 | | Report (chapter) | | an ocean-continent transition: the Platta nappe, eastern Switzerland LAURENT DESMURS 1, GIANRETO MANATSCHAL...1Geology Institute, ETH-Zentrum, CH-8092 Ziirich, Switzerland (e-mail: desmurs @ erdw. ethz. ch) 2EOST-UMR...Arosa zone and its southern prolongation, the Platta nappe of the eastern Swiss Alps. This classical 'ophiolite'...(ocean-continent transition) in the Platta nappe, eastern Switzerland. TR, Triassic; JL, Lower Jurassic;...same tectonic unit, which he called the Rhetic nappe, a term that did not survive but included the ophiolite-bearing |  | | Journal (article/letter/editorial) | | serpentinites from between Davos (Arosa-Platta nappe, Switzerland) and the Valmalenco (Italy). ~D and ~180...- 6 0 and ~10%o, respectively) in the Arosa-Platta nappe indicate that serpentinization took place on...geochemistry of ophiolitic serpentinites from the Arosa-Platta nappe in the eastern Central Alps are contrasted with...those of serpentines from the nearby Valmalenco region. The results help to more clearly define the nature...Austroalpine nappes, from the DavosArosa region, Switzerland, to the Valmalenco, Italy (Fig. 1). The northern |  | | Journal (article/letter/editorial) | | serpentinites belong to two units, one is an ophiolite nappe with a metamorphic gradient from prehnite-pumpellyite...both being part of the highly imbricated Pennine nappe at the boundary with overlying Austroalpine units...eastern Central Alps of Switzerland and Italy. One unit is an ophiolite nappe, and the other is an ultramafic...ultramafic complex (Fig. I). The ophiolite nappe, Arosa-Platta nappe (Upper Jurassic toUpper Cretaceous ) ...extends between Davos, Oberhalbstein, and Engadin, Switzerland. The ultramafic rocks consist of serpentinized |  | | Journal (article/letter/editorial) | | Emile-Argand 11, CP 158, CH-2009 Neuchâtel, Switzerland b Department of Earth Sciences, University of...Université de Lausanne, Anthropole, CH-1015 Lausanne, Switzerland d Institut für Geowissenschaften, Ruprecht-Karls-Universität...available online 11 December 2010 Abstract The Totalp–Platta–Malenco ophiolites in the Eastern Central Alps...antigorite; lizardite þ tremolite ) antigorite þ diopside) have been used to quantify the evolution of the...silicate minerals from the ultramafic bodies of Totalp, Platta and Malenco by secondary ion mass spectrometry |  | | Journal (article/letter/editorial) | | of Bern, Baltzersstrasse 1-3, CH-3012 Bern, Switzerland 2Department of Earth Sciences University of Basel...Basel, Bernoullistrasse 30, CH-4056 Basel, Switzerland The area of the Central Alps (Fig. 1) is delimited...Molasse to the north, the Austroalpine nappes in the Grisons and the Bergell in the east, and the Insubric Line...much of the complexity of their evolution. The nappe stack as a whole shows a central part which is relatively...structural evolution in several parts of the Lepontine nappe stack (e.g. northern Maggia-Lebendun: GRUJIC & MANCKTELOW |  | Cadisch, J., Niggli, P., Rutsch, R., Gunzler-Seiffert, H., Huttenlocher, H., Burri, C., Wenk, E., Wells, M.K. (1948) An account of the long field meeting held in Switzerland. Proceedings of the Geologists' Association, 59 (4) 181 doi:10.1016/s0016-7878(48)80001-5 | Journal (article/letter/editorial) | | AN ACCOUNT OF THE LONG FIELD MEETING HELD IN SWITZERLAND 6th-21st September, 1947 By J. CADISCH, P. NIGGLI...circulated amongst members of the party on arrival in Switzerland. Since these pamphlets included a great deal...made to the Director General of Post Offices of Switzerland for providing the Association with the coloured...Fig. 25 (opp, p. 228). GEOLOGY OF THE MOLASSE REGION TO THE SOUTH OF BERN By R. Rutscb (Bern) Between...polygenic or monogenic 183 FIELD MEETING IN SWITZERLAND conglomerates known as the "Nagelfluh" (=nailstudded |  | | Journal (article/letter/editorial) | | CH-4001 Basel, Switzerland and Mineralogical Institute of the University CH-4056 Basel, Switzerland Probably...the Alps-and spent most of his spare time in this region and who, moreover, dedicated most of his scientific...excavations in GalloRoman sites in southern Switzerland (Canton Valais, Binn) several crystal treasures...Institute of the University of Basel. Figure 3. Diopside, Cervandone (Italy). Length of crystals 10 mm...in several large natural history museums in Switzerland and abroad were assembled (for example, the outstanding |  | | Journal (article/letter/editorial) | | Metamorphic Grade in the Eastern Central Alps (Switzerland and Italy) D. J. M. Burkhard Mineralogical Petrological...greenschist facies metamorphism, from the Oberengadin, Switzerland, and (2) stoichiometric, almost pure, cobaltite...silicate association of antigorite + olivine + diopside, from Val Malenco, Italy. A comparison with data...sequence in Oberengadin, Switzerland, and in the adjacent Val Malenco region, Italy (Burkhard, 1987),...chemically identical phases from the Outokumpu region, Finland (Klemm and Weiser, 1965). This comparison |  | | Journal (article/letter/editorial) | | particular, the Eclogite Zone, the Adula Nappe, and the Monte Rosa Nappe). Within the Austroalpine Koralm Complex...was not related to the compressional phase during nappe stacking, but to the extensional exhumation of the...Maira Massif, the Gran Paradiso, the Monte Rosa Nappe, and the Eclogite Zone; this argues for exhumation...within a still-active subduction zone. In the Adula Nappe, decompression was isothermal. At amphibolite- to...heating during decompression (except for the Adula Nappe). This argues for cessation of subduction and removal |  | | Journal (article/letter/editorial) | | Continent Transition: The Totalp unit in SE Switzerland S. Picazo a,⁎, G. Manatschal b, M. Cannat a,...peridotites of the Totalp unit near Davos (SE Switzerland), and we propose that the Totalp unit is formed...some of these outcrops, in particular in SE Switzerland, it has been shown that the ultramafic rocks were...Froitzheim, 1994; Manatschal et al., 2006), in the Platta nappe (Desmurs et al., 2001; Froitzheim and Manatschal...unit located north of Davos in SE Switzerland. In contrast to the Platta and Tasna nappes, this unit was |  | | Journal (article/letter/editorial) | | the Alpine-Apenninic ophiolites (France-Italy-Switzerland-Austria) JACQUELINE DESMONS Centre de Recherches...the Western and West-Central Alps; the Arosa and Platta nappes in the eastern Central Alps (Graubiinden);...M-- Milano; M a = Malenco; N = Napoli; P l - - Platta; Q-- Queyras; R = Roma; R e = Rechnitz Window;...flysch nappe; Gt = G~ts; L = Lanzo massif; M = Montgen~vre; M A =Maritime Alpine Flysch nappe; Q=Queyras;...from observations made in the Zermatt-Val d'Aosta region (Bearth, 1974, 1976; Dal Piaz, 1974a), or Internal |  | | Report (chapter) | | collision and exhumation recorded in the Adula nappe, central Alps Thorsten J. Nagel Geological Society...collision and exhumation recorded in the Adula nappe, central Alps THORSTEN J. NAGEL Geologisches Institut...(e-mail: tnagel@uni-bonn.de) Abstract: The Adula nappe in the Central Alps represents a lithospheric mélange...stage. Some recent studies propose that the Adula nappe got assembled after the formation of high-pressure...conditions post-date formation of the Central Alpine nappe stack. In this paper, the associated field gradient |  | | Book | | Cover: View of Piz Tumpiv (Canton Graubünden, Switzerland) looking WSW. The steep gully with a string of...(Aar massif ) and Mesozoic sediments (Cavistrau nappe). See Fig. 6-10B for explanation. Photo by O. A...Cross-section through the Central Alps of Switzerland showing nappe structures in Mesozoic-Cenozoic sediments...the Helvetic Nappe Complex. . . . . . . . . . The Permo-Carboniferous in the Penninic Nappe Complex. ....Austroalpine Nappe Complex. . . . . . The Permo-Carboniferous in the Southalpine Nappe System. . . . |  | | Book | | Cover: View of Piz Tumpiv (Canton Graubünden, Switzerland) looking WSW. The steep gully with a string of...(Aar massif ) and Mesozoic sediments (Cavistrau nappe). See Fig. 6-10B for explanation. Photo by O. A...Cross-section through the Central Alps of Switzerland showing nappe structures in Mesozoic-Cenozoic sediments...the Helvetic Nappe Complex. . . . . . . . . . The Permo-Carboniferous in the Penninic Nappe Complex. ....Austroalpine Nappe Complex. . . . . . The Permo-Carboniferous in the Southalpine Nappe System. . . . |  | | Journal (article/letter/editorial) | | (up to the eclogite facies), are included in a nappe stacking formed during Tertiary subduction- and...(Italy); M: Val Malenco (Italy); P: La Platta (Eastern Switzerland). Our sampling areas Chenaillet – Montgenèvre...below the Apulian margin of the Tethys. A similar nappe stacking, involving the upper part of the oceanic...Val Malenco (northern Italy) and La Platta (eastern Switzerland). In this case, the higher the nappes...magmatic constituents of the sampled gabbros. Cpx is diopside-salite (CH17; Table 1), shows variable stages |  | Puga, Encarnación, Fanning, Mark, Díaz de Federico, Antonio, Nieto, José Miguel, Beccaluva, Luigi, Bianchini, Gianluca, Díaz Puga, Miguel Angel (2011) Petrology, geochemistry and U–Pb geochronology of the Betic Ophiolites: Inferences for Pangaea break-up and birth of the westernmost Tethys Ocean. Lithos, 124 (3) 255-272 doi:10.1016/j.lithos.2011.01.002 | Journal (article/letter/editorial) | | The Betic Zone has been subdivided into three nappe complexes known from bottom to top as the Nevado–Filábride...sedimentation Meso-Alpine event Continental collision Nappe stacking Exhumation and extensional collapse Late...et al., 1983), Corsica (Saccani et al., 2008), Platta (Desmurs et al., 2002), Gets (Bill et al., 2000)...average values of T-MORB basalts from Corsica, Platta and Gets ophiolites, and present-day volcanism...Internal Ligurides (Rampone et al., 1998) and from Platta Nappe basalts (Schaltegger et al., 2002), interpreted |  | Manatschal, Gianreto, Sauter, Daniel, Karpoff, Anne Marie, Masini, Emmanuel, Mohn, Geoffroy, Lagabrielle, Yves (2011) The Chenaillet Ophiolite in the French/Italian Alps: An ancient analogue for an Oceanic Core Complex?. Lithos, 124 (3) 169-184 doi:10.1016/j.lithos.2010.10.017 | Journal (article/letter/editorial) | | metamorphism during its emplacement in the Alpine nappe stack. Pillow lavas showing a Mid Ocean Ridge Basalt...(Fig. 1). During the emplacement within the Alpine nappe stack, the Chenaillet Ophiolite was only weakly...(Loubatière) B P8 LU (Platta) G MS13 (Platta) G MG534 G MG536 S VEP8 UU (Platta) S NAP8 LU (Platta) S SUP3 LU (Platta)...(Platta) S SERP-02 P L-UM112 P Or-UM201 27.99 30.58 34.86 32.32 41.15 35.79 34.51 39.19 29.44 48.13...NAP8, SUP3: basalt, gabbro, serpentinites from Platta lower (LU) and upper (UU) units (Desmurs, 2001; |  | Vitale Brovarone, Alberto, Beltrando, Marco, Malavieille, Jacques, Giuntoli, Francesco, Tondella, Ermete, Groppo, Chiara, Beyssac, Olivier, Compagnoni, Roberto (2011) Inherited Ocean–Continent Transition zones in deeply subducted terranes: Insights from Alpine Corsica. Lithos, 124 (3) 273-290 doi:10.1016/j.lithos.2011.02.013 | Journal (article/letter/editorial) | | Li: Linguizetta; Te: Tenda massif; In: Inzecca region; RM: Rio Magno; Pi: Pineto; Ma: Macinaggio; and...Potdevin, 1984). In the less metamorphosed Inzecca region of the Schistes Lustrés (Fig. 1), geochemical work...rocks (cf. Section 1), and of the Castagniccia region (Caron and Delcey, 1979; Lahondère, 1996), mostly...Péquignot and Potdevin, 1984). Similarly to the Inzecca region of the Schistes Lustrés, metabasalts from the ophiolitic...Saccani et al., 2000). In contrast, the Nebbio nappe basalts show enriched E-MORB affinity referred to |  | Laborda-López, Casto, Marchesi, Claudio, López Sánchez-Vizcaíno, Vicente, Gómez-Pugnaire, María Teresa, Dale, Christopher W., Jabaloy-Sánchez, Antonio, Padrón-Navarta, José Alberto, Román-Alpiste, Manuel J., Garrido, Carlos J. (2020) Geochemical evolution of rodingites during subduction: insights from Cerro del Almirez (southern Spain). Lithos, 370. 105639pp. doi:10.1016/j.lithos.2020.105639 | Journal (article/letter/editorial) | | assemblage dominated by granditic garnet, chlorite and diopside. At the ocean floor and e- during subduction...host serpentinites to chlorite (± olivine)- al diopside rims. rn Grandite-metarodingites interacted...zoisite and vesuvianite), Ca-Mg pr silicates (diopside and tremolite) and chlorite through metasomatic...andradite (grandite)-rich garnet + chlorite + diopside + titanite + magnetite + apatite pr + ilmenite...red-brownish garnet (Grt-1) and less abundant diopside locally al with tiny exsolutions of magnetite |  | | Journal (article/letter/editorial) | | rodingitelike assemblages (prehnite, grossular and diopside) affects the dikelets of Mg-rich gabbros intruding...gabbros, clinopyroxene is partially replaced by diopside + colourless amphibole. 5.2. Mineral chemistry...for the Internal Liguride (Rampone et al., 1998), Platta (Schaltegger et al., 2002) and Tuscany (Tribuzio...(Northern Apennine) Montgenevre (Western Alps) Platta (Central Alps) Engadine (Eastern Alps) Corsica...for the mantle sources during ocean opening Gets nappe: Bill et al., 2000). In particular, the available |  | Picazo, S., Müntener, O., Manatschal, G., Bauville, A., Karner, G., Johnson, C. (2016) Mapping the nature of mantle domains in Western and Central Europe based on clinopyroxene and spinel chemistry: Evidence for mantle modification during an extensional cycle. Lithos, 266. 233-263 doi:10.1016/j.lithos.2016.08.029 | Journal (article/letter/editorial) | | la Terre, Bâtiment Géopolis CH-1015 Lausanne, Switzerland MA 2: IPGS-EOST; University of Strasbourg-CNRS;...Piccardo et al, 2007; McCarthy and Müntener, 2015) and Platta, Tasna and Malenco in the eastern part of the Central...mantle across the Tasna, Chenaillet, Malenco and Platta units is subdivided into a lithospheric subcontinental...proposed model for the OCT-type section of the Platta-Malenco area PT can be applied to other sections...Müntener (2015) interpreted that samples from Lower Platta, Internal Ligurides and Southern Tuscany (with |  | Locatelli, Michele, Verlaguet, A., Agard, P., Federico, L., Angiboust, S. (2018) Intermediate-depth brecciation along the subduction plate interface (Monviso eclogite, W. Alps) Lithos, 320. 378-402 doi:10.1016/j.lithos.2018.09.028 | Journal (article/letter/editorial) | | Alps, Italy) to the Zermatt-Saas zone (Valais, Switzerland EP and Valle D’Aosta, Italy). Noteworthily...Used standards were Fe2O3 (Fe), MnTiO3 (Mn, Ti), diopside (Mg, Si), CaF2 (F), orthoclase (Al, K), anorthite...by talc, chlorite, garnet, acicular amphibole, diopside ACCEPTED MANUSCRIPT and rare phengite) that...brown metasomatic garnet, acicular amphibole and diopside plus very rare phengite. Lawsonite pseudomorphs...sub-millimeter scale veins of syntaxial talc, diopside and chlorite radiates from the hydrated metasomatic |  | | Book | | Republic of Germany, Treland, The Netherlands, Switzerland, United Kingdom MER 1. de la Gj DE BARENTS...Republic of Germany, Ireland, the Netherlands, Switzerland, United Kingdom @® Denmark, Finland, Iceland...Republic of Germany, Ireland, The Netherlands, Switzerland, United Kingdom Published in cooperation with...05.0500) The Region West of the Tauern Windows. ncaa aatl.. os. to. ee eee The-Region North of theslauern... ee.010 eee The Region South of the Tauern Window % ...40%.+ 52.4... ee ‘Phe Region East of the’Tauern |  | Halama, Ralf, Savov, Ivan P., Garbe-Schönberg, Dieter, Schenk, Volker, Toulkeridis, Theofilos (2013) Vesuvianite in high-pressure-metamorphosed oceanic lithosphere (Raspas Complex, Ecuador) and its role for transport of water and trace elements in subduction zones. European Journal of Mineralogy, 25 (2) 193-219 doi:10.1127/0935-1221/2013/0025-2281 | Journal (article/letter/editorial) | | phases in the metamorphosed dykes include chlorite, diopside, amphibole and vesuvianite. In each dyke, only...these phases either amphibole þ vesuvianite, diopside þ chlorite, or amphibole þ chlorite dominate the...peridotite; amph-vsv ¼ amphibole-vesuvianite; di-chl ¼ diopside-chlorite; amph-chl ¼ amphibole-chlorite. b.d.l...Mariana forearc (Alt & Shanks, 2006), 4 ¼ Arosa-Platta nappe, Alps (Burkhard & O’Neil, 1988), 5 ¼ Valmalenco...Serpentinite Diopside-chlorite schist Amphibole-vesuvianite schist Amphibole-vesuvianite schist Diopside-chlorite | | | Book | | Republic of Germany, . Ireland, The Netherlands, Switzerland, United Kingdom • 1 DF • IV 0 I ' '~ \,...Republic of Germany, Ireland, the Netherlands, Switzerland, United Kingdom • Denmark, Finland, Iceland...Republic of Germany, Ireland, The Netherlands, Switzerland, United Kingdom Published in cooperation with...57 The Region West of the Tauern Window ... . ................................ . The Region North of.... . The Region South of the Tauern Window .................................... . The Region East of the |
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