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A sequence stratigraphic approach to a Middle Triassic shelf-slope complex of the Ligurian Alps (Ligurian Briançonnais, Monte Carmo-Rialto unit, Italy)

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Abstract

The Mesozoic sedimentary cover belonging to the Monte Carmo-Rialto unit of the Ligurian Briançonnais domain is composed of Scythian clastics and Anisian to Carnian carbonate rocks over 300 m thick. This paper focuses on the stratigraphy of this carbonate complex, its environmental significance, and its evolution in light of dynamic stratigraphy. Our facies analysis of limestones and dolomites of the Triassic complex allowed us to reconstruct an environmental model. Data support a distally steepened carbonate ramp of Anisian age evolving to a more diversified Ladinian platform with an oolitic sand-bar belt separating the lagoon from the slope. The Monte Carmo-Rialto slope facies are the only witnesses of deep sedimentation in the Triassic terrains of the Ligurian Briançonnais domain, otherwise represented by shallow-water carbonate deposits. On the basis of facies succession, we have identified nine medium-scale cycles (third-order sequences) in the study area, comparable to those evidenced in the Briançonnais s.s. domain by the French authors. Small-scale cycles analysis evidenced mainly shallowing-upward trends in the examined sequences; although a few evidences of transgression-related deposits (deepening upward cycles) have been found at the base three sequences, they have been mostly obliterated by dolomitization and masked by local tectonics. For this reason, we can undoubtedly distinguish only the part of each sequence belonging to HST, while the TST, though present, still remains a partition that cannot be precisely characterized. In the same way, LSTs are not present in the Monte Carmo-Rialto unit, due to the original relative landward position of the examined area. Sequence stratigraphy analysis indicates different long-term dynamics for the two evolutionary stages of the Triassic Ligurian platform: a general landward backstepping to moderate progradation during the Early Anisian and true progradation during the latest Anisian and Ladinian. In addition, a good fit with the sequences proposed by the SEPM chart has been found, indicating a correspondence for the third-order sequences of the Middle Triassic.

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References

  • Aigner T (1979) Schill-Tempestite im Oberen Muschelkalk (Trias, SW-Deutschland). N Jahrb Geol Paläont Abh 157:326–343

    Google Scholar 

  • Aigner T (1982) Calcareous tempestites: storm dominated stratification in Upper Muschelkalk limestones (Middle Triassic, SW Germany). In: Einsele G, Seilacher A (eds) Cyclic and event stratification. Springer, Berlin Heidelberg New York, pp 180–188

    Google Scholar 

  • Aigner T (1984) Dynamic stratigraphy of epicontinental carbonates, Upper Muschelkalk (M. Triassic), South-German Basin. N Jahrb Geol Paläont Abh 169:127–159

    Google Scholar 

  • Aigner T (1985) Storm depositional systems. Lecture Notes in Earth Sciences 3, Springer, Berlin Heidelberg New York, 174 pp

  • Arbey F (1980) Les formes de la silice et l’identification des évaporites dans les formations silicifiées. Bull Cent Rech Explor Prod Elf-Aquitaine 4:309–365

    Google Scholar 

  • Baud A (1976) Les terriers de Crustacés décapodes et l’origine de certain facies du Trias carbonaté. Eclogae Geol Helv 69:415–424

    Google Scholar 

  • Baud A (1987) Stratigraphie et sedimentologie des calcaires de Saint-Triphon (Trias, Préalpes, Suisse et France). Mem Lab Geol Min Geophys Mus Geol Univ Lausanne 1:1–322

    Google Scholar 

  • Baud A, Megard-Galli J (1977) Les milieux carbonatés du Trias et l’application de méthodes sédimentologiques comme outil de corrélation (France et régions limitrophes). Bull BRGM IV 3:279–284

    Google Scholar 

  • Boiteau A (1970) Etude géologique de la région du Monte Carmo (Alpes Ligures, Italie). Unpublished MD Thesis, Unedited thesis, Université de Paris, 78 pp

  • Boni A, Cerro A, Gianotti R, Vanossi M (1971) Note illustrative della Carta Geologica d’Italia alla scala 1:100.000 – Foglio 92–93, Albenga-Savona. Serv Geol It, 142 pp

  • Brenchley PJ (1985) Storm influenced sandstone beds. Mod Geol 9:369–396

    Google Scholar 

  • Caby R, Galli J (1964) Existence de cinerites et de tuf volcaniques dans le Trias moyen de la zone Briançonnaise. C R Acad Sci Paris 259:417–420

    Google Scholar 

  • Ciarapica G, Passeri L (1976) Deformazioni da fluidificazione ed evoluzione diagenetica della Formazione Evaporitica di Burano. Boll Soc Geol It 95:1175–1199

    Google Scholar 

  • Colmi C (1991) Il siderolitico delle Alpi Liguri nella zona compresa tra il torrente Ellero e il torrente Casotto. Caratteri litologici, mineralogici e petrografici. Unpublished MD Thesis, Università degli Studi, Pavia, 80 pp

  • Cortesogno L, Rossi PM, Vannucci R (1982) Episodi vulcanici in successioni carbonatiche medio-triassiche prepiemontesi (Cogoleto, Liguria). Riv It Paleont Strat 88:21–44

    Google Scholar 

  • Dallagiovanna G, Lualdi A, Seno S, Vanossi M (1984) Nuovi dati e precisazioni sull’unità di C. Tuberto (Prepiemontese delle Alpi Liguri). Boll Soc Geol It 28:419–430

    Google Scholar 

  • Dallagiovanna G, Gaggero L, Maino M, Seno S, Tiepolo M (2009) U-Pb zircon ages for post-Variscan volcanism in the Ligurian Alps (northern Italy). Geol Soc Lond 166:1–14

    Article  Google Scholar 

  • Decarlis A, Lualdi A (in press) Late Triassic-Early Jurassic paleokarst from the Ligurian Alps and its geological significance. Swiss J Geosci. doi:10.1007/s00015-008-1302-0

  • Duringer P (1953) Tempetes et tsunamis: des dépots de vagues de haute énergie intermittente dans le Muschelkalk supérieur (Trias germanique) de l’Est de la France. Bull Soc Geol France 7(t. XXVI):1177–1185

    Google Scholar 

  • Frey RW, Pemberton SG, Saunders TDA (1990) Ichnofacies and bathymetry: a passive relationship. J Paleontol 64:155–158

    Google Scholar 

  • Hardenbol J, Thierry J, Farley MB, Jacquin T, de Graciansky P-C, Vail PR (1998) Mesozoic and Cenozoic sequence chronostratigraphic framework of European Basins. SEPM Spec Publ 60:3–13

    Google Scholar 

  • Issel A (1887) La nuova carta geologica delle riviere liguri e delle Alpi Marittime. Boll Soc Geol It 6:209–224

    Google Scholar 

  • Lualdi A (1985) Elementi di correlazione in serie mediotriassiche del Brianzonese s.s., Brianzonese ligure e Prepiemontese. Rend Soc Geol It 8:43–46

    Google Scholar 

  • Lualdi A (1991) Aggiornamenti alla stratigrafia triassica delle Alpi liguri (Brianzonese e Prepiemontese). Rend Soc Geol It 14:75–78

    Google Scholar 

  • Lualdi A, Bianchi U (1990) La Formazione di Costa Losera: una nuova unità stratigrafica dell’Anisico delle Alpi liguri (Brianzonese e Prepiemontese). Atti Tic Sci Terra 33:33–62

    Google Scholar 

  • Lualdi A, Porro A (1988) Analisi stratigrafico-deposizionale e petrografica dei livelli a silice e/o barite nelle serie mediotriassiche del Brianzonese e Prepiemontese liguri. Mem Sc Geol Univ Padova 15, XL:203–227

  • Lualdi A, Santi G (1987) Esempi di sequenze tempestitiche nel Trias delle Alpi liguri. Atti Tic Sci Terra 31:37–53

    Google Scholar 

  • Lualdi A, Seno S (1986) Osservazioni stratigrafiche e tettoniche nella zona del Rio di Nava (Brianzonese ligure esterno, unità di Ormea). Mem Soc Geol Ital 28:493–503

    Google Scholar 

  • Menardi Noguera A (1984) Nuove osservazioni sulla struttura del Massiccio di Monte Carmo (Alpi liguri). Boll Soc Geol It 103:189–203

    Google Scholar 

  • Pemberton SG (1998) Stratigraphic applications of the Glossifungites ichnofacies; delineating discontinuities in the rock record. AAPG Bull 82:21–55

    Google Scholar 

  • Pemberton SG, McEachern JA, Saunders T (2004) Stratigraphic applications of substrate-specific ichnofacies: delineating discontinuities in the rock record. Geol Soc Lond Spec Publ 228:29–62

    Article  Google Scholar 

  • Posamentier HW, Allen GP (1999) Siliciclastic sequence stratigraphy – concepts and applications. SEPM Concepts Sedimentol Paleontol 7, 210 pp

    Google Scholar 

  • Read JF (1985) Carbonate platform facies models. AAPG Bull 69:1–21

    Google Scholar 

  • Reineck HE, Singh IB (1972) Genesis of laminated sand and graded rhythmites in storm-sand layers of shell mud. Sedimentology 18:123–128. doi:10.1111/j.1365-3091.1972.tb00007.x

    Article  Google Scholar 

  • Reineck HE, Singh IB (1980) Depositional sedimentary environments. Springer, Berlin Heidelberg New York, p 549

    Google Scholar 

  • Rice DD (1984) Widespread, shallow-marine, storm-generated sandstone units in the Upper Cretaceous Mosby Sandstone, Central Montana. SEPM Spec Publ 34:143–161

    Google Scholar 

  • Seilacher A (1982) General remarks about event deposits. In: Einsele G, Seilacher A (eds) Cyclic and event stratification. Springer, Berlin Heidelberg New York, pp 180–188

    Google Scholar 

  • Seno S, Dallagiovanna G, Vanossi M (2005) A kinematic evolutionary model for the Penninic sector of the central Ligurian Alps. Int J Earth Sci 94:114–129. doi:10.1007/s00531-004-0444-1

    Article  Google Scholar 

  • Soegaard K, Eriksson KA (1985) Evidence of tide, storm, and wave interaction on a Precambrian siliciclastic shelf: the 1700 M.Y. Ortega Group, New Mexico. J Sediment Petrol 55:672–684

    Google Scholar 

  • Van Wagoner JC, Posamentier HW, Mitchum RM, Vail PR, Sarg JF, Loutit TS, Hardenbol J (1988) An overview of sequence stratigraphy and key definitions. SEPM Spec Publ 42:39–45

  • Vanossi M (1969) La serie brianzonese di Salto del Lupo (Liguria occ.): osservazioni sedimentologico-stratigrafiche. Atti Ist Geol Univ Pavia 20:3–16

    Google Scholar 

  • Vanossi M (1970) Contributi alla conoscenza delle unità stratigrafico-strutturali del Brianzonese ligure s.l. Le strutture tettoniche nella zona tra Bardineto e Noli. Atti Ist Geol Univ Pavia 21:37–66

    Google Scholar 

  • Vanossi M (1974) Analisi stratigrafico-strutturale della zona tra le alte valli del Casotto e dell’Ellero (Alpi Marittime). Atti Ist Geol Univ Pavia 24:38–73

    Google Scholar 

  • Vanossi M (1980) Les unités géologiques des Alpes Maritimes entre l’Ellero et la Mer Ligure: un aperçu schématique. Mem Sc Geol Univ Padova 34:101–142

    Google Scholar 

  • Vanossi M (coord) (1991) Alpi Liguri. In: Be-Ma (ed) Guide geologiche regionali, vol 2, 293 pp

  • Vanossi M, Cortesogno L, Galbiati B, Messiga B, Piccardo G, Vannucci R (1986) Geologia delle Alpi liguri: dati, problemi, ipotesi. Mem Soc Geol Ital 28:5–75

    Google Scholar 

  • Zaccagna D (1887) Sulla geologia delle Alpi Occidentali. Boll R Com Geol Ital 18:346–417

    Google Scholar 

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Acknowledgements

We would like to thank L. Passeri for the critical review of an early draft of the text and for useful discussion. M. Tucker and H. Westphal carefully reviewed the manuscript and considerably improved it with useful suggestions. Thank to G. Dallagiovanna and M. Vanossi for some suggestions. Research was supported by M.U.R.S.T. (F.A.R. M. Cobianchi) and PRIN grants (Coord. A. Lualdi).

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  1. Dipartimento Scienze della Terra, Università degli Studi di Pavia, Via Ferrata 1, 27100, Pavia, Italy

    Alessandro Decarlis & Alberto Lualdi

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  1. Alessandro Decarlis
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Correspondence to Alberto Lualdi.

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Decarlis, A., Lualdi, A. A sequence stratigraphic approach to a Middle Triassic shelf-slope complex of the Ligurian Alps (Ligurian Briançonnais, Monte Carmo-Rialto unit, Italy). Facies 55, 267–290 (2009). https://doi.org/10.1007/s10347-008-0170-4

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