Determination of the tectonic evolution of the Edremit Gulf based on seismic reflection studies

Dogan, Bulent; Sertçelik, Fadime; Canbay, Mücella; Küçük, H. M.

doi:10.1007/s11001-009-9072-2

Cited by 8 publications

(14 citation statements)

References 29 publications

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“…Likewise, the greatest seismic stratigraphic resolution proposed for the sediment pile in the gulf of Edremit does not go beyond separating 4 layers within Neogene deposits overlain by Holocene sediments (Kurtuluş et al, 2009), or an upper 200-to 750-m-thick sequence corresponding to the 'post Lower Pliocene' graben fill (Yilmaz and Karacik, 2001), and is thus of no help for detecting phases of increased activity within the Plio-Quaternary period in this area. However, Işler et al (2008) interestingly mentioned that Quaternary sedimentation in the Bayramiç depression, northwest of the Kazdag massif, might have come to an end around 1.2 Ma, yielding to river incision through the~150-m-thick early Pleistocene fill since then.…”

Section: Marine Terraces Basin Sedimentation and River Terracesmentioning

confidence: 98%

“…Northward motion of the Arabian indenter led to the formation of the Caucasus orogen and caused extrusion of the Anatolian microplate, whose westward escape, accompanied by counter-clockwise rotation, is guided by the North and East Anatolian strike-slip faults. In the same time, in response to slab retreat and, possibly, post-orogenic collapse (Taymaz et al, 2007, and references therein), extension dominated much of the Cenozoic evolution in the Aegean Sea and western Turkey and is still prevailing in the whole area, from the Corinth rift (Bell et al, 2009;Floyd et al, 2010) to the horsts and grabens of western Turkey (Çiftçi and Bozkurt, 2009;Kurtuluş et al, 2009;Süzen et al, 2006). GPS velocities (Reilinger et al, 2006) show that back-arc extension in the Aegean is currently more rapid than the westward motion of Anatolia, thus accommodating the latter's displacement and still allowing local graben formation.…”

Section: Introductionmentioning

confidence: 99%

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Morphometric age estimate of the last phase of accelerated uplift in the Kazdag area (Biga Peninsula, NW Turkey)

2013

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Keywords:Aegean domain North Anatolian Fault Zone Morphometry R/S R index Drainage network Uplift While the Plio-Quaternary uplift of the Kazdag mountain range (Biga Peninsula, NW Turkey) is generally acknowledged, little is known about its detailed timing. Partly because of this lack of data, the cause of this uplift phase is also debated, being associated either to back-arc extension in the rear of the Hellenic subduction zone, to transpression along the northern edge of the west-moving Anatolian microplate, or to extension driven by gravitational collapse. Here, we perform a morphometric study of the fluvial landscape at the scale of the Biga Peninsula, coupling the recently developed R/S R analysis of the drainage network with concavity and steepness measures of a set of 29 rivers of all sizes. While the dependence of profile concavity on basin size confirms that the landscape of the peninsula is still in a transient state, the spatial distribution of profile steepness values characterized by higher values for streams flowing down from the Kazdag massif shows that the latter undergoes higher uplift rates than the rest of the peninsula. We obtain a S R value of 0.324 ± 0.035 that, according to the relation established by Demoulin (2012), yields an age range of 0.5-1.3 Ma and a most probable value of 0.8 Ma for the time of the last tectonic perturbation in the region. In agreement with the analysis of knickpoint migration in a subset of rivers, this suggests that a pulse of uplift occurred at that time and, corroborated by sparse published observations in the Bayramiç and Çanakkale depressions, that the peninsula was uplifted as a whole from that time. This uplift pulse might have been caused by transient compressive conditions in the Anatolian plate when the Eratosthenes seamount came to subduct beneath the Cyprus arc around the early-to-mid Pleistocene transition (Schattner, 2010).

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Section: Marine Terraces Basin Sedimentation and River Terracesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Morphometric age estimate of the last phase of accelerated uplift in the Kazdag area (Biga Peninsula, NW Turkey)

2013

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“…6b). Two groups of secondary faults which have been defined by Kurtuluş et al (2009) in the eastern part of the gulf might be related with this main fault. The first group was formed by a zone of ENE-WSW trending high-angle normal faults (Early Miocene), which are subparallel to the main fault.…”

Section: Shallow Seismic Datamentioning

confidence: 96%

The earthquakes and related tsunamis of October 6, 1944 and March 7, 1867; NE Aegean Sea

et al. 2011

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During two distinct earthquakes occurred on March 7, 1867 and October 6, 1944, tsunami waves were also observed at some localities around the Gulf of Edremit, NE Aegean Sea. The first event (M w = 6.8) mostly affected the city of Mitilini of Lesvos Island while the Gulf of Edremit-Ayvacık earthquake (M S = 6.8) largely affected the northern and eastern coastal areas of the Gulf of Edremit. In 1944 earthquake, numerous surface cracks and water gushes were reported. The coastal neighborhoods of the town of Ayvalık in the east were flooded by tsunami waves. At the WSW extend of the main fault observed on land, which is parallel to the present-day slip vectors, some normal-oblique faults were observed close and subparallel to the northern coast. On the basis of historical documents, reports, interviews, geological setting, field observations and marine seismic reflection data, the 1944 earthquake was not triggered by one of the main fault segments but by a secondary fault or fault group which was described in this study. Depending on the distribution of tensional and compressional forces in the region, which rotates clockwise under the control of the middle strand of the North Anatolian fault, secondary fault groups become important. The moment tensor parameters of such small-size events have been determined and have obtained consistent results with the faults proposed in this study.

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“…(3) The major fault zone running parallel to the coastline of the Edremit Gulf has apparently controlled the development of the coastal morphology. Kurtuluş et al (2009) suggested a structural map and tectonic model for the Edremit Gulf was derived from interpreting 21 deep seismic profiles that trending NE-SW and NW-SE directions within the gulf. According to the authors, there is no evidence of any strike-slip faulting within the study area and the gulf has controlled by only E-W trending parallel normal faults.…”

Section: Introductionmentioning

confidence: 99%

“…Okay and Satır, 2000), (b) normal faults associated with AES (e.g. Kurtuluş et al, 2009), and (c) coupled effects of both NAFS and AES (e.g. Boztepe-Güney et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Plio-Quaternary kinematic development and paleostress pattern of the Edremit Basin, western Turkey

et al. 2016

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Determination of the tectonic evolution of the Edremit Gulf based on seismic reflection studies

Cited by 8 publications

References 29 publications

Morphometric age estimate of the last phase of accelerated uplift in the Kazdag area (Biga Peninsula, NW Turkey)

Morphometric age estimate of the last phase of accelerated uplift in the Kazdag area (Biga Peninsula, NW Turkey)

The earthquakes and related tsunamis of October 6, 1944 and March 7, 1867; NE Aegean Sea

Plio-Quaternary kinematic development and paleostress pattern of the Edremit Basin, western Turkey

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