Sea-level changes modified the Quaternary coastlines in the Marmara region, northwestern Turkey: What about tectonic movements?

Koral, Hayrettin

doi:10.1007/978-1-4020-5302-3_24

Cited by 5 publications

(3 citation statements)

References 52 publications

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“…Okay et al, 2000;Gö kaşan et al, 2001;Le Pichon et al, 2001, 2003Yaltırak, 2002;Alpar and Yaltırak, 2002;Elmas, 2003;Yigitbaş et al, 2004;Gü rer et al, 2003Gü rer et al, , 2006Dolu et al, 2007;Koral, 2007;Gü rbü z and Gü rer, 2008b;Schwab et al, 2009;Leroy et al, 2009). According to the latest detailed studies in the study area, the Izmit-Sapanca Corridor developed as an asymmetrical pullapart basin in the late Pliocene and Lake Sapanca originated as a different pull-apart basin in the Izmit-Sapanca asymmetric pull-apart basin by the cross-basin fault in the Middle Pleistocene (Gü rbü z and Gü rer, 2008bGü rer, , 2009.…”

Section: Geological Settingmentioning

confidence: 99%

Science versus myth: was there a connection between the Marmara Sea and Lake Sapanca?

Gürbüz

Leroy

2010

J Quaternary Science

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The existence of an alternative strait between the Black and Marmara Seas, east of today's Istanbul Strait, on the route of Izmit Gulf-Lake Sapanca-Lower Sakarya Valley, was already claimed at the end of the 19th century and has also been considered in several recent studies. Firstly, in historical documents over the last 2500 years, some natural and artificial waterways between the Marmara Sea and Lake Sapanca have been reported. Secondly, according to the present geomorphological research between the Izmit Gulf and Lake Sapanca, the gutter-like morphology, which was formed by the tectonics of the North Anatolian Fault in the centre of the plain, is suggested as a suitable geomorphic feature for a possible waterway between the gulf and the lake. Thirdly, the Izmit Plain that lies between the Izmit Gulf and Lake Sapanca is studied in this paper through its sedimentology. The facies associations of the basin-fill deposits are examined here through the lithological descriptions and fossil assemblages in nine cores drilled in the plain. All these data suggest that the shoreline in the Quaternary did not lie much further landward from its current position, that the inner part of the plain was covered by a lagoon/coastal-swamp environment and that a connection may have existed at an unknown time (perhaps for the last time during the Middle/Late Pleistocene) with perhaps only partial reuse during the last millennia in the course of catastrophic seismic movements and consecutive floods.

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Section: Geological Settingmentioning

confidence: 99%

Science versus myth: was there a connection between the Marmara Sea and Lake Sapanca?

Gürbüz

Leroy

2010

J Quaternary Science

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“…The Western Black Sea basin is located within the Ponto-Caspian basin groups. Transgression areas associated with tectonic activity on the southern margin of the Black Sea were also identified (Koral, 2007). The sea level in the north of the Black Sea has changed up to -60 m in the last 10 ka (Nevesskaja, 1974;Tchepalyga, 1980;Voskoboinikov et al, 1982).…”

Section: Introductionmentioning

confidence: 99%

Traces of Mediterranean origin Holocene transgression in the drainage basin of Riva-Çayağzı Creek of the Black Sea (northeastern İstanbul-Turkey)

Dogan¹,

Karakaş²,

Nazik³

et al. 2020

Turkish J Earth Sci

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The Riva-Çayağzı Creek (İstanbul, Black Sea) pours into the Black Sea from the coasts of Turkey. In the drainage basin of this creek, both deep and shallow drillings were undertaken, and the minimum thickness of Holocene stratigraphy was determined as 30 m. The Holocene young deposits are mainly composed of fine-grained sediments and clay, which has the most prominent thickness. The energy of water during the sedimentation process was low and stagnant in the Riva-Çayağzı Creek basin. When the marine mollusc fossils obtained from the shallow boring cores are evaluated, it can be deduced that the sea level in the study area had drawdown to -21 m in elevation. Ostracod, foraminifer, and diatom fossils determined in all cores of shallow borings are the same or similar to Mediterranean origin euryhaline forms. According to this outcome, the presence of brackish water in the study area is the result of the sea level rise that occurred at ca. 9.4 ka due to the Mediterranean origin fluctuations passing through the Dardanelles and Bosphorus straits into the Black Sea. Thus, it is understood that the sea level entered from the present Riva (İstanbul)-Black Sea coastline to at least 13 km south of the Çayağzı Creek drainage basin. The Early Holocene transgression has been defined for the first time here in the specific location of the Black Sea coast of Turkey. Accordingly, in the Riva-Çayağzı Creek basin, a lagoon sedimentation environment with low energy and stagnant water, having mainly brackish water with partial seasonal change and sea connection, was determined.

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“…It has a pull-apart basin system that lies along the NAFZ and comprises three deep sub-basins (e.g. Barka and Kadinsky-Cade 1988;Barka 1992;Ergü n and Ö zel 1995;Wong et al 1995;Armijo et al 1999Armijo et al , 2002Okay et al 2000;Gü rer et al 2003Gü rer et al , 2006Koral 2007; Gü rbü z and Gü rer 2008).…”

mentioning

confidence: 99%

Orientations of palaeotectonic features as a key to understanding the neotectonic block rotation of the Kocaeli peninsula, NW Turkey

Gürbüz

2009

International Geology Review

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Sea-level changes modified the Quaternary coastlines in the Marmara region, northwestern Turkey: What about tectonic movements?

Cited by 5 publications

References 52 publications

Science versus myth: was there a connection between the Marmara Sea and Lake Sapanca?

Science versus myth: was there a connection between the Marmara Sea and Lake Sapanca?

Traces of Mediterranean origin Holocene transgression in the drainage basin of Riva-Çayağzı Creek of the Black Sea (northeastern İstanbul-Turkey)

Orientations of palaeotectonic features as a key to understanding the neotectonic block rotation of the Kocaeli peninsula, NW Turkey

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