Triassic pegmatites in the Mesozoic middle crust of the Southern Alps (Italy): Fluid inclusions, radiometric dating and tectonic implications

Eclogae Geologicae Helvetiae

Volumn 89, Issue 1, 1996, Pages 505-525

  Sanders, Carlo A E ^a   Bertotti, Giovanni ^a   Tommasini, Simone ^a,b   Davies, Gareth R ^a   Wijbrans, Jan R ^a  

^a VU UNIVERSITY AMSTERDAM   (Netherlands)

^b UNIVERSITY OF FLORENCE   (Italy)

Author keywords

P T t paths; Pegmatites; Rifting processes; Southern Alps; Thermal evolution

Indexed keywords

FLUID INCLUSION; MESOZOIC; METAMORPHISM; P/T/T; PEGMATITE; RIFTING; TRIASSIC;

ITALY, ALPS, LAKE COMO;

EID: 0029751625     PISSN: 00129402     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (51)

1. ASSERETO, R. & CASATI, P. 1965: Revisione della stratigrafia permo-triassica della Val Camonica meridionale (Lombardia). Riv. ital. Paleont. Strat. 71, 999-1097.
2. BERNOULLI, D., BERTOTTI, G. & ZINGG, A. 1989: Northward thrusting of the Gonfolite Lombarda ("South-Alpine Molasse") onto the Mesozoic sequence of the Lombardian Alps: Implications for the deformation history of the Southern Alps. Ecl. Geol. Helv. 82, 841-856.
3. BERTOTTI, G. 1990: The deep structure of the Monte Generoso basin: an extensional basin in the South-Alpine Mesozoic passive continental margin. Mém. Soc. Géol. Fr. 156. Mém. Soc. Géol. Suisse 1, Mem. Soc. Geol. It. 1, 303-308.
4. _ 1991: Early Mesozoic extension and Alpine shortening in the western Southern Alps: the geology of the area between Lugano and Menaggio (Lombardy. Northern Italy) Mem Sc. Geol. (Padova) 43, 17-123.
5. BERTOTTI, G. & TER VOORDE, M. 1994: Thermal effects of normal faulting during rifted basin formation. 2: The Lugano-Val Grande normal fault and the role of pre-existing thermal anomalies. Tectonophysics 240, 145-157.
6. BERTOTTI, G., PICOTTI, V., BERNOULLI, D. & CASTELLARIN, A. 1993a: From rifting to drifting: Tectonic evolution of the South-Alpine upper crust from the Triassic to the Early Cretaceous. Sed. Geol. 86, 53-76.
7. BERTOTTI, G., SILETTO, G.B. & SPALLA, M.I. 1993b: Deformation and metamorphism associated with crustal rifting: the Permian to Liassic evolution of the Lake Lugano-Lake Como area (Southern Alps). Tectonophysics 226, 271-284.
8. BOCCHIO, R., CRESPI, R., LIBORIO, G. & MOTTANA, A. 1980: Variazioni composizionali delle miche chiare nel metamorfismo progrado degli scisti sudalpini dell'alto Lago di Como. Mem. Sc. Geol. (Padova) 34, 153-176.
9. BONIN, B. & 16 OTHERS 1993: Late Variscan magmatic evolution of the Alpine basement. In: Pre-Mesozoic geology in the Alps (Ed. by VON RAUMER, J.F. & NEUBAUER, F.), 171-201.
10. BORIANI, A., DAL PIAZ, G.V., HUNZIKER, J.C. VON RAUMER, J. & SASSI, F.P. 1974: Caratteri. distribuzione ed età del metamorfismo prealpino nelle Alpi. Mem. Soc. geol. ital. 13 suppl. 1, 165-225.
11. BRACK, P & RIEBER, H. 1993: Towards a better definition of the Anisian/Ladinian boundary: new biostratigraphic data and correlations of boundary sections from the Southern Alps. Ecl. Geol. Helv. 86, 415-528.
12. BRUSCA, C., GAETANI, M., JADOUL, F. & VIEL, G. 1981: Paleogeografia ladinico-carnica e metallogenesi del Sudalpino. Mem. Soc. geol. ital. 22, 65-82.
13. CASSINIS, G. AND 13 OTHERS 1986: Report on a structural and sedimentological analysis in the uranium province of the Orobic Alps, Italy. Uranium 2, 241-260.
14. CERNY, P. 1982: Petrogenesis of granitic pegmatites. In: Short course in granitic pegmatites in science and industry (Ed. by CERNY, P.). Min. Ass. Canada, 405-450.
15. DIELLA, V., SPALLA, M.I. & TUNESI, A. 1992: Contrasting thermomechanical evolutions in the Southalpine metamorphic basement of the Orobic Alps (Central Alps, Italy). J. metam. Geol. 10, 203-219.
16. DOGLIONI, C. & BOSELLINI, A. 1989: Eoalpine and mesoalpine tectonics in the Southern Alps. Geol. Rdsch 76, 735-754.
17. DODSON, M.H. 1979: Theory of cooling ages. In: Lectures in isotope geology (Ed. by JAEGER, E. & HUNZIKER, J.C.), 194-202.
18. ECHTLER, H.O. & MALAVIEILLE, J. 1990: Extensional tectonics, basement uplift and Stephano-Permian collapse basin in a late Variscan metamorphic core complex (Montagne Noire, Southern Massif Centrale). Tectonophysics 177, 125-138.
19. EISBACHER, G.H., LÜSCHEN, E. & WICKERT, F. 1989: Crustal-scale thrusting and extension in the Hercynian Schwarzwald and Vosges, Central Europe. Tectonics 8, 1-21.
20. EL TAHLAWI, M.R. 1965: Geologie und Petrographie des Nordöstlichen Comerseegebietes (Provinz Como, Italien). PhD Thesis, ETH Zürich.
21. FERRARA, G. & INNOCENTI, F. 1974: Radiometrie age evidence of a Triassic thermal event in the Southern Alps. Geol. Rdsch. 63, 572-581.
22. FUMASOLI, M.W. 1974: Geologie des Gebietes nördlich und südlich der Jorio-Tonale Linie im Westen von Gravedona (Como, Italia). PhD Thesis. ETH Zürich.
23. GAETANI, M., GIANOTTI, R., JADOUL, F., CIARAPICA, G., CIRILLI, S., LUALDI, A., PASSERI, L., PELLEGRINI, M. & TANNOIA, G. 1986: Carbonifero superiore, Permiano e Triassico nell'area lariana. Mem. Soc. geol. ital. 32, 5-48.
24. GAWEN, G.R.T., ROGERS, G., FALLICK, A.E. & FARROW, C.M. 1995: Rb-Sr closure temperatures in bi-mineralic rocks: a mode effect and test for different diffusion models. Chem. Geol. 122, 227-240.
25. GEBAUER, D. 1993: The pre-Alpine evolution of the continental crust of the Central Alps - An overview. In: Pre-Mesozoic geology in the Alps (Ed. by VON RAUMER, J.F. & NEUBAUER, F.), 93-117.
26. GRADSTEIN, F.M., AGETRBERG, F.P., OGG, J.G., HARDENBOL, J., VAN VEEN, P., THIERRY, J. & HUANG, Z. 1994: A Mesozoic time scale. J. Geophys. Res. 99, 24.051-24.074.
27. GREGNANIN, A. & PICCIRILLO, A.M. 1972: Litostratigrafia, tettonica e petrologia negli scisti austridici di alta e bassa pressione dell'aresa Passiria-Venosta (Alto Adige). Mem. Ist. Geol. Min. Univ. Padova 28, 2-55.
28. HANSON, G.N., Et. TAHLAWI, M.R. & WEBFR, W. 1966: K-Ar and Rb-Sr ages of pegmatites in the south central Alps. Earth Planet. Sc. Lett. 1, 407-413.
29. HOLDAWAY, J.M. 1971: Stability of andalusite and the aluminum silicate phase diagram. Am. J. Sc. 271, 97-131.
30. 2O fluids for use in hydrothermal experimentation: I. Experimental method and equilibrium calculations in the C-O-H-N system. Am Mineral. 59, 587-597.
31. JAHNS, R.H. 1982: Internal evolution of granitic pegmatites. In: Short course in granitic pegmatites in science and industry (Ed. by CERNY, P.). Mineral. Ass. Canada, 293-318.
32. JADOUL, F. & ROSSI, P.M. 1982: Evoluzione paleogeografico-strutturale e vulcanismo triassico nella Lombardia centro-occidentale. In: Guida alla geologia del Sudalpino centro-occidentale (Ed. by CASTELALRIN, A. & VAI, G.B.), Guide Geol. Reg. Soc. geol. ital., 143-155.
33. 2 in fluid inclusions: theoretical modelling and geological applications. PhD Thesis, Free University Amsterdam.
34. MALAVIEILLE, J. 1993: Late orogenic extension in mountain belts: Insights from the Basin and Range and the Late Paleozoic Variscan Belt. Tectonics 12, 1115-1130.
35. MOTTANA, A., NICOLETTI, M., PETRUCCIANI, C., LIBORIO, G., DE CAPITANI, L. & BOCCHIO, R. 1985: Pre-Alpine and Alpine evolution of the South Alpine basement of the Orobic Alps. Geol. Rdsch. 74, 353-366.
36. MOTTANA, A., CRESPI, R. & LIBORIO, G. 1990: The occurrence of three aluminosilicates at Corenno Plinio (Upper Lake Como region, Italy). Mem. Sc. Geol. (Padova) 42, 361-379.
37. MUNDIL, R., BRACK, P., MEIER, M. & OBERLI, F. 1995: Calibration of Triassic "Milankovitch cycles" by high resolution U-Pb age determination. Terra Nova 7 suppl. 1, 351.
38. PINARELLI, L., DEL MORO, A. & BORIANI, A. 1988: Rb-Sr geochronology of Lower Permian plutonism in Massiccio dei Laghi, Southern Alps (NW Italy). Rend. Soc. ital. Min. Petr. 43, 411-428.
39. REPOSSI, E. 1914: I filoni pegmatitici di Olgiasca. Atti Soc. ital. Sci. Nat. 52, 487-513.
40. ROEDDER, E. 1984: Fluid Inclusions. Reviews in mineralogy. Min. Soc. Am. 12.
41. SILETTO, G.B., SPALLA, M.I., TUNESI, A., NARDO, M. & SOLDO, L. 1990: Structural analyses in the Lario Basement (central Southern Alps, Italy). Mem. Soc. geol. ital. 45, 93-100.
42. SILETTO, G.B., SPALLA, M.I., TUNESI, A., LARDFAUX, J.M. & COLOMBO, A. 1993: Pre-Alpine structural and metamorphic histories in the Orobic Southern Alps, Italy. In: Pre-Mesozoic geology in the Alps (Ed. by VON RAUMER, J.F. & NEUBAUER, F.), 585-598.
43. STAHLE, V., FRENZEL, G., KOBER, B., MICHARD, A., PUCHELT, H. & SCHNEIDER, W. 1990: Zircon syenite pegmatite in the Finero peridotite (Ivrea zone): evidence for a syenite from a mantle source. Earth Plan. Sc. Lett. 101, 196-205.
44. 2 fluid inclusions: modelling for < 31°C and P < 400 bars. Eur J. Min. 6, 753-771.
45. 2O. Contr. Min. Petrol. 70, 429-438.
46. VON BLANCKENBURG, F., VILLA, I.M., BAUR, H., MORTEANI, G. & STEIGER, R.H. 1989: Time calibration of a PT-path from the Western Tauern Window. Eastern Alps: the problem of closure temperatures. Contr. Min. Petrol. 101, 1-11.
47. VOORDE, M. TER & BERTOTTI, G. 1994: Thermal effects of crustal normal faulting during rifted basin formation. 1: a finite difference model. Tectonophysics 240, 133-144.
48. WIJBRANS, J.R. & BERTOTTI, G. 1994: Thermal evolution of the South-Alpine crust: from Variscan cooling to Alpine overprinting. 8th Int. Conf. Geochronology, Cosmochronology and Isotope Geology, Berkeley, june 5-11. 1994, abstract volume, 353.
49. WILSON, M. 1993: Magmatism and geodynamics of basin formation. Tectonophysics 86, 5-29.
50. YARDLEY, B.W.D. 1977: The nature and significance of the mechanism of sillimanite growth in the Connemara Schists, Ireland. Contr. Min. Petrol. 65, 53-58.
51. ZIEGLER, P. 1988: Evolution of the Arctic-North Atlantic and the Western Tethys. Amer. Assoc. Petrol. Geol. Mem. 43, 1-197.