Earthquake-induced deformational structures in young lacustrine sediments, East Anatolian Fault, southeast Turkey

Hempton, Mark R.; Dewey, John

doi:10.1016/0040-1951(83)90294-9

Cited by 163 publications

(109 citation statements)

References 14 publications

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“…Several studies have attempted to extract genetic information from seismically induced soft-sediment deformation structures concerning the magnitude, epicentral location, frequency and inter vals of past earthquakes (e.g., Sims, 1975;Hempton and Dewey, 1983;Allen, 1986;Audemard and De Santis, 1991;Cojan and Thiry, 1992;Guiraud and Plaziat, 1993;Obermeier et al, 1993;Marco and Agnon, 1995;Jones and Omoto, 2000;Moretti, 2000;Rodrtguez-Pascua et al, 2000).…”

Section: Earthquake Characterizationmentioning

confidence: 99%

Earthquake-induced soft-sediment deformation structures in Upper Jurassic open-marine microbialites (Neuquén Basin, Argentina)

Martı́n-Chivelet

Palma

López-Gómez

et al. 2011

Sedimentary Geology

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Keywords:Soft-sediment deformation Seismites carbonate rocks Tithonian Back-arc basinThe soft-sediment deformation structures were generated in finely laminated, partially consolidated, organic rich, carbonate microbialites that were deposited in open-marine, poorly oxygenated settings, apparently devoid of any significant slope. Those structures include boudins of different sizes and complexity, a variety of folds, normal (listric) dm-scale faults, sub-horizontal detachment surfaces and other features, which are part of several larger-scale, complex slump structures. Deformation was dominantly plastic but near to the ductile-brittle field transition. AndesOn the basis of the observed soft -deformation structures, their geographic distribution, their lateral homogeneity, and the geodynamic framework ofthe basin in which it was generated, the Amarillas bed can be tentatively attributed to a large, intermediate-depth earthquake that occurred within the plate that subducted beneath the Andean continental margin and the Neuquen back-arc basin.

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Section: Earthquake Characterizationmentioning

confidence: 99%

Earthquake-induced soft-sediment deformation structures in Upper Jurassic open-marine microbialites (Neuquén Basin, Argentina)

Martı́n-Chivelet

Palma

López-Gómez

et al. 2011

Sedimentary Geology

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“…During the last three decades, many researchers (e.g. Berberian and Arshadi, 1976;Hempton and Dewey, 1983;Berberian, 1997;Cisternas and Philip, 1997;Avagian, 2001;Karakhanian et al, 2002;Jackson et al, 2002;Hessami et al, 2003a;Karakhanian et al, 2004;Davtian, 2007;Solaymani Azad, 2009) have performed active tectonic and paleoseismological studies to improve the seismic hazard assessment within this intra-plate region. The occurrence of strong earthquakes, long quiescent times, and intensely active periods (temporal seismic clustering) are the main characteristics of this active region.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Paleoseismological and morphological evidence of slip rate variations along the North Tabriz fault (NW Iran)

et al. 2015

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“…Seismites are strata interpreted as having been deformed by earthquakes (Seilacher, 1969(Seilacher, , 1984 and are therefore important as indicators of past seismic activity (Sims, 1973(Sims, , 1975Hempton & Dewey, 1983;Ringrose, 1989;Obermeier, 1996). The main process driving deformation is liquefaction, the temporary transformation of granular material from a solid to a liquid state following an increase in pore water pressure and reduction in effective stress.…”

Section: Introductionmentioning

confidence: 99%

Evidence for Late Messinian seismites, Nijar Basin, south‐east Spain

Fortuin¹,

Dabrio

2008

Sedimentology

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The Feos Formation of the Nijar Basin comprises sediments deposited during the final stage of the Messinian salinity crisis when the Mediterranean was almost totally isolated. Levels of soft-sediment deformation structures occur in both conglomeratic alluvial sediments deposited close to faults and the hyposaline Lago Mare facies, a laminated and thin-bedded succession of whitish chalky marls and intercalated sands alternating with non-marine coastal plain deposits. Deformation structures in the coarse clastics include funnel-shaped depressions filled with conglomerate, liquefaction dykes terminating downwards in gravel pockets, soft-sediment mixing bodies, chaotic intervals and flame structures. Evidence for soft-sediment deformation in the fine-grained Lago Mare facies comprises syndepositional faulting and fault-grading, sandstone dykes, mixed layers, slumping and sliding of sandstone beds, convolute bedding, and pillar and flame structures. The soft-sediment deformed intervals resemble those ascribed elsewhere to seismic shaking. Moreover, the study area provides the appropriate conditions for the preservation of deformation structures induced by seismicity; such as location in a tectonically active area, variable sediment input to produce heterolithic deposits and an absence of bioturbation. The vertical distribution of soft-sediment deformation implies frequent seismic shocks, underlining the importance of seismicity in the Betic region during the Late Messinian when the Nijar Basin became separated from the Sorbas Basin to the north. The presence of liquefied gravel injections in the marginal facies indicates strong earthquakes (M ‡ 7). The identification of at least four separate fissured levels within a single Lago Mare interval suggests a recurrence interval for large magnitude earthquakes of the order of millennia, assuming that the cyclicity of the alternating Lago Mare and continental intervals was precession-controlled. This suggestion is consistent with the present-day seismic activity in SE Spain.

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Earthquake-induced deformational structures in young lacustrine sediments, East Anatolian Fault, southeast Turkey

Cited by 163 publications

References 14 publications

Earthquake-induced soft-sediment deformation structures in Upper Jurassic open-marine microbialites (Neuquén Basin, Argentina)

Earthquake-induced soft-sediment deformation structures in Upper Jurassic open-marine microbialites (Neuquén Basin, Argentina)

Paleoseismological and morphological evidence of slip rate variations along the North Tabriz fault (NW Iran)

Evidence for Late Messinian seismites, Nijar Basin, south‐east Spain

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