On the origin of the bosphorus

Erkan Gökaşan; Emin Demirbaǧ; Fazli Y. Oktay; Berkan Ecevitoǧlu; Mehmet Şimşek; Hüseyin Yüce

doi:10.1016/S0025-3227(97)00022-4

On the origin of the bosphorus

Erkan Gökaşan, Emin Demirbaǧ^*, Fazli Y. Oktay, Berkan Ecevitoǧlu, Mehmet Şimşek, Hüseyin Yüce

^*Corresponding author for this work

Department of Geophysical Engineering

Research output: Contribution to journal › Article › peer-review

81 Citations (Scopus)

Abstract

The Palaeozoic-Upper Cretaceous basement palaeomorphology of the Bosphorus (the Strait of Istanbul) bears the evidence of a valley of a palaeostream running to the Black Sea in the north, a palaeobasin deeper than -160 m opening to the Sea of Marmara in the south, and a barrier between these two features. This suggest that the northern part of the Bosphorus was formed mainly by fluvial activity, whereas the southern part developed as a basin by faulting. The recent sediment thickness exceeds 130 m in the basin, indicating that the southern part of the Bosphorus was once essentially depositional rather than an erosional. The present form of the Bosphorus was established in Holocene time by the connection of the basin in the south with the stream in the north. The barrier and the stream valley in the north have been deepened by erosion and faulting to form a strait connecting the Black Sea and the Mediterranean.

Original language	English
Pages (from-to)	183-199
Number of pages	17
Journal	Marine Geology
Volume	140
Issue number	1-2
DOIs	https://doi.org/10.1016/S0025-3227(97)00022-4
Publication status	Published - Jul 1997

Funding

This researchw as supportedb y a TDBITAK grant (DEBAG-102) and partly by National Marine Geology and Geophysics Program (Coordinator Dr. Naci Gortir). We are gratefult o Dr. Yticel Ytlmaz for his valuablec ontributions and critical review of the manuscript.W e thank Drs. Tugrul Gent, Aykut Barka, Mehmet Sakmc, Tuncay Taymaz,I smail Erig, Recep H. Eren, Naci Orbay, Aral I. Okay, Ertugrul Dogan, Engin Meric, Namik Cagataya nd Htilya Kurt for their discussionisn geologicaal nd geophysicacl oncepts. We thank Drs. Sirn Erinc, Oguz Erol, Ahmet Ertek, Htiseyin Turoglu and Mustafa Fettahoglu for their contributionsi n geomorphologicacl on-cepts.W e warmly thank Marine Geology editors Dr. J.W. Piper and Dr. A. Maldonado for their

Funders	Funder number
National Marine Geology and Geophysics Program
TDBITAK	DEBAG-102

Keywords

Black Sea
Bosphorus
Sea of Marmara
Shallow seismic
Strait of Istanbul

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10.1016/S0025-3227(97)00022-4

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abstract = "The Palaeozoic-Upper Cretaceous basement palaeomorphology of the Bosphorus (the Strait of Istanbul) bears the evidence of a valley of a palaeostream running to the Black Sea in the north, a palaeobasin deeper than -160 m opening to the Sea of Marmara in the south, and a barrier between these two features. This suggest that the northern part of the Bosphorus was formed mainly by fluvial activity, whereas the southern part developed as a basin by faulting. The recent sediment thickness exceeds 130 m in the basin, indicating that the southern part of the Bosphorus was once essentially depositional rather than an erosional. The present form of the Bosphorus was established in Holocene time by the connection of the basin in the south with the stream in the north. The barrier and the stream valley in the north have been deepened by erosion and faulting to form a strait connecting the Black Sea and the Mediterranean.",

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AU - Gökaşan, Erkan

AU - Demirbaǧ, Emin

AU - Oktay, Fazli Y.

AU - Ecevitoǧlu, Berkan

AU - Şimşek, Mehmet

AU - Yüce, Hüseyin

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N2 - The Palaeozoic-Upper Cretaceous basement palaeomorphology of the Bosphorus (the Strait of Istanbul) bears the evidence of a valley of a palaeostream running to the Black Sea in the north, a palaeobasin deeper than -160 m opening to the Sea of Marmara in the south, and a barrier between these two features. This suggest that the northern part of the Bosphorus was formed mainly by fluvial activity, whereas the southern part developed as a basin by faulting. The recent sediment thickness exceeds 130 m in the basin, indicating that the southern part of the Bosphorus was once essentially depositional rather than an erosional. The present form of the Bosphorus was established in Holocene time by the connection of the basin in the south with the stream in the north. The barrier and the stream valley in the north have been deepened by erosion and faulting to form a strait connecting the Black Sea and the Mediterranean.

AB - The Palaeozoic-Upper Cretaceous basement palaeomorphology of the Bosphorus (the Strait of Istanbul) bears the evidence of a valley of a palaeostream running to the Black Sea in the north, a palaeobasin deeper than -160 m opening to the Sea of Marmara in the south, and a barrier between these two features. This suggest that the northern part of the Bosphorus was formed mainly by fluvial activity, whereas the southern part developed as a basin by faulting. The recent sediment thickness exceeds 130 m in the basin, indicating that the southern part of the Bosphorus was once essentially depositional rather than an erosional. The present form of the Bosphorus was established in Holocene time by the connection of the basin in the south with the stream in the north. The barrier and the stream valley in the north have been deepened by erosion and faulting to form a strait connecting the Black Sea and the Mediterranean.

KW - Black Sea

KW - Bosphorus

KW - Sea of Marmara

KW - Shallow seismic

KW - Strait of Istanbul

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VL - 140

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JO - Marine Geology

JF - Marine Geology

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ER -

On the origin of the bosphorus

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