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    A Preliminary Note on Depositional Characteristics and Optical Luminescence Age of a Marine Terrace, Strait of Canakkale, Turkey
    (Coastal Education & Research Foundation, 2013) Avcioglu, Mustafa; Erginal, Ahmet Evren; Kiyak, Nafiye Gunee; Kapan-Yesilyurt, Sevinc; Yiğitbaş, Erdinç
    Avcioglu, M.; Erginal, A.E.; Kiyak, N.G.; Kapan-Yesilyurt, S., and Yigitbas. 2013. A preliminary note on depositional characteristics and optical luminescence age of a marine terrace, Strait of Canakkale, Turkey, Journal of Coastal Research, 29(1), 225-230. Coconut Creek (Florida), ISSN 0749-0208. This preliminary study investigated the depositional features and optical luminescence age of marine terrace sediments located on the east coast of the Strait of Canakkale, Turkey. With regard to depositional setting, the studied sequence is formed mostly of shallow marine deposits rich in quartz and oysters as well as other accessory minerals and various fossil sea shells. In vertical section, the sequence is characterized by two different stratigraphic units, i.e. a 1.50-m-thick sandy to gravely bottom unit (unit A) and an overlying 2.5-m-thick fossiliferous zone (unit B). On the basis of optically stimulated luminescence (OSL) age estimations obtained from six sampling levels from bottom to top, we determined superimposed cycles of deposition during interglacials from 246.47 +/- 25.32 ka (unit A) at MIS 7 to 127.48 +/- 8.91 ka (unit B) at MIS 5.
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    Benthic Faunal Assemblages of the Holocene Sediments from the Southwest Black Sea Shelf
    (Tubitak Scientific & Technological Research Council Turkey, 2009) Ongan, Demet; Algan, Oya; Kapan-Yesilyurt, Sevinc; Nazik, Atike; Ergin, Mustafa; Eastoe, Christ
    Benthic faunal content (benthic foraminifera, mollusca and ostracoda) of sediment cores from the SW Black Sea shelf were examined. Based on the vertical distribution of abundance and diversity of the benthic fauna, three benthic assemblages were distinguished. These assemblages are BF1, BF2 and BF3, and reflect the changes in bottom water from the termination of the Neoeuxinian period to present. BF1 displays high abundance and diversity in the surroundings of the Bosporus channel, diminishing in the shelf sediments further away from the channel. In the Mid-Shelf and Outer Shelf, it displays low abundance and low diversity. BF1 which started to be deposited at about 6 ky BP reflects the source effect of the saline Mediterranean lower layer, diminishing in strength toward more distal areas. In the Outer Shelf, changing foraminiferal faunal content may suggest that relatively low salinity conditions in the bottom water were established after similar to 4 ky BP. BF2 consists of a mixed fauna (brackish and euryhaline Mediterranean species), suggesting transitional conditions with intrusion of Mediterranean water earlier than similar to 8 ky BP. BF3 corresponds to the Neoeuxinian lake phase of the Black Sea.
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    Distribution of Microflora, Meiofauna, and Macrofauna Assemblages in the Hypersaline Environment of Northeastern Aegean Sea Coasts
    (Coastal Education & Research Foundation, 2013) Bassler-Veit, Barbara; Barut, Ipek F.; Meric, Engin; Avsar, Niyazi; Nazik, Atike; Kapan-Yesilyurt, Sevinc; Yildiz, Aysegul
    In this study, the morphology and taxonomy of microflora (charophytes and diatoms), meiofauna (benthic foraminifera and ostracoda), and macrofauna (mollusk) assemblages of the recent surface sediments from saltpans, hypersaline lagoons, and salt lakes of the Gulf of Saros (NW Turkey) were investigated. In total, 44 samples were collected from recent surface sediments in salt pans, hypersaline lagoons, and salt lakes of the Gulf of Saros (Enez Salt Lake, Isik Lake, Kuvalak Lake, Enez Gala Lake, Dalyan Lake, and Tasalti Lake; Karagol, Vakif, and Erikli salt pans; and Uzungol Lagoon), Gallipoli Peninsula (salt pan), Biga Peninsula (Diremin and Azmak Lagoons and Dalyan Salt Lake), and Gokceada Island (salt lake). Surface sediments were collected, and some physical properties were measured, such as temperature, pH, and salt content. Grain size was determined and classified for each sample. In this study, foraminifera, ostracoda, and mollusca faunas in the normal marine environment were used as indicators and compared with the lagoonal environment, which has increased salt content during the summer months.