. 1993: Le Briançonnais, terrain exotique dans les Alpes? Eclogae geologicae Helvetiae 86, 1-45.
78. Stampfli, G.M., Mosar, J., Marquer, D., Marchant, R., Baudin, T. & Borel, G. 1998: Subduction and obduction processes in the swiss Alps. Tectonophysics 296, 159-204.
79. Stampfli, G.M. & Borel, G.D. 2004: The TRANSMED transects in space and time: Constraints on the paleotectonic evolution of the Mediterranean domain. In: Cavazza, W., Roure, F.M., Spakman, W., Stampfli, G.M. & Ziegler, P.A. (Eds.) The TRANSMED Atlas. Springer, Berlin Heidelberg, 53-80.
80. Steck, A., Bigioggero, B., Dal Piaz, G.V., Escher, A., Martinotti, G. & Masson, H. 1999: Carte tectonique des Alpes de Suisse occidentale et des régions avoisinantes, 1: 100'000, carte spéc. n. 123 (4 maps). Serv. hydrol. géol. nat., Bern
81. Thoeni, M. (2002): Sm-Nd isotope systematics in garnet from different lithologies (Eastern Alps); age results, and an evaluation of potential problems for garnet Sm-Nd. Chemical Geology 185 (3-4), 255-281.
82. Tirone, M., Ganguly, J., Dohmen, R., Langenhorst, F., Hervig, R. & Becker, H.W. 2004: Rare earth diffusion kinetics in garnet: Experimental studies and applications. Geochimica et Cosmochimica Acta 69(9), 2385-2398.
83. Van Orman, J.A., Grove, T.L., Shimizu, N. & Graham, D.L. 2002a: Rare earth element diffusion in a natural pyrope single crystal at 2.8 GPa. Contributions to Mineralogy and Petrology 142, 416-424.
84. Vervoort, J.D., Patchett, P.J., Söderlund, U., Baker, M. 2004: The isotopic composition of Yb and the determination of Lu concentrations and Lu/Hf ratios by isotope dilution using McIcPMs. Geochemistry Geophysics Geosystems 5 (11), doi:10.1029/2004Gc000721.