Heat flow in the Sea of Marmara Central Basin: Possible implications for the tectonic evolution of the North Anatolian fault

Grall, C.; Henry, Pierre; Tezcan, Devrim; Lépinay, Bernard Mercier de; Bécel, A.; Géli, Louis; Rudkiewicz, Jean-Luc; Zitter, T.A.C.; Harmegnies, B.

doi:10.1130/g32192.1

Cited by 35 publications

(66 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11 in Örgülü, 2011). This seismic activity could be related to sliding on a crustal detachment fault, dipping to the northeast beneath the Ganos Complex, and of comparable strike, dip and depth range as crustal detachments observed further east in multichannel data (Bécel et al, 2009;Grall et al, 2012).…”

Section: The Ganos Landslide Complexmentioning

confidence: 92%

“…This area comprises low-angle normal faults,that probably have been redistributing crustal stretching since the early stages of basin formation (i.e. 5-3.5 Ma) (Bécel et al, 2010;Grall et al, 2012). However, it is unclear whether these low angle faults are still active, except in the southern Central Basin where there is evidence of present day activity (Bécel et al, 2009(Bécel et al, , 2010.…”

Section: Structural and Seismotectonic Contextmentioning

confidence: 95%

“…1). The MMF comprises more precisely three connected segments in the Sea of the Marmara: the Tekirdağ Basin/Western High segment, the Istanbul segment extending over the Central High, and the Çınarcık segments forming two major bends of the Main Marmara Fault Grall et al, 2012). The extensional component of motion is partitioned between oblique portions of the MMF and secondary fault branches (Şengör et al, 1985;Le Pichon et al, 2001;Armijo et al, 2002;Le Pichon et al, 2003;Şengör et al, 2005).…”

Section: Structural and Seismotectonic Contextmentioning

confidence: 99%

“…Part of the extensional deformation is also accommodated by the South Transtensional Zone (STZ, Grall et al, 2012). This area comprises low-angle normal faults,that probably have been redistributing crustal stretching since the early stages of basin formation (i.e.…”

Section: Structural and Seismotectonic Contextmentioning

confidence: 99%

See 3 more Smart Citations

Distribution, morphology and triggers of submarine mass wasting in the Sea of Marmara

et al. 2012

Self Cite

View full text Add to dashboard Cite

An overview is given of mass wasting features along the slopes of the Sea of Marmara, Turkey, based on new data and previously published information. The Sea of Marmara is characterized by active tectonics along the North Anatolian Fault and by eustatic sea level changes controlling the connections both to the Mediterranean and Black Sea (i.e. lacustrine and marine conditions during sea-level low and high stands, respectively). High resolution bathymetric data, subsurface echo-sounder and seismic reflection profiling, seafloor visual observations, as well as stratigraphic analysis of sediment cores have been used to identify, map and date submarine slope failures and mass wasting deposits. Gravity mass movements are widespread on the steep slopes of the Sea of Marmara, and range from small scale slope failures, mainly located within the canyons, to wider unstable areas (20 to 80 km 2 ). The largest mass wasting features, i.e. the Tuzla, Ganos and Yalova complexes, have been analyzed in connection with crustal deformation. These gravitational gliding masses are probably induced by the transtensional deformation within the crust. Moreover, age determination of landslides and debris flows indicate that they were more frequent during the last transgressive phase, when the rate of terrigenous sediments supplied by the canyons to the deep basin was higher. We discuss these results taking into account activity, pre-conditioning and trigger mechanisms for slope instability with respect to tectonics and paleo-environmental changes induced by sea-level oscillations.

show abstract

Section: The Ganos Landslide Complexmentioning

confidence: 92%

Section: Structural and Seismotectonic Contextmentioning

confidence: 95%

Section: Structural and Seismotectonic Contextmentioning

confidence: 99%

Section: Structural and Seismotectonic Contextmentioning

confidence: 99%

See 2 more Smart Citations

Distribution, morphology and triggers of submarine mass wasting in the Sea of Marmara

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…1b). Those sediments are cut by north and south dipping faults with significant normal component of slip, as observed in high-resolution bathymetric maps Armijo et al, 2002;, deep-penetration seismic reflection and refraction data [Wong et al, 1995;Parke et al 1999;Carton et al, 2007;Laigle et al, 2008;Bécel et al, 2009; and 2-D and 3-D high resolution multichannel seismic data [Grall et al, 2012;Kurt et al, 2013]. At odds with the evidence for structural complexity and fault segmentation which appear to be fundamental features of the pull-apart system, Imren et al [2001; [2003] and Şengör et al [2005], among others, have alternatively interpreted the Marmara pull-apart system as a trough resulting mainly from the Western Anatolia N-S extensional regime during the middle Miocene.…”

Section: Geological Settingmentioning

confidence: 99%

Crustal Strain in the Marmara Pull‐Apart Region Associated With the Propagation Process of the North Anatolian Fault

et al. 2018

View full text Add to dashboard Cite

Key Points:• Structural map and geological cross-section of the Ganos-Gelibolu fold system in the Dardanelles region.• Timing, amount of shortening associated to the propagation of the North Anatolian Fault deduced from mapping and critical revision of the stratigraphy.• Reconstruction of the westward propagation of the NAF in the Dardanelles region. AbstractPropagation processes of plate-scale faults through continental lithosphere are poorly documented. The North Anatolian fault (NAF) is a continental right-lateral transform with striking evidence for propagation processes in the Marmara Sea pull-apart region. Earlier work [Armijo et al., 1999] suggests that in the Dardanelles, where the principal, northern branch of that fault (NNAF) enters into the Aegean: (1) a fold-thrust system has progressively developed above the NNAF fault tip, at the WSW corner of the Marmara Sea pull-apart. The main anticline formed there was sheared and its SW half laterally offset by ~70 km to the SW; (2) the timing of structure development appears correlated with sea-level changes associated with the Messinian Salinity Crisis (MSC). Our new description of the Dardanelles (or Ganos-Gelibolu) fold-thrust system is based on structural mapping, field observations and calcareous nannoplankton analyses to date key sedimentary units. Our results provide tight constraints on the main pulse of folding associated with propagation of the tip of the NNAF: it took place in the late Miocene to earliest Pliocene (5.60 to 5.04 Ma), before deposition of undeformed Pliocene marine sediments. The folding is mostly coeval with the MSC and accommodated several kilometers of shortening at the fault tip. After full propagation of the NNAF up to the surface, the folded structure was sheared and right-laterally offset, with an average 14 mm/yr of slip-rate during the past ~5 Myrs. A reconstruction of tectonic evolution suggests a flower structure nucleating and taking root at the tip of the fault.

show abstract

Slip rate estimation along the western segment of the Main Marmara Fault over the last 405-490 ka by correlating mass transport deposits

et al. 2013

Self Cite

View full text Add to dashboard Cite

High‐resolution 3‐D seismic data acquired in the Sea of Marmara on the Western High, along the northwestern branch of the North Anatolian Fault (also known as the Main Marmara Fault), shed new light on the evolution of the deformation over the last 500–600 ka. Sedimentary sequences in ponded basins are correlated with glacioeustatic cycles and transitions between marine and low sea/lake environments in the Sea of Marmara. In the 3 × 11 km2 of the 3‐D seismic survey, deformation over the last 405–490 ka is localized along the main fault branch and north of it, where N130°–N140° trending normal faults and N40°–N50° folding accommodated strike‐slip deformation associated with active argillokinesis. There is some evidence that deformation was more distributed further back in the past, at least over the depth range (<600 m below seafloor) of our survey. A N110° basin and buried ridge system were eventually cut by the presently active fault. The southern part of the basin was then uplifted, while the northern part was folded but continued to subside along the fault. A mass transport deposits complex dated between 405–490 ka shows a lateral displacement of 7.7 ± 0.3 km, corresponding to an estimated slip rate of 15.1–19.7 mm/a. We conclude that this strand of the Main Marmara Fault on the Western High has taken up most of the strike slip motion between the Anatolian and Eurasian plates over the last 405 ka at least.

show abstract

Heat flow in the Sea of Marmara Central Basin: Possible implications for the tectonic evolution of the North Anatolian fault

Cited by 35 publications

References 29 publications

Distribution, morphology and triggers of submarine mass wasting in the Sea of Marmara

Distribution, morphology and triggers of submarine mass wasting in the Sea of Marmara

Crustal Strain in the Marmara Pull‐Apart Region Associated With the Propagation Process of the North Anatolian Fault

Slip rate estimation along the western segment of the Main Marmara Fault over the last 405-490 ka by correlating mass transport deposits

Contact Info

Product

Resources

About