Page 16 - Ragg_et_al-1999-Tectonics
P. 16

684 RAGG ET AL.: TECTONIC STRESS IN SICILY

    AcknowledgmentsT. he work wasfundedby a CNR-GNDT grant supporctonnectewdithBirgitMiiller.SpeciatlhanksaregiventoCorpo
(96.02955.P.F.54c) onnectedwith M. Grasso.We thankthe Deutsche delleMiniere,SezioneIdrocarburPi,alermow, hoprovidedthedataand
Forschungsgemeinschawfht,o funded this work as part of the C.-D.Reuthear ndJ.Adamforfruitfuldiscussiodnuringthepreparation
collaborativeresearchcenter SFB 108 (SFB publication425) at the of the paper.A. Amato, S. Bell, G. Spadini,J.-M. Daniel, and an
GeophysicInasl titut(epublicatio6n73)of theUniversitoyf Karlsruhe. anonymourseviewerarethankedfor theconstructivceriticismto early
We thanktheHeidelbergAcademyof ScienceasndHumanitiefsorthe versionsof themanuscript.

References

Adam, J., and C. D. Reuther, Dynamics of                   relationshipwith mainland structures,Boll. Soc.       and C. Monaco, Carta geologica della Sicilia
                                                            Geol. ltal., 104, 207-215, 1985.                      centro-orientale, map scale 1:50,000, Societh
     neotectonic foreland basin deformation and                                                                  ElaborazioniCartografiche,Florence,1990.
                                                       Catalano, R., S. Infuso, and A. Sulli, The            Liischen, E., et al.. A seismic reflection-refraction
inversion (Central Mediterranean Thrust Belt,
                                                           submerged Maghrebian Sicilian Chain from               experiment across the exposed lower crust in
    Sicily), Z. Dtsch.Geol. Ges., 146, 1-15, 1995.         southernTyrrhenian to the Pelagian foreland:          Calabria(southernItaly), Terra Nova, 4, 77-86,
Amato, A., R. Azzara, A. Basili, C. Chiarabba, M.          Tectonic history, Terra Nova, 7, 179-188,
                                                                                                                   1992.
Cocco, M. Di Bona, and G. Selvaggi, Main                     1995.
                                                                                                             Mardia, K. V., Statistics of Directional Data:
shock and aftershock of the December 13, 1990,         Cogan, J., L. Rigo, M. Grasso, and I. Lerche,             Probability and Mathematical Statistics, 357
                                                           Flexural tectonics of southeastern Sicily, J.         pp., Academic,San Diego, Calif., 1972.
EasternSicily earthquakeA, nn. Geophys.3, 8(2),            Geodyn., 11, 189-241, 1989.
                                                                                                             Monaco, C., S. Mazzoli, and L. Tortorici, Active
255-266, 1995.                                         Farrugia, P., I. Apopei, and K. P. Bonjer,
                                                           Observations on the seismicity of the Sicily          thrust tectonics in western Sicily (southern
Anderson,H., and J. Jackson,The deep seismicity             channel, Mem. Soc. Geol. ltal., 38, 329-340,         Italy): The 1968 Belice earthquakesequence.
                                                                                                                  Terra Nova, 8, 372-381, 1996
of the Tyrrhenian Sea, Geophys. J. R. Astron.                1989.
                                                                                                             Miiller, B., Tectonic stressin Europe: Borehole
Soc., 91, 613-637, 1987.                               Gardiner, W., M. Grasso, and D. Sedgeley, Plio-           guided waves affected by stress induced
                                                                                                                  anisotropy, Ph.D. Thesis, Univ. Karlsruhe,
Antonelli, M., R. Franciosi, G. Pezzi, Querci, G., G.        Pleistocene fault movement as evidence for           Karlsruhe,Germany, 1995.

P. Ronco, and F. Vezzani, Paleogeographic                  mega-blockkinematicswithin the Hyblean Malta      Miiller, B., M.L. Zoback, K. Fuchs, L. Mastin, S.
                                                           Plateau,central Mediterranean,J. Geodyn.,19,
evolution and structural setting of the northern            35-51, 1995.                                         GregersenN, . Pavoni, O. Stephanssona,nd C.
                                                                                                                 Ljunggren,Regionalpatternsof tectonicstress
side of Sicily Channel,Mem. Soc. Geol. ltal.,          Geiss, E., A new compilation of crustal thickness         in Europe,J. Geophys.Res., 97, 11783-11803,
41, 141-157, 1992.                                         datafor the Mediterraneanarea,Ann. Geophys.,
                                                            Ser. B, 5, 623-630, 1987.                              1992.
Argnani,A., S. Cornini,L. Torelli and N. Zitellini,
                                                       Ghisetti, F., and L. Vezzani, Contribution of         Patacca, E., P. Scandone, G. Giunta, and V.
Diachronousforedeep-systemin the Neogene-
                                                            structural analysis to understanding the             Liguori, Mesozoic paleotectonic evolution of
Quaternaryof the Strait of Sicily, Mem. Soc.                geodynamic evolution of the Calabrian Arc, J.        the Ragusa zone (southeasternSicily), Geol.
                                                            Struct. Geol., 3(4), 371-381, 1981.                   Rom., 18, 331-369, 1979.
Geol. ltal., 38, 407-417, 1989.                        Grasso,M., and Z. Ben-Avraham,Magnetic study
                                                            of the northernmargin of the Hyblean Plateau,    Pedley, H. M., and M. Grasso,Sea-level change
Baumann, H., and C. D. Reuther, In-situ stress:            SoutheasternSicily: structuralimplication,Ann.         around the margins of the Catania - Gela
                                                            Tecton., 6, 202-213, 1992.                           Throughand Hyblean Plateau,southeasSt icily
Pantelleria Rift (central Mediterranean), Terra                                                                  (African - Europeanplate convergencezone):A
                                                       Grasso,M., and C. D. Reuther,The westernmargin            problemof Plio - Quaternaryplate buyoancy?
Cognita, 5(1), 84, 1985.                                   of the Hyblean Plateau: A neotectonictransform        Spec. Publ. lnt. Assoc. Sedimentol., 12, 451-
                                                            system on the SE Sicilian foreland, Ann.              464, 1991.
Beekman, F., Tectonic modelling of thick-skinned            Tecton., 2, 107-120, 1988.
                                                                                                             Pedley,H. M., andM. Grasso,Miocenesyntectonic
compressional intraplate deformation, Ph.D.            Grasso, M., C. D. Reuther, H. Baumann, and A.             sedimentatioanlongthe westernmarginsof the
                                                            Becker, Shallow crustal stress and neotectonic       Hyblean-MaltPalatformA: guideto platemargin
thesis,152 pp., Vrije Univ., Amsterdam,1994.                framework of the Malta Platform and the               processes in the Central Mediterranean, J.
                                                                                                                 Geodyn.,15, 19-37, 1992.
Bell, J.S., and D. I. Gough, Northeast-southwest            Southeastern Pantelleria Rift (Central
                                                            Mediterranean), Geol. Rom., 25, 191-212, 1986.   Plumb, R.A., and S.H. Hickman, Stress induced
compressivestress in Alberta: Evidence from            Grasso, M., A. De Dominicis, and G. Mazzoldi,
                                                           Structuresand tectonic setting of the western         boreholeelongationA: comparisonbetweenthe
oilwells, Earth Planet. Sci. Lett., 45, 475-482,           margin of the Hyblean-Malta shelf (central            four-armdipmeterandthe boreholeteleviewerin
                                                            Mediterranean), Ann. Tecton., 4,140-154, 1990.       the Auburn geothermalwell, J. Geophs.Res.,
1979.                                                  Grasso, M., C. D. Reuther, and L. Tortorici,               90, 5513-5521, 1985.
                                                           Neotectonic deformations in SE Sicily: The
Ben-Avraham, Z. and Grasso M., Collisional zone            Ispica Fault, evidence of Late Miocene-           Pondrelli, S., A. Morelli, and E. Boschi, Seismic
                                                           Pleistocene decoupled wrenching within the             deformation in the Mediterranean area estimated
segmentationin Sicily and surroundingareasin               centralMediterraneanstressregime,J. Geodyn.,
                                                            16, 135-146, 1992.                                   by momenttensorsummationG, eophysJ. . Int.,
the Central Mediterranean, Ann Tect. ,4, 131-          Grasso, M., G. Miuccio, R. Maniscalco R., P.               122, 938-952, 1995.
                                                            Garofalo, F. La Manna, and R. Stamilla, Plio-
139, 1990.                                                  Pleistocene structural evolution of the western  Rebai, S., H. Philip, and A. Taboada, Modern
                                                                                                                 tectonicstressfield in the Mediterranearnegion:
Ben-Avraham, Z., M. Boccaletti, G. Cello, M.               margin of the Hyblean Plateau and the                  Evidence for variation in stress directions at
                                                           Maghrebianforedeep at the Gela Nappe, SE-
Grasso, F. Lentini, L. Torelli, and L. Tortorici,          Sicily, Terra Nova, 7, 14, 1995.                      differentscales,GeophysJ. . lnt., 110, 106-140,
                                                       Jongsma,D., J.M. Woodside, G.C.P. King, and
Principali domini strutturali originatisi dalla            J.E. Van Hinte, The Medina Wrench: A key to             1992.

collisione neogenico-quaternaria  nel                       the kinematics of the central and eastern        Reuther, C. D., and G. H. Eisbacher, Pantelleria
                                                                                                                 Rift: Crustael xtensionin a convergenint traplate
Mediterraneo centrale, Mem. Soc. Geol. ltal., 45,          mediterraneanover the past5 Ma, Earth Planet.         setting, Geol. Runtisch., 74, 585-597, 1985.
                                                           Sci. Lett., 82, 87-106, 1985.
453-462, 1990.                                                                                               Reuther, C. D., Z. Ben-Avraham, and M. Grasso,
                                                       Kohnke, P., ANSYS engineeringanalysissystem,              Origin and role of major strike-sliptransfers
Ben-Avraham, Z., V. Lyakhovsky, and M. Grasso,             theoretical manual, Swanson Anal. Syst. Inc.,         during plate collision in the Central
                                                            Housten, Pa., 1987.                                  Mediterranean, Terra Nova, 5, 249-257, 1993.
Simulationof collision zone segmentationin the
                                                       Landolt-Boernstein,Physical Properties of Rock,       RichardsonR, .M., S.C. Solomon,and N.H. Sleep,
central Mediterranean,Tectonophysics2,43, 57-              Springer,New York, 1982.                              Tectonicstressin the plates,Rev. Geophys.,17,

68, 1995.                                              Lentini, F., I. Di Geronimo, M. Grasso, S. Carbone,       981-1019, 1979.
                                                           F. Sciuto, G. Scamarda,G. Cugno, S. Iozzia,
Bianchi, F., S. Carbone, M. Grasso, G. Invernizzi,         and M. Romeo,Carta geologica della Sicilia        Riuscetti, M., and R. Schick, Earthquakesand
                                                                                                                 tectonicsin SouthernItaly, Boll. Geofis. Teor.
F. Lentini, G. Longaretti, S. Merlini, and F.              sud-orientale, map scale 1:100,000, Societh           Appl., 17, 59-78, 1973.
                                                           ElaborazionCi artograficheF,lorence,1984.
Mostardini, Sicilia Orientale: profilo geologico       Lentini, F., M. Grasso,S. Carbone,S. Catalano,        Schmincke,H.-U., B. Behncke, M. Grasso and S.
                                                                                                                 Raffi, Evolution of the northwestern Iblean
Nebrodi-Iblei, Mem. Soc. Geol. ltal., 38, 429-
                                                                                                                 Mountains,Sicily: Uplift, Pliocene/Pleistocene
458, 1989.                                                                                                       sea-level changes, paleoenvironment, and
                                                                                                                 volcanism, Geol. Runtisch., 86, 637-669, 1997.
Bousquet J.-C., Lanzafame G. and Paquin C.,

     Tectonic stress and volcanism: In-situ stress

    measurementsand neotectonicinvestigationsin
    the Etna area (Italy), Tectonophysics1, 49, 219-
     231, 1988.

Bousquet,J.-C., S. Gresta, G. Lanzafame, and C.
    Paquin,I1 campodegli sforzi attuali e quaternari
    nella regione dell Etna, Mere. Soc. Geol. ltal.,
     38, 483-506, 1989.

Butler, R. W. H., M. Grasso, and F. La Manna,

    Origin and deformationof the Neogene-Recent
    Maghrebian foredeep at the Gela Nappe, SE
    Sicily, J. Geol. Soc. London, 149, 547-566,

     1992.

Caccamo, D., G. Neri, A. Sarao, and M. Wyss,
    Estimates of stress directions by inversion of
    earthquake fault-plane solutions in Sicily,
    Geophys.J. lnt., 125, 857-868, 1996.

Catalano, R., B. D'Argenio, L. Montanari, E.
    Morlotti, and L. Torelli, Marine geology of the
    NW Sicily offshore (Sardinia Channel) and its
   11   12   13   14   15   16   17