Date

2019-09-06

Author

Büyükmeriç, Yeşim
Yümün, Zeki Ünal
Nazik, Atike
Kılıç, Ali Murat
Alçiçek, Hülya
Yılmaz, İsmail Ömer
Kaya Özer, Caner
Kayseri Özer, Mine Sezgül
Alçiçek, Mehmet Cihat
Koral, Hayrettin

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This study covers the first results obtained from the examination of samples taken from the sea on the TAE-II route in the northwest of Antarctic Peninsula. The study was conducted in 8 localities and samples were taken from the muds of the seabottom at depths ranging from-20 to-60 m, by using grab method. Sediment samples consist of greenish gray high water content silty clay (slime) with black zones and sandy silty clay lithologies containing blackish, greenish gray colored, less watery fine sandy silt and brownish gray colored fine gravel grains. It is remarkable that the samples are rich in organic content and smelly. The samples were transferred to the relevant experts and examined for fauna, flora and palinomorph communities and geochemical properties. As a result of the examination, mollusc (gastropod, bivalve), benthic foraminifera, ostracod, diatom species were found; But, no evidence was found regarding planktic foraminifer, nannofossil and palinomorph communities. According to the findings, Aequiyoldia eightsii (Jay, 1839) and Laternula elliptica (P.P. King, 1832) from bilvalves and Cytheropteron (Loxoreticulatum) fallax (Mueller, 1908) were found on the shores of the island of Hovgaard. Among the findings of the island of Horseshoe living as basalts settled on the current patelloid gastropods from Nacelle concinna (H. Strebel, 1908) 's presence is remarkable. Ostracod species, Cytheropteron (Loxoreticulatum) fallax (Mueller, 1908) was also found in the same locality. Moreover, benthic foraminifera species such as Lobatula lobatula (Walker and Jacob), Paracassidulina sagamiensis (Asano and Nakamura, 1937), Haplophragmoides constrictus, Haplophragmoides constrictus, Haplophragmoides constrictus, Miliammina echigoensis Miliolinella obesa, Miliolinella dilatata, Pyrgo williamsoni, Sigmolina sigmoide were found. The islands in the study area are located in an environment with active plate movements and consist mainly of magmatic and metamorphic rocks. The regions where samples are taken are natural environments where there is no settlement, population density, industry and maritime transport. On the other hand, as a result of the geochemical analysis of the samples, the localities of the ferromagnesian and metallic elements (Al, B, Cd, Co, Cr, Cu, Fe, Mn, Ni, Zn, Na, Mg, K, Ca and P) concentrations were found to be relatively high and close to each other. The highest Mn and Fe values of one sample from King George Island are noteworthy. It is thought that this may be caused by ores from the bedrock around. Heavy metals such as copper and cadmium, which are naturally high in the coastal ecosystems, can accumulate in the tissues of gastropod Nacella concinna. For this reason, the heavy metals Nacella concinna on the island of Horseshoe is considered to have been due to the volcanic origin of the units during the melting of the glaciers and due to the leachate from the sediments.

URI

https://hdl.handle.net/11511/83361

Collections

Department of Geological Engineering, Conference / Seminar