Sinemurian to lowermost Toarcian ammonites of the Brescian Prealps (Southern Alps, Italy): preliminary biostratigraphical framework and correlations

• Autorzy: Meister Ch. , Schirolli P. , Dommergues J-L.
• Języki publikacji: EN

Abstrakty

EN

A set of 28 ammonite biohorizons or faunal assemblages is proposed for the Sinemurian, the Pliensbachian and the lowermost Toarcian of the Brescian Prealps, in part based on the published data of the authors of this contribution and partly on new results, derived both from recent field investigations and from the study of the historical collection of Lower Jurassic ammonites preserved in the Museum of Natural Sciences of Brescia (Northern Italy). The biohorizons are present in the Liassic carbonate succession of the Brescian Prealps, cropping out between the eastern surroundings of Brescia (Botticino), to the east, and Lake Iseo, to the west. Since the Hettangian this region was subjected to Jurassic rifting. The area of study was located on the eastern border of the wide Lombardian Basin, a part of the southern continental passive margin of Tethys. An articulated fault-system, trending from Brescia to the North, separated the western subsiding area of the Val Trompia-Sebino Basin from the eastern Botticino structural high. After the drowning of the Rhetian-Hettangian Corna Platform, the very thick synrift succession of the Medolo Group accumulated in the Val Trompia-Sebino Basin, whereas the coeval reduced sequence of the Rezzato Encrinite and the overlying Botticino Corso Rosso covered the Botticino High, subsequent to the Early Sinemurian. The ammonite biohorizons and assemblages recognised are quite well integrated and correlable with either the NW European standard zonation or the different zonations proposed for the Tethyan Realm.

Słowa kluczowe

EN

Early Jurassic; ammonites; lithostratigraphy; biostratigraphy; rifting; Val Trompia-Sebino Basin; Botticino High; Southern Alps; Brescian Prealps; Italy

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2009
• Tom: Vol. 7, no. 1
• Strony: 9--18
• Opis fizyczny: Bibliogr. 46 poz.

Twórcy

autor

Meister Ch.

autor

Schirolli P.

autor

Dommergues J-L.

• 1Muséum d’Histoire Naturelle, Département de Géologie et Paléontologie, 1 Rte de Malagnou, CP. 6434, CH-1211 GenŻve 6, Switzerland,

Bibliografia

• 1. Blau J. 1998. Monographie der Ammoniten des Obersinemuriums (Lotharingium, Lias) der Lienzer Dolomiten (Osterreich): Biostratigraphie, Systematik und Palaobiogeographie. Revue de Paléobiologie, 17, 1: 177-285.
• 2. Blau J. and Meister C. 2000. Upper Sinemurian ammonite successions based on 41 faunal horizons: an attempt at worldwide correlations. GeoResearch Forum, 6: 3-12.
• 3. Bernoulli D., Caron C., Homewood P., Kalin O. and van Stuijvenberg J. 1979. Evolution of continental margins in the Alps. Schweizerische Mineralogische und Petrographische Mitteilungen, 59: 165-170.
• 4. Bertotti G., Picotti V., Bernoulli D. and Castellarin A. 1993. From rifting to drifting: tectonic evolution of the South-Alpine upper crust from the Triassic to the Early Cretaceous. Sedimentary Geology, 86: 53-76.
• 5. Bonarelli G. 1894. Contribuzione alla conoscenza del Giura-Lias lombardo. Atti della Regia Accademia delle Scienze di Torino, 30: 1-18.
• 6. Braga J. -C. 1983. Ammonites del Domerense de la zona subbetica (Cordilleras beticas, Sur de Espana). Tesis doctoral, Universidad de Granada: 410 p.
• 7. Cantaluppi G. 1966. Fossili sinemuriani e domeriani nel "Corso bianco" ad Est di Brescia. Atti dell'Istituto Geologico dell'Universit di Pavia, 17 (1965-66): 103-120.
• 8. Cantaluppi G. and Cassinis G. 1984. Il passaggio Domeriano-Toarciano in Val Navezze (Brescia). Bollettino della Societi Geologica Italiana, 103: 233-249.
• 9. Cassinis G. 1968. Stratigrafia e tettonica dei Tereni mesozoici compresi tra Brescia e Serle. Atti dell'Istituto Geologico dell'Universiti di Pavia, 19: 50-152.
• 10. Cassinis G. and Cantaluppi G. 1967. Nuovi dati paleontologici per una piu approfondita conoscenza del limite cronologico superiore della "Corna" di Botticino (Brescia). Atti dell'Istituto Geologico dell'Universiti di Pavia, 18: 51-64.
• 11. Cassinis G. and Schirolli P. 1995. Sommario dell'evoluzione sedimentaria, tettonica e paleogeografica del margine occidentale dell "alto strutturale" giurassico di Botticino (Brescia), nel quadro di una recente ricerca. Atti Ticinensi di Scienze della Terra, 37 (1994): note brevi 1-6.
• 12. Castellarin A. 1972. Evoluzione paleotettonica sinsedimentaria del limite tra "piattaforma veneta" e "bacino lombardo" a nord di Riva del Garda. Giornale di Geologia, s. 2, 38 (1970): 11-212.
• 13. Castellarin A. and Picotti V. 1990. Jurassic tectonic framework of the eastern border of the Lombardian basin. Eclogae Geologicae Helvetiae, 83: 683-700.
• 14. Cita M. B. 1964. Contribution la connaissance du Domerien-type. In: Colloque du Jurassique (Luxembourg, 1962). Comptes Rendus et Mémoires de l'Institut Grand-Ducal, Section des Sciences Naturelles, Physiques et Mathématiques, 173-188.
• 15. Cita M. B., Cassinis G. and Pozzi R. 1961. Introduction l'etude du Domerien-type. In: Colloque sur le Lias fran~ais (Chambery, 1960), Mémories du Bureau des Recherches Géologique et MiniŻres, 4: 323-344.
• 16. Corna M., Dommergues J. -L., Meister C. and Mouterde R. 1997. Sinemurien. In: Groupe franais d'etude du Jurassique: Biostratigraphie du Jurassique ouest-europeen et mediterraneen: zonations paralles et distribution des invertebres et microfossiles. E. Cariou and P. Hantzpergue (Coord.). Bulletin des Centres de Recherche Exploration-Production Elf-Aquitaine, Mémoire, 17: 9-14.
• 17. Dean W. T., Donovan D. T. and Howarth M. K. 1961. The Liassic ammonite zones and subzones of the North West European Province. Bulletin of the British Museum (Natural History) Geology, 4, 10: 435-505.
• 18. Del Campana D. 1900. I Cefalopodi del Medolo di Valtrompia. Bollettino della Societ Geologica Italiana, 19, 3: 555-642.
• 19. Dommergues J. -L., Ferretti A. and Meister C. 1994. Les faunes d'ammonites du Sinemurien de l'Apennin Central (Marches et Toscane, Italie). Bollettino della Societi Paleontologica Italiana, 33, 1: 13-42.
• 20. Dommergues J. -L. and Meister C. 1990. Les faunes d'ammonites de l'Austroalpin Moyen dans les Alpes Rhetiques italiennes (region de Livigno); biostratigraphie et implications paleogeographiques. Revue de Paléobiologie, 2: 291-307.
• 21. Dommergues J. -L., Meister C. and Bohm F. 1995. New data on Austroalpine Liassic ammonites from the Adnet quarries and adjacent areas (Oberosterreich, Northern Calcareous Alps). Jahrbuch der Geologischen Bundesanstalt, 138: 161-205.
• 22. Dommergues J. -L., Meister C. and Schirolli P. 1997. Les successions des ammonites du Sinemurien au Toarcien basal dans les Prealpes de Brescia (Italie). Memorie di Scienze Geologiche, 49: 1-26.
• 23. Faraoni P., Marini A., Pallini G. and Venturi F. 1996. New Carixian ammonite assemblages of Central Apennines (Italy), and their impact on Mediterranean Jurassic biostratigraphy. Paleopelagos, 6: 75-122.
• 24. Ferretti A. 1967. Il limite Domeriano-Toarciano alla Colma di Domaro (Brescia), stratotipo del Domeriano. Rivista Italiana di Paleontologia, 73, 3: 741-756.
• 25. Gaetani M. 1975. Jurassic stratigraphy of the Southern Alps. In: Coy Squyres (Ed.): Geology of Italy, 377-402, The Earth Sciences Society of the Libyan Arab Republic, Tripoli.
• 26. Geczy B. and Meister C. 1998. Les ammonites du Domerien de la montagne du Bakony (Hongrie). Revue de Paléobiologie, 17, 1: 69-161.
• 27. Gradstein F., Ogg J. and Smith A. 2004. A geologic time scale 2004, 1-589. Cambridge University Press.
• 28. Howarth M. K. 1992. The ammonite family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society, 145 (586): 1-106; 146 (590): 107-200.
• 29. Macchioni F. 2001. Ammonites of the Domerian- Early Toarcian in the Subbetic Zone and in the Umbria-Marche Apennines. Taxonomy, taphonomy, biostratigraphy and paleobiogeography. Unpublished PhD Thesis, University of Perugia: 183 p.
• 30. Meister C., Blau J. and Bohm F. 1994. Ammonite biostratigraphy of the Pliensbachian stage in the Upper Austroalpine Jurassic. Eclogae Geologicae Helvetiae, 87, 1: 139-155.
• 31. Meister C., Blau J, Dommergues J. -L., Feist- Burkhardt S., Hart M., Hesselbo S. P., Hylton M., Page K. and Price G. 2003. A proposal for the Global Boundary Stratotype Section and Point (GSSP) for the base of the Pliensbachian Stage (Lower Jurassic). Eclogae Geologicae Helvetiae, 96: 275-297.
• 32. Meister C. and Friebe J. G. 2003. Austroalpine Liassic ammonites from Vorarlberg (Austria, Northern Calcareous Alps). Beiträge zur Paläontologie, 28: 9-99.
• 33. Picotti V. 1991. Modes of continental rifting and alpine inversion in the Brescia region, Central Southern Alps, Italy. Terra Abstracts, 3: 234.
• 34. Picotti V., Casolari E., Castellarin A., Mosconi A., Cairo E., Pessina C. and Sella M. 1997. Structural evolution of the Eastern Lombardian Prealps: Alpine inversion of a Mesozoic Rifted Margin, 1-102. Agip.
• 35. Sarti M., Bosellini M. and Winterer E. L. 1992. Basin geometry and architecture of Tethyan passive margin, Southern Alps, Italy. Implications for Rifting Mechanisms. In: J. S. Watkins, F. Zhiqiang and F. McMillen (Eds), Geology and geophysics of continental margins. Memoir of the American Association of Petroleum Geologists, 53: 241-258.
• 36. Schirolli P. 1990. Dati litologico-stratigrafici sul "Medolo" liassico a NW della Colma di Domaro, in Val Trompia (Brescia). Atti Ticinensi di Scienze della Terra, 33: 157-175. Schirolli P. 1992. Note preliminari a uno studio stratigrafico-sedimentologico del Medolo giurassico nei dintorni di Brescia. Rendiconti dell' Istituto Lombardo Accademia di Scienze e Lettere, B, 125 (1991): 215-224.
• 37. Schirolli P. 1994. La successione bacinale giurassica, tra la Corna e le Radiolariti, del Bresciano centro-occidentale: ricerche stratigrafiche ed evoluzione paleogeografico-strutturale. Unpublished PhD Thesis, University of Pavia: 225 p.
• 38. Schirolli P. 1997. La successione liassica nelle Prealpi bresciane centro-occidentali (Alpi Meridionali, Italia): stratigrafia, evoluzione paleogeografico- strutturale ed eventi connessi al rifting. Atti Ticinensi di Scienze della Terra, serie speciale, 6: 1-137.
• 39. Schirolli P. 2002a. A preliminary geological study for the scientific evaluation of the Domerian stratotype locality (Mt. Domaro, Gardone V. T. - Brescia, Italy). 6th International Symposium on the Jurassic System, Abstract Book, 12-22
• 40. September 002, Palermo.
• 41. Schirolli P. 2002b. Mass movement deposits from the Medolo Group of the Jurassic Eastern Sebino Basin (Southern Alps, Italy). 6th International Symposium on the Jurassic System, Abstract Book, 12-22 September 2002, Palermo.
• 42. Schirolli P. 2002c. Encrinite di Rezzato; Corso Rosso di Botticino; Calcare di Domaro. In: Delfrati, Falorni, Groppelli, Izzo, Pampaloni, Petti, Catalogo delle Formazioni, Uniti validate. Quaderni del Servizio Geologico d'Italia, Serie III, Vol. 7, Fasc. III, Roma.
• 43. Vecchia O. 1946. Sulla presenza del Lotaringiano nel Medolo del Montisola (Sebino-Lombardia). Rivista Italiana di Paleontologia e Stratigrafia, 52: 14-28.
• 44. Venturi F. and Nannarone C. 2002. Ammoniti del Sinemuriano inferiore del Monte Cetona (Prov. di Siena). Bollettino della Societi Paleontologica Italiana, 41, 2-3: 131-162.
• 45. Venturi F., Nannarone C. and Bilotta M. 2005. Early Pliensbachian ammonites from the Furlo Pass (Marche, Italy): two new faunas for the middlewestern Tethys. Bollettino della Societ Paleontologica Italiana, 44, 2: 81-115.
• 46. Winterer E. L. and Bosellini A. 1981. Subsidence and sedimentation on Jurassic passive continental margin, Southern Alps, Italy. Bulletin of the American Association of Petroleum Geologists, 65: 394-421.