The geometry and evolution of a transpressional strike-slip system: the Carboneras fault, SE Spain

Journal of the Geological Society - Tập 152 Số 2 - Trang 339-351 - 1995
J. Keller1, S. Hall2, Chris Dart1, Ken McClay1
1Fault Dynamics Project, Department of Geology, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
2BP Exploration, Stockley Park, Uxbridge UBll IBP, UK

Tóm tắt

The Carboneras fault system is a 40 km long, 1 km wide Neogene NE-SW-trending left-lateral transpressional strike-slip fault system which is part of the Trans-Alboran shear zone in SE Spain. The Carboneras fault system is an anastomosing array of sub-vertical, individual fault planes or fault zones which surround pods or lenses of less intensely strained rocks. Displacements along the individual fault planes exhibit reverse components of slips and form positive flower structures. Faults have either sharp boundaries or wider bands of gouge, typically a few metres thick and are hundreds of metres in length. Second-order fault splays are well developed and usually exhibit P-shear rather than Riedel-shear orientations. These are interpreted to be related to the transpressional displacement and may also characterize other oblique convergent zones elsewhere. The second-order faults are interpreted to have formed as shear strain increased along the first-order fault and was transferred laterally to branch segments. This process produced pods, or shear lenses, bounded by the fault segments. The length to width aspect ratios of the shear lenses were found to be scale-independent across five orders of magnitude with the most common values between 3:l and 6:l. A model is proposed for the development of the fault zone by incremental finite displacements along the segmented fault surfaces. This model is based on field evidence that displacement switched with time from one fault strand to another.

Từ khóa


Tài liệu tham khảo

Baena J., Fernandez Vargas E., García RodriCuez J. J., Greene H. G.Active faulting in coastal Almería (SE Spain) and adjacent continental shelfSeminários de Tectónica Global, Fundación Gómez Pardo1977Madrid116

10.1016/0040-1951(91)90062-W

10.2113/gssgfbull.S7-XXV.2.205

Bousquet J. C., Biju-Duval B., Montadert L.Contribution à I'étude de la tectonique récente en Méditerrante occidentale. Les données de la Néotectonique dans I'are de Gibraltar et dans I'are TyrrhénienInternational symposium on the structural history of the Mediterranean basins1977YugoslaviaSplit199214

10.1016/0040-1951(79)90232-4

Bousquet J. C., Dumas B., Montenat C.Le décrochement de Palomares: décrochement sénèstre du basin de Vera (Cordillères bétique orientales, Espagne)Cuadernos Géológicos19756113119

Di Battistini G., Toscani L., Iaccarino S., Villa I.M.K/Ar ages and the geological setting of calc-alkaline volcanic rocks from Sierra de Gata, SE SpainNeues Jahrbuch fir Mineralogie Mitteilungen19878369383

Dupuy de Löme E.Nota acerca de la industria petrolifera rumana y aplicación de sus datos geológicos a la investigación de algunos yacimentos petrolíferos españolesBolletin del Instituto Geológico y Minero de España193353139217

Fallot P.Les Cordillbres bdtiquesEstudios Gtolbgicos1948883172

Fournier M. 1980 Le bassin de Níjar-Carboneras (Cordillères bétiques) Néotectonique: Étude des Diaclases. Phd Thesis Université Paris VII

García-Hernádez M., Lopez-Garrido A.C., Rivas P., Sanz de Galdeano C., Vera J.A.Mesozoic palaeogeographic evolution of the external zones of the Betic CordillerasGeologie en Mijnbouw198059155168

Hall S. H. 1983 Post alpine tectonic evolution of S.E. Souin and the structure of fault gouges PhD Thesis Imperial College University of London

Hermes J.J.The stratigraphy of the Subbetic and southern Prebetic of the Vélez Rubio-Caravaca area and its bearing on transcurrent faulting in the Betic Cordilleras of southern SpainProceedings Koninklijke Nederlands Akademie Wetenschapplijke1978814172

10.2113/gssgfbull.III.2.257

I.G.M.E. 1975 El Hydrogeología del Campo de Míjar Instituto Geológico y Minero de España

10.1016/0040-1951(88)90028-5

10.1029/92TC02507

10.1016/0191-8141(90)90093-E

Montenat C., Masse P., Coppier G., Ott D'estevou P.The sequence of deformations in the Betic Shear Zone (SE Spain)Annales Tectonicre1990a496103

Montenat C., Ott D'estevou P., Masse P.Tectonic-sedimentary characters of the Betic Neogene basins evolving in a crustal transcurrent shear zone (SE Spain)Bulletin des Centres de Récherche de Exploration-Production Elf Aquitaine198711122

Montenat C., Ott D'estevou P., Rodríguez Fernádez J., Sanz de Galdeano C., Augustí J., Domènech R., Julià A., Martinell J.Geodynamic evolution of the Betic Neogene intramontane basinsIberian Neogene Basins, Paleontogia i Euoluciò1990b2659

10.1130/0016-7606(1991)103<0762:CGOTSA>2.3.CO;2

10.1016/0191-8141(86)90022-2

Ott d'Estevou P., Montenat C.Evolution structurale de la zone bétique orientale (Espagne) du Tortonien à I'HolocèneComptes Rendus de I'Académie des Sciences, Paris1985300363368

10.1130/0091-7613(1982)10<97:EOAFBO>2.0.CO;2

10.1130/0091-7613(1989)017<0540:ECOTCL>2.3.CO;2

Rodgers D.A., Balance P.F., Reading H.G.Analysis of basin development produced by en echelon strike-slip faultsSedimentation in oblique-slip mobile zones198042741International Association of Sedimentologists Special Publication

10.1007/BF00875717

10.1016/0191-8141(88)90097-1

Tapia Garrido J. A.Los Baños de Sierra Alhamilla1980AlmeríaCajal

10.1130/0016-7606(1970)81[1625:SBSZOD]2.0.CO;2

10.2475/ajs.279.1.19

10.1016/0040-1951(76)90121-9

10.1016/0191-8141(87)90022-8

10.1016/0012-8252(91)90019-C

Wilcox R.E., Harding T.P., Seely D.R.Basic wrench tectonicsAmerican Association of Petroleum Geologists Bulletin1973577496

10.1016/0191-8141(86)90021-0

Thông tin
Thông tin xuất bản

Journal of the Geological Society

Tập 152 Số 2

339-351

Thông tin tác giả