Was the 1899 Menderes Valley Earthquake a double earthquake? Historical and paleosismological constraints

Ocakoğlu, Faruk; Açıkalın, Sanem; Güneş, Günver; Özkes, Sevilay; Dirik, Kadir; Özsayın, Erman

doi:10.1016/j.jseaes.2013.02.026

Cited by 13 publications

(27 citation statements)

References 38 publications

(41 reference statements)

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“…In addition, the focal mechanism solutions of the recent earthquakes located in the BMG support this ongoing extension (Ocakoğlu et al, 2013). Due to this evidence, most of the N-S-oriented tensional stress regime (the fault planes of stations 12 and 13 cutting the Plio-Quaternary units) is accepted as the last tectonic phase.…”

Section: Interpretation Of the Paleostress Analysesmentioning

confidence: 77%

“…Towards the basin center, particularly in the Karacasu graben, the Karacasu formation rapidly advances towards the basin over the already deformed Karacaören formation. In addition, reworked lacustrine materials mainly occur beneath the Karacasu formation (Ocakoğlu et al, 2007). A basal unconformity widely occurs at 400 m a.s.l.…”

Section: Stratigraphymentioning

confidence: 99%

“…The Karacasu graben has been recently studied in terms of basinfill pattern and its paleoclimatic relevance (Ocakoğlu et al, 2007;Alçiçek and Mayda, 2009;Alçiçek and Jimenez-Moreno, 2013). However, studies concerning the structural evolution of both grabens, particularly recognition of structural controls in the basinfill, are scarce or unpublished (Paton, 1992;Ocakoğlu et al, 2007). The present study serves to draw a more complete spatiotemporal tectonosedimentary picture of Neogene extension in the vicinity of the BMG by filling in the existing gaps.…”

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confidence: 99%

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Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Ocakoğlu¹,

Açıkalın²,

Özsayın³

et al. 2014

Turkish J Earth Sci

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IntroductionThe E-W-running Büyük Menderes and Gediz grabens, with their prominent morphologies, have attracted the attention of many researchers in the study of the Late Oligocene to Recent extension of West Anatolia. Being symmetric to each other, both zones in the Central Menderes Massif represent narrow intracontinental deformation belts with complex structural history and display multiple basin developments (Figure 1). The Büyük Menderes Graben (BMG) is limited by a regional detachment in the north. The basin is surrounded by the E-W-running Küçük Menderes Graben in the north and by the Muğla-Yatağan Basin and Kale-Tavas Molas Basin in the far south. Four Mio-Pliocene depressions (from west to east, the Çine, Bozdoğan, Karacasu, and Denizli basins) having overall N-S trends are situated just south of the BMG (Figure 1).Modes of development of variously oriented grabens in this region have received little attention. Although there is a hypothesis called the supradetachment transtensional mechanism (Yılmaz et al., 2000;Çemen et al., 2006;Çiftçi et al., 2011;Gessner et al., 2013), it is not substantiated by considerable structural or depositional field data from N-S running grabens. The previous studies in the BMG and in the vicinity of the BMG revealed a complicated and sometimes conflicting Neogene deformation history. For instance, formation of the Söke Basin in the west tip during the Early to Late Miocene was explained in terms of N-S extension (either detachment or high-angle faultrelated) (Sümer et al., 2013). On the other hand, both N-S compression- (Gürer et al., 2009) and N-S extension-related sedimentary basins (Emre and Sözbilir, 1987;Cohen et al., 1995;Bozkurt, 2000) were reported in the central part of the BMG in the Middle and Late Miocene. Further east in the Denizli Basin, the extension direction turns to NNW (or NE and NW) (Kaymakçı, 2005;Koçyiğit, 2005). This brief account suggests that further multidisciplinary detailed studies are still required in unexplored areas in order to reconcile or negate the existing conflicting views and provide more detailed structural history in the BMG and its vicinity.In this study we focused on the stratigraphic, sedimentological, and structural characteristics of the Karacasu and Bozdoğan (K&B) basins just south of the Abstract: The Karacasu and Bozdoğan basins, which trend obliquely to modern grabens in the Central Menderes Massif, are investigated in terms of morphology, basinfill architecture, and structure. Evaluation of the previous geophysical and new structural data indicates that the basins are symmetrical grabens mostly running in a N-S direction. Analysis of sedimentary facies of the basins' infill supports the simple graben model by revealing lateral alluvial/colluvial fans in basin margins and axial fluvial/lacustrine environments in a central trough. The long-term changes between fluvial and lacustrine conditions in the basins are attributed to paleoclimatic origin. Paleostress analysis of slickensides substantiates that the basins were deformed...

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Section: Interpretation Of the Paleostress Analysesmentioning

confidence: 77%

Section: Stratigraphymentioning

confidence: 99%

mentioning

confidence: 99%

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Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Ocakoğlu¹,

Açıkalın²,

Özsayın³

et al. 2014

Turkish J Earth Sci

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“…Recently, it was also reported that this ground surface rupture was continued up to Ortakçı Town to the further east-north-east in the HorsunluBuharkent geothermal area (Ocakoğlu et al, 2013).…”

mentioning

confidence: 85%

“…The wellidentified active master fault segments in the NazilliBuharkend geothermal area are, from west to east, the Nazilli, Arslanlı, Kuyucak, Yöre, Kurtuluş, Gencelli, Feslek, Çavdardüzü and Ortakçı segments (Figures 3 and 4). Their activeness are evidenced by not only the above-mentioned morphotectonic criteria but also both the historical (the 25 or 26 B·C., the 23 February 1653 A.D., and the 20 September 1899 A.D. Menderes valley earthquakes with the intensity IX) (Altunel, 1999;Ambraseys & Finkel, 1987;Ambraseys & Jackson, 1998l Ergin, Güçlü, & Uz, 1967Eyidoğan, Utku, Güçlü, & Değirmenci, 1991;Ocakoğlu et al, 2013;Figure 15. General view of the master fault scarp and trace (F-F) of the Böğrüdelik fault zone (view to N-NE).…”

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confidence: 99%

An overview on the main stratigraphic and structural features of a geothermal area: the case of Nazilli-Buharkent section of the Büyük Menderes Graben, SW Turkey

Koçyi̇ği̇t

2015

Geodinamica Acta

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The study area is Nazilli-Buharkent section of the Büyük Menderes Graben. This is one of the most active intracontinental extensional structures shaping the south-western Anatolian graben-horst system, which comprises the southwestern frontal part of the Anatolian platelet. The Büyük Menderes Graben is about 3-30 km wide, 170 km long and approximately E-W-trending depression included in the back-arc section of the northerly-dipping south Aegean-Cyprian subduction zone. The Büyük Menderes Graben of episodic origin has two morphotectonic configurations: (1) a wider, uplifted, dissected and deformed initial configuration of late Early-late Middle Miocene age; and (2) the narrower, linear, undeformed and continuous recent configuration of Quaternary age. These two configurations are here termed as the Büyük Menderes palaeotectonic graben and the Büyük Menderes modern (neotectonic) graben, respectively. These two grabens are represented by two sedimentary packages separated by an intervening angular unconformity. The 1.1-km-thick older sedimentary package is deformed (steeply tilted to folded) and consists of, from bottom to top, unsorted boulder-block basal clastics and coal-bearing flood plain to lacustrine deposits of late Early-late Middle Miocene age. The younger sedimentary package is undeformed and consists of very thick (up to 0.9 km) debris flow and fluvial deposits of Quaternary age. The palaeotectonic configuration of the Büyük Menderes Graben is bounded by the Hasköy-Künüpe and İğdecik structural segments of the Büyük Menderes detachment fault. However, the modern configuration of the Büyük Menderes Graben is bounded by the Kuyucak and Menderes high-angle normal fault zones, composed of numerous fault segments, which cut and displace deeply the detachment fault. Hot water springs occur along the traces of the detachment faults. But they are not observed along the traces of modern graben-boundary faults. This reveals that the lowangle detachment fault is being still used by the geothermal fluids. Indeed, it is a fact that the geothermal fluids are shared by both the older detachment and younger high-angle normal faults at their intersection at depth, because the faults are the most suitable ways for the underground circulations of both cold meteoric waters and geothermal fluids, i.e. the geothermal system in south-western Turkey is fault-controlled. Consequently, the geothermal potential of this extensional domain is quite high based on the criteria such as the active tectonic and related faults, sources of high-heat, reservoir rocks with high porosity, reservoir cap rocks with no or low permeability and cold meteoric water supply enough. In order to obtain huge volume of geothermal fluids, first of all, whole steps of the geothermal exploration have to be completed, and then the site of borehole(s) has to be chosen so that it penetrates the intersection of low-angle detachment fault, high-angle normal fault(s) and the reservoir rocks overlain by the thick and impermeable cap rock(s).

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Determining the surface fault-rupture hazard zone for the Pazarcık segment of the East Anatolian fault zone through comprehensive analysis of surface rupture from the February 6, 2023, Earthquake (Mw 7.7)

Softa

2024

J. Mt. Sci.

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Was the 1899 Menderes Valley Earthquake a double earthquake? Historical and paleosismological constraints

Cited by 13 publications

References 38 publications

Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

An overview on the main stratigraphic and structural features of a geothermal area: the case of Nazilli-Buharkent section of the Büyük Menderes Graben, SW Turkey

Determining the surface fault-rupture hazard zone for the Pazarcık segment of the East Anatolian fault zone through comprehensive analysis of surface rupture from the February 6, 2023, Earthquake (Mw 7.7)

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