Abstract
This study monitors regional changes in the crystallinity of carbonaceous matter (CM) by applying Micro-Raman spectroscopy to a total of 214 metasediment samples (largely so-called Bündnerschiefer) dominantly metamorphosed under blueschist- to amphibolite-facies conditions. They were collected within the northeastern margin of the Lepontine dome and easterly adjacent areas of the Swiss Central Alps. Three-dimensional mapping of isotemperature contours in map and profile views shows that the isotemperature contours associated with the Miocene Barrow-type Lepontine metamorphic event cut across refolded nappe contacts, both along and across strike within the northeastern margin of the Lepontine dome and adjacent areas. Further to the northeast, the isotemperature contours reflect temperatures reached during the Late Eocene subduction-related blueschist-facies event and/or during subsequent near-isothermal decompression; these contours appear folded by younger, large-scale post-nappe-stacking folds. A substantial jump in the recorded maximum temperatures across the tectonic contact between the frontal Adula nappe complex and surrounding metasediments indicates that this contact accommodated differential tectonic movement of the Adula nappe with respect to the enveloping Bündnerschiefer after maximum temperatures were reached within the northern Adula nappe, i.e. after Late Eocene time.
Similar content being viewed by others
References
Agard P, Jolivet L, Goffé B (2001) Tectonometamorphic evolution of the Schistes Lustrés complex: implications for the exhumation of HP and UHP rocks in the Western Alps. Bull Soc Geol Fr 172:617–636
Allaz J (2008) Metamorphic evolution in the northern Central Alps: linking 39Ar-40Ar dating with thermobarometry. Unpublished PhD thesis, Universität Bern
Angiboust S, Agard P, Jolivet L, Beyssac O (2009) The Zermatt-Saas ophiolite: the largest (60-km wide) and deepest (c. 70–80 km) continuous slice of oceanic lithosphere detached from a subduction zone? Terra Nova 21:171–180
Aoya M, Kouketsu Y, Endo S, Shimizu, H, Mizukami T, Nakamura D, Wallis S (2010) Extending the applicability of the Raman carbonaceous-material geothermometer using data from contact metamorphic rocks. J Metamorph Geol. doi:10.1111/j.1525-1314.2010.00896.x
Baumer A, Frey JD, Jung W, Uhr A (1961) Die Sedimentbedeckung des Gotthard-Massivs zwischen oberen Bleniotal und Lugnez (Vorläufige Mitteilung). Eclogae Geol Helv 54:478–491
Becker H (1993) Garnet peridotite and eclogite Sm-Nd mineral ages from the Lepontine dome (Swiss Alps)—new evidence for Eocene high-pressure metamorphism in the Central Alps. Geology 21:599–602
Berger A, Bousquet R (2008) Subduction-related metamorphism in the Alps: Review of isotopic ages based on petrology and their geodynamic consequences. In: Siegesmund S et al. (eds) Tectonic aspects of the Alpine-Dinaride-Carpathian system. Geological Society of Special Publications, vol 298, pp 117–144
Berger A, Mercolli I, Engi M (2005) The central Lepontine Alps: notes accompanying the tectonic and petrographic map sheet Sopra Ceneri (1:100’000). Schweiz Mineral Petrogr Mitt 85:109–146
Berger A, Rosenberg C, Schaltegger U (2009) Stability and isotopic dating of monazite and allanite in partially molten rocks: example from the Central Alps. Swiss J Geosci 102:15–29
Beyssac O, Goffé B, Chopin C, Rouzaud JN (2002a) Raman spectra of carbonaceous material in metasediments: a new geothermometer. J Metamorph Geol 20:859–871
Beyssac O, Rouzaud JN, Goffé B, Brunet F, Chopin C (2002b) Graphitization in a high-pressure, low-temperature metamorphic gradient: a Raman microspectroscopy and HRTEM study. Contrib Mineral Petrol 143:19–31
Beyssac O, Brunet F, Petitet JP, Goffé B, Rouzaud JN (2003a) Experimental study of the microtextural and structural transformations of carbonaceous materials under pressure and temperature. Eur J Mineral 15:937–951
Beyssac O, Goffé B, Petitet JP, Froigneux E, Moreau M, Rouzaud JN (2003b) On the characterization of disordered and heterogeneous carbonaceous materials by Raman spectroscopy. Spectrochim Acta Part A Mol Biomol Spectrosc 59:2267–2276
Beyssac O, Bollinger L, Avouac JP, Goffé B (2004) Thermal metamorphism in the lesser Himalaya of Nepal determined from Raman spectroscopy of carbonaceous material. Earth Planet Sci Lett 225:233–241
Beyssac O, Simoes M, Avouac JP, Farley KA, Chen YG, Chan YC, Goffé B (2007) Late Cenozoic metamorphic evolution and exhumation of Taiwan. Tectonics 26:TC6001. doi:10.1029/2006tc002064
Bollinger L, Avouac JP, Beyssac O, Catlos EJ, Harrison TM, Grove M, Goffé B, Sapkota S (2004) Thermal structure and exhumation history of the Lesser Himalaya in central Nepal. Tectonics 23:TC5015. doi:10.1029/2003tc001564
Bonijoly M, Oberlin M, Oberlin A (1982) A possible mechanism for natural graphite formation. Int J Coal Geol 1:238–312
Bousquet R (2008) Metamorphic heterogeneities within a single HP unit: overprint effect or metamorphic mix? Lithos 103:46–69
Bousquet R, Goffé B, Henry P, Le Pichon X, Chopin C (1997) Kinematic, thermal and petrological model of the central alps: Lepontine metamorphism in the upper crust and eclogitisation of the lower crust. Tectonophysics 273:105–127
Bousquet R, Oberhänsli R, Goffé B, Jolivet L, Vidal O (1998) High-pressure-low-temperature metamorphism and deformation in the Bündnerschiefer of the Engadine window: implications for the regional evolution of the eastern Central Alps. J Metamorph Geol 16:657–674
Bousquet R, Goffé B, Vidal O, Oberhänsli R, Patriat M (2002) The tectono-metamorphic history of the Valaisan domain from the Western to the Central Alps: new constraints on the evolution of the Alps. Geol Soc Am Bull 114:207–225
Bousquet R, Oberhänsli R, Goffé B, Wiederkehr M, Koller F, Schmid SM, Schuster R, Engi M, Berger A, Martinotti G (2008) Metamorphism of metasediments in the scale of an orogen: A key to the Tertiary geodynamic evolution of the Alps. In: Siegesmund S et al. (eds) Tectonic aspects of the Alpine-Dinaride-Carpathian system. Geological Society of Special Publications, vol 298, pp 393–411
Brouwer FM, 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. Schweiz Mineral Petrogr Mitt 85:147–174
Bucher S, Bousquet R (2007) Metamorphic evolution of the Briançonnais units along the ECORS-CROP profile (Western Alps): new data on metasedimentary rocks. Swiss J Geosci 100:227–242
Buseck PR, Huang B-J (1985) Conversion of carbonaceous material to graphite during metamorphism. Geochim Cosmochim Acta 49:2003–2016
Bustin RM, Ross JV, Moffat I (1986) Vitrinite anisotropy under differential stress and high confining pressure and temperature: preliminary observations. Int J Coal Geol 6:343–351
Bustin RM, Ross JV, Rouzaud JN (1995) Mechanisms of graphite formation from kerogen: experimental evidence. Int J Coal Geol 28:1–36
Cançado LG, Takai K, Enoki T, Endo M, Kim YA, Mizusaki H, Jorio A, Coelho LN, Magalhaes-Paniago R, Pimenta MA (2006) General equation for the determination of the crystallite size La of nanographite by Raman spectroscopy. Appl Phys Lett 88:163106
Cançado LG, Jorio A, Pimenta MA (2007) Measuring the absolute Raman cross section of nanographites as a function of laser energy and crystallite size. Phys Rev B 76:064304
Chadwick B (1968) Deformation and Metamorphism in the Lukmanier Region, Central Switzerland. Geol Soc Am Bull 79:1123–1150
Dale J, Holland TJB (2003) Geothermobarometry, P-T paths and metamorphic field gradients of high-pressure rocks from the Adula Nappe, Central Alps. J Metamorph Geol 21:813–830
Derungs G (2008) Structural and metamorphic evolution of metasediments at the contact between Valaisan Oceanic domain and adjacent distal European margin. Unpublished Master thesis, Universität Basel
Diessel CFK, Brothers RN, Black PM (1978) Coalification and graphitization in high-pressure schists in New Caledonia. Contrib Mineral Petrol 68:63–78
Engi M, Todd CS, Schmatz DR (1995) Tertiary metamorphic conditions in the eastern Lepontine Alps. Schweiz Mineral Petrogr Mitt 75:347–369
Engi M, Berger A, Roselle GT (2001) Role of the tectonic accretion channel in collisional orogeny. Geology 29:1143–1146
Engi M, Bousquet R, Berger A (2004) Explanatory notes to the map: metamorphic structure of the Central Alps. Mitt Österr Geol Ges 149:157–173
Etter U (1987) Stratigraphische und strukturgeologische Untersuchungen im gotthardmassivischen Mesozoikum zwischen dem Lukmanierpass und der Gegend von Ilanz. Unpublished PhD thesis, Universität Bern
Ferreiro Mählmann R, Petrova TV, Pironon J, Stern WB, Ghanbaja J, Dubessy J, Frey M (2002) Transmission electron microscopy study of carbonaceous material in a metamorphic profile from diagenesis to amphibolite facies (Bündnerschiefer, Eastern Switzerland). Schweiz Mineral Petrogr Mitt 82:253–272
Fox JS (1975) Three-dimensional isograds from the Lukmanier-Pass, Switzerland, and their tectonic significance. Geol Mag 112:547–564
French BM (1964) Graphitization of organic material in a progressively metamorphosed Precambrian iron formation. Science 146:917–918
Frey M (1969) Die Metamorphose des Keupers vom Tafeljura bis zum Lukmanier-Gebiet. Beitr Geol Kt Schweiz NF 137:1–160
Frey M (1974) Alpine metamorphism of pelitic and marly rocks of the Central Alps. Schweiz Mineral Petrogr Mitt 54:489–506
Frey M (1978) Progressive low-grade metamorphism of a black shale formation, Central Swiss Alps, with special reference to Pyrophyllite and Margarite bearing assemblages. J Petrol 19:95–135
Frey M, Ferreiro Mählmann R (1999) Alpine metamorphism of the central Alps. Schweiz Mineral Petrogr Mitt 79:135–154
Frey M, Bucher K, Frank E, Mullis J (1980) Alpine metamorphism along the geotraverse Basel-Chiasso—a review. Eclogae Geol Helv 73:527–546
Frey M, Bucher K, Frank E, Schwander H (1982) Margarite in the Central Alps. Schweiz Mineral Petrogr Mitt 62:21–45
Frey M, Desmons J, Neubauer F (1999) Metamorphic map of the Alps. 1:500’000. Schweiz Mineral Petrogr Mitt 79
Frisch W (1979) Tectonic progradation and plate tectonic evolution of the Alps. Tectonophysics 60:121–139
Froitzheim N, Schmid SM, Conti P (1994) Repeated change from crustal shortening to orogen-parallel extension in the Austroalpine units of Graubünden. Eclogae Geol Helv 87:559–612
Froitzheim N, Schmid SM, Frey M (1996) Mesozoic paleogeography and the timing of eclogite-facies metamorphism in the Alps: a working hypothesis. Eclogae Geol Helv 89:81–110
Gabalda S, Beyssac O, Jolivet L, Agard P, Chopin C (2009) Thermal structure of a fossil subduction wedge in the Western Alps. Terra Nova 21:28–34
Galy V, Beyssac O, France-Lanord C, Eglinton T (2008) Recycling of graphite during Himalayan erosion: a geological stabilization of carbon in the crust. Science 322:943–945
Gansser A (1937) Der Nordrand der Tambodecke. Schweiz Mineral Petrogr Mitt 17:291–523
Gebauer D (1996) A P-T-t path for a high-pressure ultramafic rock-association and their felsic country-rocks based on SHRIMP-dating of magmatic and metamorphic zircon domains. Example: Alpe Arami (Central Swiss Alps). In: Hart A, Basu SR (eds) Reading the isotope code. American Geophysical Union, Washington D.C., pp 307–328
Gebauer D, Grünenfelder M, Tilton G, Trommsdorff V, Schmid SM (1992) The geodynamic evolution of garnet-peridotites, garnet-pyroxenites and eclogites of Alp Arami and Cima di Gagnone (Central Alps) from Early Proterozoic to Oligocene. Schweiz Mineral Petrogr Mitt 72:107–111
Goffé B, Bousquet R (1997) Ferrocarpholite, chloritoïde et lawsonite dans les métapelites des unités du Versoyen et du Petit St. Bernard (zone valaisanne, Alpes occidentales). Schweiz Mineral Petrogr Mitt 77:137–147
Goffé B, Chopin C (1986) High-pressure metamorphism in the Western Alps: zoneography of metapelites, chronology and consequences. Schweiz Mineral Petrogr Mitt 66:41–52
Goffé B, Oberhänsli R (1992) Ferro- and magnesiocarpholite in the “Bündnerschiefer” of the eastern Central Alps (Grisons and Engadine Window). Eur J Mineral 4:835–838
Goffé B, Bousquet R, Henry P, Le Pichon X (2003) Effect of the chemical composition of the crust on the metamorphic evolution of orogenic wedges. J Metamorph Geol 21:123–141
Grew ES (1974) Carbonaceous material in some metamorphic rocks of New England and other areas. J Geol 82:50–73
Guedes A, Noronha F, Prieto AC (2005) Characterisation of dispersed organic matter from lower Palaeozoic metasedimentary rocks by organic petrography, X-ray diffraction and micro-Raman spectroscopy analyses. Int J Coal Geol 62:237–249
Handy MR, Oberhänsli R (2004) Age map of the metamorphic structure of the Alps—tectonic interpretation and outstanding problems. Mitt Österr Geol Ges 149:201–226
Handy MR, Schmid SM, Bousquet R, Kissling E, Bernoulli D (2010) Reconciling plate-tectonic reconstructions of Alpine Tethys with the geological-geophysical record of spreading and subduction in the Alps. Earth Sci Rev 102:121–158
Heinrich CA (1982) Kyanite-eclogite to amphibolite facies evolution of hydrous mafic and pelitic rocks, Adula-nappe, Central Alps. Contrib Mineral Petrol 81:30–38
Heinrich CA (1986) Eclogite facies regional metamorphism of hydrous mafic rock in the Central Alpine Adula Nappe. J Petrol 27:123–154
Hoefs J, Frey M (1976) The isotopic composition of carbonaceous matter in a metamorphic profile from the Swiss Alps. Geochim Cosmochim Acta 40:945–951
Hunziker JC, Desmons J, Hurford AJ (1992) Thirty-two years of geochronological work in the Central and Western Alps: a review on seven maps. Mem Geol Univ Lausanne
Itaya T (1981) Carbonaceous material in pelitic schists of the Sanbagawa metamorphic belt in central Shikoku, Japan. Lithos 14:215–224
Janots E, Engi M, Berger A, Allaz J, Schwarz JO, Spandler C (2008) 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
Janots E, Engi M, Rubatto D, Berger A, Gregory C, Rahn MK (2009) Metamorphic rates in collisional orogeny from in situ allanite and monazite dating. Geology 37:11–14
Jenny H, Frischknecht G, Kopp J (1923) Geologie der Adula. Beitr Geol Kt Schweiz NF 51:1–123
Judik K, Rantitsch G, Rainer TM, Arkai P, Tomljenovic B (2008) Alpine metamorphism of organic matter in metasedimentary rocks from Mt. Medvednica (Croatia). Swiss J Geosci 101:605–616
Köppel V, Günthert A, Grünenfelder M (1981) Patterns of U-Pb zircon and monazite ages in polymetamorphic units of the Swiss Alps. Schweiz Mineral Petrogr Mitt 61:97–119
Kribek B, Hrabal J, Landais P, Hladikova J (1994) The association of poorly ordered graphite, coke and bitumens in greenschist facies rocks of the Ponikla Group, Lugicum, Czech Republic: the result of graphitization of various types of carbonaceous matter. J Metamorph Geol 12:493–503
Kribek B, Sykorova I, Machovic V, Laufek F (2008) Graphitization of organic matter and fluid-deposited graphite in Palaeoproterozoic (Birmian) black shales of the Kaya-Goren greenstone belt (Burkina Faso, West Africa). J Metamorph Geol 26:937–958
Kupferschmid C (1977) Geologie auf der Lugnezer Seite der Piz Aul-Gruppe. Eclogae Geol Helv 70:1–58
Lahfid A, Beyssac O, Deville E, Negro F, Chopin C, Goffe B (2010) Evolution of the Raman spectrum of carbonaceous material in low-grade metasediments of the Glarus Alps (Switzerland). Terra Nova 22:354–360
Landis CA (1971) Graphitization of dispersed carbonaceous material in metamorphic rocks. Contrib Mineral Petrol 30:34–45
Large DJ, Christy AG, Fallick AE (1994) Poorly crystalline carbonaceous matter in high grade metasediments: implications for graphitisation and metamorphic fluid composition. Contrib Mineral Petrol 116:108–116
Lee YJ (2004) The second order Raman spectroscopy in carbon crystallinity. J Nucl Mater 325:174–179
Liati A, Gebauer D, Fanning CM (2009) Geochronological evolution of HP metamorphic rocks of the Adula nappe, Central Alps, in pre-Alpine and Alpine subduction cycles. J Geol Soc 166:797–810. doi:10.1144/0016-76492008-033
Livi KJT, Ferry JM, Veblen DR, Frey M, Connolly JAD (2002) Reactions and physical conditions during metamorphism of Liassic aluminous black shales and marls in central Switzerland. Eur J Mineral 14:647–672
Loprieno A, Bousquet R, Bucher S, Ceriani S, Dalla Torre FH, Fügenschuh B, Schmid SM (2010) The Valais units in Savoy (France): a key area for understanding the paleogeography and the tectonic evolution of the Western Alps. Int J Earth Sci (this volume). doi:10.1007/s00531-010-0595-1
Löw S (1987) Die tektono-metamorphe Entwicklung der nördlichen Adula-Decke. Beitr Geol Kt Schweiz NF 161:1–84
Matthews MJ, Pimenta MA, Dresselhaus G, Dresselhaus MS, Endo M (1999) Origin of dispersive effects of the Raman D band in carbon materials. Phys Rev B 59:6585–6588
Milnes AG (1974) Structure of Pennine zone (Central Alps)—new working hypothesis. Geol Soc Am Bull 85:1727–1732
Nabholz WK (1945) Geologie der Bündnerschiefergebirge zwischen Rheinwald, Valser- und Safiental. Eclogae Geol Helv 38:1–119
Nagel T (2008) Tertiary subduction, collision, and exhumation recorded in the Adula nappe, central Alps. In: Siegesmund S et al. (eds) Tectonic Aspects of the Alpine-Dinaride-Carpathian system. Geological Society of Special Publications, vol 298, pp 365–392
Nagel T, de Capitani C, Frey M (2002) Isograds and P-T evolution in the eastern Lepontine Alps (Graubünden, Switzerland). J Metamorph Geol 20:309–324
Nänny P (1948) Zur Geologie der Prättigauschiefer zwischen Rhätikon und Plessur. PhD thesis, Universität Zürich
Nasdala L, Smith DC, Kaindl R, Ziemann MA (2004) Raman spectroscopy: analytical perspectives in mineralogical research. In: Beran A, Libowitzky E (eds) Spectroscopic methods in mineralogy. EMU Notes in Mineralogy 6. European Mineralogical Union, Eötvös University Press, Budapest, pp 281–343
Negro F, Beyssac O, Goffé B, Saddiqi O, Bouybaouène ML (2006) Thermal structure of the Alboran Domain in the Rif (northern Morocco) and the Western Betics (southern Spain). Constraints from Raman spectroscopy of carbonaceous material. J Metamorph Geol 24:309–327
Nemanich RJ, Solin SA (1979) First- and second-order Raman scattering from finite-size crystals of graphite. Phys Rev B 20:392–401
Niggli E (1970) Alpine Metamorphose und alpine Gebirgsbildung. Fortschr Mineral 47:16–26
Niggli E, Niggli C (1965) Karten der Verbreitung einiger Mineralien der alpidischen Metamorphose in den Schweizer Alpen (Stilpnomelan, Alkali-Amphibol, Chloritoid, Staurolith, Disthen, Sillimanit). Eclogae Geol Helv 58:335–368
Nover G, Stoll JB, von der Gönna J (2005) Promotion of graphite formation by tectonic stress—a laboratory experiment. Geophys J Int 160:1059–1067
Oberhänsli R (1977) Natriumamphibol-führende metamorphe basische Gesteine aus den Bündnerschiefern Graubündens. Unpublished PhD thesis, ETH Zürich
Oberhänsli R (1978) Chemische Untersuchungen an Glaukophan-führenden basischen Gesteinen aus den Bündnerschiefern Graubündens. Schweiz Mineral Petrogr Mitt 58:139–156
Oberhänsli R (1994) Subducted and obducted ophiolites of the Central Alps: paleotectonic implications deduced by their distribution and metamorphic overprint. Lithos 33:109–118
Oberhänsli R, Goffé B, Bousquet R (1995) Record of a HP-LT metamorphic evolution in the Valais zone: Geodynamic implications. In: Lombardo B (ed) Studies on metamorphic rocks and minerals of the western Alps. A volume in memory of Ugo Pognante. Boll Mus Reg Sci Nat, Torino, vol 13, pp 221–239
Oberhänsli R, Bousquet R, Goffé B (2003) Comment to “Chloritoid composition and formation in the eastern Central Alps: a comparison between Penninic and Helvetic occurrences” by M. Rahn, M. Steinmann & M. Frey. Schweiz Mineral Petrogr Mitt 83:341–344
Oberhänsli R, Bousquet R, Engi M, Goffé B, Gosso G, Handy M, Höck V, Koller F, Lardeaux J-M, Polino R, Rossi P, Schuster R, Schwartz S, Spalla MI (2004) Metamorphic structure of the Alps, 1:1’000’000. In: Oberhänsli R (ed) Explanatory note to the map “Metamorphic structure of the Alps”, Commission for the Geological Map of the World, Paris. Mitt Österr Geol Ges 149
Okuyama-Kusunose Y, Itaya T (1987) Metamorphism of carbonaceous material in the Tono conatct aureole, Kitakami Mountains, Japan. J Metamorph Geol 5:121–139
Pasteris JD (1989) In situ analysis in geological thin-sections by Laser Raman microprobe microspectroscopy: a cautionary note. Appl Spectrosc 43:567–570
Pasteris JD, Wopenka B (1991) Raman-spectra of graphite as indicators of degree of metamorphism. Can Mineral 29:1–9
Petrova TV, Ferreiro Mählmann R, Stern WB, Frey M (2002) Application of combustion and DTA-TGA analysis to the study of metamorphic organic matter. Schweiz Mineral Petrogr Mitt 82:33–53
Pimenta MA, Dresselhaus G, Dresselhaus MS, Cançado LG, Jorio A, Saito R (2007) Studying disorder in graphite-based systems by Raman spectroscopy. Phys Chem Chem Phys 9:1276–1291
Pocsik I, Hundhausen M, Koos M, Ley L (1998) Origin of the D peak in the Raman spectrum of microcrystalline graphite. J Non Crystal Solids 227:1083–1086
Probst P (1980) Die Bündnerschiefer des nördlichen Penninikums zwischen Valser Tal und Passo di San Giacomo. Beitr Geol Kt Schweiz NF 153:1–64
Quinn AW, Glass HD (1958) Rank of coal and metamorphic grade of rocks of Narragansett basin of Rhode Island. Econ Geol 53:563–576
Rahl JM, Anderson KM, Brandon MT, Fassoulas C (2005) Raman spectroscopic carbonaceous material thermometry of low-grade metamorphic rocks: Calibration and application to tectonic exhumation in Crete, Greece. Earth Planet Sci Lett 240:339–354
Rahn MK, Steinmann M, Frey M (2002) Chloritoid composition and formation in the eastern Central Alps: a comparison between Penninic and Helvetic occurrences. Schweiz Mineral Petrogr Mitt 82:409–426
Rantitsch G, Judik K (2009) Alpine metamorphism in the central segment of the Western Greywacke Zone (Eastern Alps). Geol Carp 60:319–329
Rantitsch G, Grogger W, Teichert C, Ebner F, Hofer C, Maurer EM, Schaffer B, Toth M (2004) Conversion of carbonaceous material to graphite within the Greywacke Zone of the Eastern Alps. Int J Earth Sci (Geol Rundsch) 93:959–973
Rantitsch G, Sachsenhofer RF, Hasenhüttl C, Russegger B, Rainer T (2005) Thermal evolution of an extensional detachment as constrained by organic metamorphic data and thermal modeling: Graz Paleozoic Nappe Complex (Eastern Alps). Tectonophysics 411:57–72
Ring U (1992) The Alpine geodynamic evolution of Penninic nappes in the eastern Central Alps: geothermobarometric and kinematic data. J Metamorph Geol 10:33–53
Rubatto D, Hermann J, Berger A, Engi M (2009) Protracted fluid-induced melting during Barrovian metamorphism in the Central Alps. Contrib Mineral Petrol 158:703–722
Santini L (1992) Geochemistry and geochronology of the basic rocks of the Penninic nappes of East-Central Alps (Switzerland). Unpublished PhD thesis, Université de Lausanne
Schmid SM, Pfiffner OA, Froitzheim N, Schönborn G, Kissling E (1996) Geophysical-geological transect and tectonic evolution of the Swiss-Italian Alps. Tectonics 15:1036–1064
Schmid SM, Fügenschuh B, Kissling E, Schuster R (2004) Tectonic map and overall architecture of the Alpine orogen. Eclogae Geol Helv 97:93–117
Schmid SM, Bernoulli D, Fügenschuh B, Matenco L, Schefer S, Schuster R, Tischler M, Ustaszewski K (2008) The Alpine-Carpathian-Dinaridic orogenic system: correlation and evolution of tectonic units. Swiss J Geosci 101:139–183
Steinmann MC (1994) Die nordpenninischen Bündnerschiefer der Zentralalpen Graubündens: Tektonik, Stratigraphie und Beckenentwicklung. Unpublished PhD thesis, ETH Zürich
Steinmann M, Stille P (1999) Geochemical evidence for the nature of the crust beneath the eastern North Penninic basin of the Mesozoic Tethys ocean. Geol Rundsch 87:633–643
Streckeisen A, Wenk E (1974) On steep isogradic surfaces in the Simplon area. Contrib Mineral Petrol 47:81–95
Strohbach HE (1965) Der mittlere Abschnitt der Tambodecke samt seiner mesozoischen Unterlage und Bedeutung. Mitt Geol Inst Eidgenöss Tech Hochsch Univ Zürich 38:1–171
Suchy V, Frey M, Wolf M (1997) Vitrinite reflectance and shear-induced graphitization in orogenic belts: a case study from the Kandersteg area, Helvetic Alps, Switzerland. Int J Coal Geol 34:1–20
Tan PH, Dimovski S, Gogotsi Y (2004) Raman scattering of non-planar graphite: arched edges, polyhedral crystals, whiskers and cones. Philos Trans R Soc Lond A 362:2289–2310
Teichmüller M (1987) Organic material and very low-grade metamorphism. In: Frey M (ed) Low-temperature metamorphism. Blacky, Glasgow, pp 114–161
Teutsch R (1982) Alpine Metamorphose der Misoxer-Zone (Bündnerschiefer, Metabasite und granitische Gneise). Unpublished PhD thesis, Universität Bern
Thakur VC (1971) The structural and metamorphic history of the Mesozoic and pre-Mesozoic basement rocks of the Molare region, Ticino, Switzerland. Unpublished PhD thesis, Imperial college of London
Thakur VC (1973) Events in the Alpine deformation and metamorphism in the northern Pennine zone and southern Gotthard massif regions, Switzerland. Geol Rundsch 62:549–563
Thoenen A (1989) A comparative study of garnet-biotite geothermometers. Unpublished PhD thesis, Universität Basel
Thompson PH (1976) Isograd patterns and pressure-temperature distributions during regional metamorphism. Contrib Mineral Petrol 57:277–295
Thüring M (1990) Geologie um den Hennensädel im hinteren Valsertal (GR). Unpublished Diploma thesis, Universität Basel
Todd CS, Engi M (1997) Metamorphic field gradients in the Central Alps. J Metamorph Geol 15:513–530
Tricart P (1984) From passive margin to continental collision: a tectonic scenario for the Western Alps. Am J Sci 284:97–120
Trommsdorff V (1966) Progressive Metamorphose kieseliger Karbonatgesteine in den Zentralalpen zwischen Bernina und Simplon. Schweiz Mineral Petrogr Mitt 46:431–460
Trümpy R (1960) Paleotectonic evolution of the Central and Western Alps. Geol Soc Am Bull 71:843–908
Tuinstra F, Koenig JL (1970) Raman spectrum of graphite. J Chem Phys 53:1126–1130
Van der Plaas L, Hügi T, Mladeck MH, Niggli E (1958) Chloritoid vom Hennensädel südlich Vals (nördliche Aduladecke). Schweiz Mineral Petrogr Mitt 38:237–246
Voll G (1976) Structural Studies of the Valser Rhine Valley and the Lukmanier Region and their Importance for the nappe Structure of the Central Swiss Alps. Schweiz Mineral Petrogr Mitt 56:619–626
Wada H, Tomita T, Matsuura K, Iuchi K, Ito M, Morikiyo T (1994) Graphitization of carbonaceous matter during metamorphism with references to carbonate and pelitic rocks of contact and regional metamorphisms, Japan. Contrib Mineral Petrol 118:217–228
Wang A, Dhamelincourt P, Dubessy J, Guerard D, Landais P, Lelaurain M (1989) Characterization of graphite alteration in an uranium deposit by micro-Raman spectroscopy, X-RAY diffraction, Transmission Electron Microscopy and Scanning Electron Microscopy. Carbon 27:209–218
Weh M (1998) Tektonische Entwicklung der penninischen Sediment-Decken in Graubünden (Prättigau bis Oberhalbstein). Unpublished PhD thesis, Universität Basel
Weh M, Froitzheim N (2001) Penninic cover nappes in the Prattigau half-window (Eastern Switzerland): Structure and tectonic evolution. Eclogae Geol Helv 94:237–252
Wenk E (1962) Plagioklas als Indexmineral in den Zentralalpen. Schweiz Mineral Petrogr Mitt 42:139–152
Wenk E (1970) Zur Regionalmetamorphose und Ultrametamorphose im Lepontin. Fortschr Mineral 47:34–51
Wiederkehr M (2009) From subduction to collision: a combined metamorphic, structural and geochronological study of polymetamorphic metasediments at the NE edge of the Lepontine dome (Swss Central Alps). Unpublished PhD thesis, Universität Basel
Wiederkehr M, Bousquet R, Schmid SM, Berger A (2008) From subduction to collision: Thermal overprint of HP/LT meta-sediments in the northeastern Lepontine Dome (Swiss Alps) and consequences regarding the tectono-metamorphic evolution of the Alpine orogenic wedge. In: Froitzheim N, Schmid SM (eds) Orogenic processes in the Alpine collision zone. Swiss J Geosci 101(Suppl):S127–S155
Wiederkehr M, Sudo M, Bousquet R, Berger A, Schmid SM (2009) Alpine orogenic evolution from subduction to collisional thermal overprint: the 40Ar/39Ar age constraints from the Valaisan Ocean, Central Alps. Tectonics 28:TC6009. doi:10.1029/2009TC002496
Wopenka B, Pasteris JD (1993) Structural characterization of kerogens to granulite-facies graphite—applicability of Raman microprobe spectroscopy. Am Mineral 78:533–557
Wyss R, Isler A (2007) Blatt 1234 Vals—Geol Atlas Schweiz 1:25’000. Erläut 121:1–78
Yui TF, Huang E, Xu J (1996) Raman spectrum of carbonaceous material: a possible metamorphic grade indicator for low-grade metamorphic rocks. J Metamorph Geol 14:115–124
Ziegler W (1956) Geologische Studien in den Flyschgebieten des Oberhalbsteins (Graubünden). Eclogae Geol Helv 49:1–78
Zulbati F (2008) Structural and metamorphic evolution of the phengite-bearing schists of the northern Adula Nappe (Central Alps, Switzerland). Geol J 43:33–57
Acknowledgments
Excellent preparation of numerous samples by W. Tschudin, as well as great support in the field by G. Derungs, both members of Basel University, are gratefully acknowledged. The use of the samples from the study by Petrova et al. (2002) as well as from the collection of M. Frey (Basel University) is acknowledged. A. Riemann from Potsdam University is thanked for a supportive field trip as well as for the help in the Raman laboratory of Potsdam University. O. Beyssac and R. Ferreiro Mählmann are thanked for their comments and suggestions that improved the quality of an earlier version this manuscript. The paper benefited from the careful and constructive reviews of M. Engi and an anonymous reviewer. The helpful editorial comments of M. Handy substantially improved the quality of the manuscript. Funding by the Swiss National Science Foundation (project NF-200020-113585 and precursor project NF-200020-103585) is gratefully acknowledged. S.M. Schmid acknowledges support by the Alexander-von-Humboldt Foundation during the final stages of the synthesis of the data presented here.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wiederkehr, M., Bousquet, R., Ziemann, M.A. et al. 3-D assessment of peak-metamorphic conditions by Raman spectroscopy of carbonaceous material: an example from the margin of the Lepontine dome (Swiss Central Alps). Int J Earth Sci (Geol Rundsch) 100, 1029–1063 (2011). https://doi.org/10.1007/s00531-010-0622-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00531-010-0622-2