Superficial deep-water sediments of the Eastern Marmara Basin

Date

1989-3

Author

Evans, G.
Erten, H.
Alavi, S. N.
Von Gunten, H. R.
Ergin, M.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

228
views

0
downloads

Superficial sediments (top ∼ Im) of the Eastern Mediterranean Basin, Sea of Marmara, Turkey accumulated rapidly (0.087 ± 0.012 g/cm2 · y) by hemipelagic sedimentation with only limited amounts of gravity flow or bottom current action under low oxygenated but not anoxic conditions. They have restricted faunas, relatively higher organic carbon (1–1.8%) and lower calcium carbonate (14–20%) contents than other Eastern Mediterranean Basin sediments. Sedimentation shows little change over the last millenium except for an increase in Cu, Zn, Pb, Cr, and P over the last few centuries. The increase was most likely caused by increased metallurgical activities since the eighteenth century but are not at sufficient levels for the area to be regarded as polluted.

Subject Keywords

Geotechnical Engineering and Engineering Geology, Earth and Planetary Sciences (miscellaneous), Environmental Science (miscellaneous), Oceanography, Geosciences, Multidisciplinary

URI

https://hdl.handle.net/11511/51756

Journal

Geo-Marine Letters

DOI

https://doi.org/10.1007/bf02262815

Collections

Department of Geological Engineering, Article

Suggestions

OpenMETU
Core

Subaerially exposed Late-Quaternary basinal shelf of the inner Mersin Bay, eastern Mediterranean: Paleoenvironmental evidence Ergin, M (Springer Science and Business Media LLC, 1996-05-01) High-resolution seismic profiles and petrographic data from surface and subsurface sediment samples from Mersin Bay, together with lithologic data from boreholes, were used to determine the origin and distribution of the pre- or early-Holocene unconformities in Mersin Bay (eastern Mediterranean). Reflectors corresponding to unconformities separate the younger, unconsolidated, marine transgressive sediments (Holocene) from the underlying, relatively coarser, consolidated sediments (Plio-Pleistocene). These u...
Environmental geological and geotechnical investigations related to the potential use of Ankara clay as a compacted landfill liner material, Turkey Met, İlker; Akgün, Haluk; Türkmenoğlu, Asuman Günal (Springer Science and Business Media LLC, 2005-01-01) Clay-bearing Upper Pliocene red clastics and Quaternary alluvial deposits occupy the Ankara basin. The clayey levels of the Upper Pliocene deposits, referred to as Ankara clay, is considered as a source for compacted clay liners due to their low coefficients of permeability and widespread distributions throughout Ankara. This study investigates the geological, geotechnical and mineralogical properties of the founding clayey soils at two sites of the Ankara region. The geotechnical index properties along wit...
SWELL BEHAVIOR OF ARID CLIMATE SHALES FROM SAUDI-ARABIA EROL, AO; DHOWIAN, A (Geological Society of London, 1990-01-01) Arid and hot climatic conditions influence the development of surficial (superficial) sediments by aggravating the desiccation and weathering processes. Such environmental factors promote the occurrence of expansive soils in the Middle East. This study deals with the nature and extent of expansive soil problems in major development areas of Saudi Arabia where severe damage has been experienced in numerous projects. The expansive soils primarily consist of shales of Tertiary age which occur in a narrow strip...
Seismic stratigraphy of Late Quaternary sediments of western Mersin Bay shelf, (NE Mediterranean Sea) Okyar, M; Ergin, M; Evans, G (Elsevier BV, 2005-10-15) High-resolution shallow seismic-reflection profiles obtained from the western Mersin Bay have revealed the existence of the two distinct depositional sequences (C and B) lying on a narrow and relatively steeply-sloping continental shelf which mainly receives its sediments from the ephemeral rivers. The upper Holocene sedimentary sequence (C) is characterized by stratified (simple to complex) to chaotic reflection configurations produced by the development of a prograding wedge of terrigenous sediment. Parti...
Density currents in the two-layer flow: an example of Dardanelles outflow Besiktepe, ST (Elsevier BV, 2003-06-01) Observations from hydrographic surveys are used to describe the density current flowing through the Dardanelles strait into the Marmara Sea. Aegean water plunges below the surface and flows into the Marmara Sea. This flow joins into the Marmara Sea as a negatively buoyant plume and sinks through the deeper parts. Seasonal variation in the incoming water density results in the observing mainly two different forms of the density current in this area. These two forms are boundary currents and intrusion. Bounda...

Citation Formats

G. Evans, H. Erten, S. N. Alavi, H. R. Von Gunten, and M. Ergin, “Superficial deep-water sediments of the Eastern Marmara Basin,” Geo-Marine Letters, pp. 27–36, 1989, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51756.