Summary
Soft-sediment deformation structures in Tortonian turbiditic deposits of the Guadix Basin (southern Spain) have been described. The most common structures are asymmetrical pillow structures and elongated sets of loadcasts. The structures are metric in scale and have been interpreted as the result of liquefaction and/or fluidization processes triggered by the rapid sedimentation of single high concentration turbidites.
Final morphology of soft-sediment deformation structures is related to two main driving force systems: unstable density gradient and lateral shear stress. The latter is probably induced by the downslope component of the sediment weight. The asymmetry of deformational structures (in horizontal and vertical cross-section) allows a clarification of the relationship between morphology of deformation and direction of lateral shear stress: this relationship seems ambiguous and confused in the literature. The interpretations both of deformation mechanism and trigger agent have been supported with:-field analyses;-calculations on the liquefaction processes induced by rapid sedimentation;-qualitative models in laboratory.
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References
Allen, J.R.L. (1977): The possible mechanics of convolute lamination in graded sand beds.—Journ. Geol. Soc. London134, 19–31
— (1982): Sedimentary structures: their character and physical basis.—vol. II, 663 pp., New York (Elsevier)
— (1985): Experiments in physical sedimentology, 63 pp., London (Allen and Unwin)
Allen, J.R.L. and Banks, N.L. (1986): An interpretation and analysis of recumbent-folded deformed cross-bedding.—Sedimentology,19, 257–283
Anketell, J.M., Cegla, J. and Dzulynski, S. (1970): On the deformational structures in systems with reversed density gradients.—Annal. de la Soc. Géol. de Pologne (1)40, 3–30
Anketell, J.M. and Dzulynski, S. (1968): Transverse deformational patterns in unstable sediments.—Annal. de la Soc. Géol. de Pologne,38, 411–416
Brenchley, P.J. and Newall, G. (1977): The significance of contorted bedding in Upper ordovician sediments of the Oslo region, Norway.—Journ. of Sedim. Petrol.,47, 819–833
Collinson, J.D. (1994): Sedimentary deformation structures.—In: Maltman, A. (ed.), The Geological deformation of sediments. —362 pp., London (Chapman and Hall)
Collinson, J.D. and Thompson, D.B. (1989): Sedimentary structures, II ed., 194 pp., London (Allen and Unwin)
Dasgupta, P. (1998): Recumbent flame structures in the Lower Gondawa rocks of the Jharia Basin, India—a plausible origin. —Sedim. Geol.,119, 253–261
Dzulynski, S. and Simpson, F. (1966): Experiments on interfacial current markings.—Geol. Rom.,5, 197–214
Dzulynski, S. and Walton, E.K. (1965): Sedimentary Features of Flysch and Greywackes.—274 pp. Amsterdam (Elsevier)
Fernández, J., Soria, J.M. and Viseras, C. (1996): Stratigraphic architecture of the Neogene basis in the central sector of the Betic Cordillera (Spain): tectonic control and base level changes. —In: Friend P.F. and Dabrio C.J. (eds.): Tertiary Basin of Spain: the stratigraphic record of crustal kinematics.—353–365, Cambridge (University Press)
Fisher, W.L. and Mcgowen, J.H. (1967): Depositional systems in the Wilcox Group of Texas and their relationship to ocurrence of oil and gas.—Gulf Coast Assoc. Geol. Transation,7, 105–125
Guy, M. (1992): Facies analysis of the Kopervik sand interval, Kilda Filed, Block 16/26, U. K. North Sea.—In: Hardman, R.F.P. (ed.): Exploration Britain: Geological Insights for the Next Decade.—Spec. Publ. Geol. Soc. London,67, 187–220
Hamilton, E.L. (1976): Variations of density and porosity with depth in deep-sea sediments.—Journ. of Sedim. Petrol.,46, 280–300
Hein, F.J. (1982): Depositional mechanisms of deep sea coarse clastic sediments, Cap Enrage Formation.—Can. J. Earth Sci.,19, 276–287
Howard, J.D. and Lohrengel, C.F. (1969): Large non-tectonic deformational structures from upper cretaceous rocks of Utah. —Journ. of Sedim. Petrol.,39, 1032–1039
Johnson, H.D. (1977): Sedimentation and water escape structures in some late Precambrian shallow marine sandstones from Finmark, North Norway.—Sedimentology,24, 389–411
Leppard, R.K. (1978): Convolute laminations in the turbidites of the Aberystwyth Grits.—Journ. Geol. Soc. London,135, 248–253
Lowe, D.R. (1975): Water escape structures in coarse-grained sediments.—Sedimentology,31, 749–745
Macar, P. (1948): Les pseudonodules du Fiammen et leur origine. —Annal. Soc. Géol. de Belgique,72, 47–74
— (1951): Pseudo-nodules et terrains meubles.—Annal. Soc. Géol. de Belgique,75, 111–117
Maltman, A. (1994): The Geological deformation of sediments. 362 pp., London (Chapman and Hall)
Mcbride, E.F., Millikan, K.L., Cavazza, W., Cibin, U., Fontana D., Picard, M.D. and Zuffa, G.G. (1995): Heterogeneous distribution of calcite cement at the outcrop scale in tertiary sandstones, Northern Apennines, Italy.—Amer. Assoc. Petrol. Bull.,79, 1044–1063
Middleton, G.V. and Hampton, M.A. (1973): Sediment gravity flows: Mechanics of flow and deposition.—Soc. of Econ. Paleontol. and Mineral., Short Course, 38 pp.
Mills, P.C. (1983): Genesis and diagnostic value of soft sediment deformation structures—a review.—Sedim. Geol.,35, 83–103
Mitchum, R.M. Jr., Vail, P.J. and Thompson, S. (1977): Seismic stratigraphy and global changes of sea level. Part 2: The Depositional Sequence as a basic unit for Stratigraphic Analysis. In: Payton C.E. (ed.): Seismic Stratigraphy.—Amer. Assoc. Petrol. Geol., Memoir,26, 53–62
Montenat, C. (1980): Relation entre déformations synsédimentaires et paléoséismicité dans le Messiniène de San Miguel de Salinas (Cordillères bétiques orientales, Espagne).—Bull. de la Soc. Géol. de France,7, 501–509
Moretti, M. (1997): Le strutture sedimentarie deformative. Studio delle modalità di deformazione e dell'origine attraverso esempi fossili e modellizzazione in laboratorio.—unpublished Ph.D. Thesis, University of Bari, 232 pp.
Moretti, M. and Tropeano, M. (1996): Strutture sedimentarie deformative (sismiti) nei depositi tirreniani di Bari.—Mem. Soc. Geol. It.,51, 485–500
Moretti, M., Alfaro, P., Caselles, O. and Canas, J.A. (1999): Modelling seismites with a digital shaking table.—Tectonophysics,304, 369–383
Owen, G. (1985): Mechanism and controls of deformation in unconsolidated sands: an experimental approach.—unpublished Ph.D. Thesis, University of Reading, 2 vols., 674 pp.
Owen, G. (1987): Deformation processes in unconsolidated sands.—In: Jones M.E. and Preston R.M.F. (eds.): Deformation of Sediments and Sedimentary Rocks.—Geol. Soc. Spec. Public.,29, 11–24
— (1996): Experimental soft-sediment deformation: structures formed by the liquefaction of unconsolidated sands and some ancient examples.—Sedimentology,43, 279–293
Pettijohn, F.J. and Potter, P.E. (1964): Atlas and glossary of primary sedimentary structures.—370 pp., Berlin (Springer)
Potter, P.E. and Pettijohn, F.J. (1977): Paleocurrents and Basin Analysis.—425 pp., Berlin (Springer)
Prentice, J.E. (1956): The interpretation of flow-markings and load-casts.—Geol. Mag.,93, 393–400
Ricci Lucchi, F. (1968): Channelized deposits in the middle Miocene flysch of Romagna (Italy).—Giorn. di Geol.,36, 203–282
Rascoe, B. Jr. (1975): Tectonic origin of preconsolidation deformation in Upper Pennsylvanian rocks near Bartlesville, Oklahoma. —Amer. Assoc. Petrol. Geol., Bull.,59, 1626–1638
Sanders, J.E. (1956): Oriented phenomena produced by sedimentation from turbidity currents and in subaqueous slope deposits. —Journ. of Sedim. Petrol.,26, 178–179
Sanders, J.E. (1965): Primary sedimentary structures formed by turbidity currents and related resedimentation mechanisms. In: G. V. Middleton (ed.): Primary sedimentary structures and their hydrodynamic interpretation.—Soc. Econ. Paleont. Mineral. Spec. Publ.,12, 192–219
Selker, J.S. (1993): Expressions for the formation of load casts in soft sediments.—Journ. of Sedim. Petrol.,63, 1149–1151
Shrock, R.R. (1948): Sequence in layered rocks. First edition.—320 pp. (McGraw Book Company)
Sorauf J.E. (1965): Flow rolls of Upper Devonian rocks of South-Central New York State.—Journ. of Sedim. Petrol.,35, 553–563
Soria, J.M. (1993): La sedimentación neógena entre Sierra Arana y el Rio Guadiana Menor (Cordillera Betica Central). Evolución desde un margen continental hasta una cuenca intramontañosa. —Unpublished Ph. D. Thesis, University of Granada, 292 pp.
— (1994): Evolución sedimentaria y paleogeografica durante el Mioceno superior en el borde Norte de la Cuenca de Guadix, Cordillera Betica Central.—Estud. Geol.,50, 59–69
Soria, J.M., Viseras, C. and Fernández, J. (1998): Late Miocene-Pleistocene tectono-sedimentary evolution and subsidence of the central Betic Cordillera (Spain): a case study in the Guadix intramontane basin.—Geol. Mag.,135, 565–574
Stromberg, S.G. and Bluck, B. (1998): Turbidite facies, fluid-escape structures and mechanisms of emplacement of the Oligo-Miocene Aljibe Flysch, Gibraltar Arc, Betics, southern Sapin.—Sedim. Geol.,115, 267–288
Sullwold, H.H. Jr. (1959): Nomenclature of load deformation in turbidites.—Geol. Soc. Amer., Bull.,70, 1247–1248
Ten Haaf, E. (1956): Significance of convolute lamination.—Geol. en Mijnbouw,18, 188–194
Terzaghi, K. (1947): Shear characteristics of quick-sands and soft clay.—Proc. 7th Texas Conf. Soil Mech. and Found. Engin., 41 pp.
Van Loon, A.J. (1992): The recognition of soft-sediment deformations as early-diagenetic features—A literature review. In: Diagenesis III: Developments in Sedimentology,47, 135–189, Amsterdam (Elsevier)
Van Loon, A.J. and Brodzikowski, K. (1987): Problems and progress in the research on soft-sediment deformations.— Sedim. Geol.,50, 167–193
Weaver, J.D. (1976): Seismically-induced load structures in the Basal Coal Measures, South Wales.—Geol. Mag.,113, 535–543
Weaver, J.D. and Jeffcoat, R.E. (1976): Carbonate ball and pillow structures.—Geol. Mag.,115, 245–253
Williams, P.F. (1969): Notes on some deformation structures of sedimentary origin in the Little Haven-Amroth coalfield, Pembrokeshire.—Geol. Mag.,106, 395–411.
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Moretti, M., Soria, J.M., Alfaro, P. et al. Asymmetrical soft-sediment deformation structures triggered by rapid sedimentation in turbiditic deposits (Late Miocene, Guadix Basin, southern Spain). Facies 44, 283–294 (2001). https://doi.org/10.1007/BF02668179
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DOI: https://doi.org/10.1007/BF02668179