D.P. Dimitrov. RADIOCARBON DATING (14C) OF THE SHELF AND DEEP SEE SEDIMENTS OF THE BLACK SEA

D.P. Dimitrov
Institute of Oceanology, Bulgarian Academy of Sciences, Varna, Bulgaria
RADIOCARBON DATING (14C) OF THE SHELF AND DEEP SEE SEDIMENTS OF THE BLACK SEA
Numerous radiocarbon (14C) dating organic material of mollusk and bottom sediments were made. Objective of the research was absolute age determinination for geocatastrofic occurense and the beginning of sapropele formation. It took place in geochronological interval — 8—9 thousand years. Holocene and LatePleistocene strata is stratified. Many drills of the shelf and its periphery in the bar zone, where the most complete cross-section of the Upper Pleistocene sediments was established, underwent radiocarbon datings to determine the age of sediments (table 1). The published results from the estimates of the absolute age of sediments on the coast and in the northwestern part of the shelf (Semenenko, Koyumdzhieva, Kovalyuh, 1976; Shterbakov et al., 1978) as well as in the deep valley of the Black Sea were also taken into account (Degens, Ross, 1972, Shimkus et al., 1976; Ross, Neprochnov, 1978; Dimitrov, 1978, 1982). Special attention was paid to the age segmenation of the Neoeuxinian littoral and clayey sediments, reaching highest thickness of 330 cm on the periphery of the shelf in drill 2345 (Filipova, 2003). 

Key words: Radiocarbon dating (14C), shelf sediments, deep see sediments, diatoms analyses, mollusk fauna, palynological analyses.

References

1. Arkhangelsky, A., N. Strakhov Geological structure and history of development of the Black Sea. The Academy of Sciences of the USSR Press (MoscowLeningrad), 1938. — 310 р. (in Russian).

2. Atanasova, J. Paleoecological setting of the western Black Sea area during the last 15000 years. The Holocene, 2005. — Р. 1—9.

3. Cagatay N., M. Gorur, A. Algan, C. Estoe, A. Tchapalyga, D. Ongan, T. Kuhn, I. Kuscu. Glacial-Holocene paleoceanography of the Sea of Marmara: timing of connections with the Mediterranean and Black Seas. / Marine Geology, 2000. — 167. — Р. 191—206.

4. Degens, E. T. and Ross, D. A. Chronology of the Black Sea over the last 25,000 years. / Chem. Geol., 1972. — 10. — Р. 1—16.

5. Dimitrov D. Geology and Non-traditional resources of the Black Sea. LAP (Lambert Academic Publishing AG). ISBN 978-3-8383-8639-3, 2010. — 244 p.

6. Dimitrov, P. The submerged ancient shores of the Black Sea. / Nature Magazine, book 4, S., 1978. — РР. 55—59; РР. 55—59. (in Bulgarian).

7. Dimitrov, P. Radiocarbon dating of benthic sediments from the Bulgarian Black Sea shelf. Oceanology, 9, Bulg. Academy of Science, S., 1982. — Р. 45—53. (in Bulgarian)

8. Dimitrov, P. Geological history of the western part of the Black Sea during the Quaternary and conditions for the formation of mineral resources. / Habilitation paper, 1990. — 257 p. (in Bulgarian).

9. Dimitrov, P., D. Dimitrov The Black Sea, the flood and the ancient myths. «Slavena», Varna, ISBN 594-579-335-X, 2004. — 91 p.

10. Dimitrov, P., L. Govberg. New data of the Pleistocene terraces and the paleography of the Bulgarian Black Sea shelf. / Geomorphology, 1979. — 2. — 81—89. (in Russian).

11. Fedorov, P. V. Pleistocene Ponto — Caspian. M.: Science. 1978. — Р. 31—43. (in Russian).

12. Filipova, M, E. Bozhilova, P. Dimitrov Palynological and stratigraphic data of the Quaternary period of the southern Bulgarian Black Sea shelf. / Oceanology 11, S., 1983. —1622 р. (in Russian).

13. Filipova-Marinova, M. Paleoenvironmental changes along Southern Black Sea coast of Bulgaria during the last 29 000 years. / Phitologia balcanica, 9 (2), Sofia, 2003. — Р. 275—293.

14. Geology and hydrology of the western Black Sea, 1979, Sofia.: Published by BAS. — 292 р. (in Russian).

15. Jones, G., A. Gagnon Radiocarbon Chronology of black sea sediments. Deep-Sea Research I, 1994. — Vol. 41. — №.3. — Р. 531—557.

16. Jouse, A.P., V.V. Mukhina Diatom units and the paleogeography of the Black sea in the late cenosoic. Initial Reports of the DSDP. Washington, 1978. — Р. 903—950.

17. Khristchev, H.G., S.D. Chochov, V. Shopov, D. Yankova Lithostratigraphy of lithofacies features of the Upper Quaternary deep sea sediments of the western Black Sea depression. / Geol. Balc., 1988. — 18. — 2. — Р. 3—17. (in Russian).

18. Khristchev Kh., V. Shopov. Quaternary stratirgaphy of the outer South Bulgarian Black Sea Shelf. / Geol. Balc. 1978. — 8. — 2. — Р. 21—40.

19. Khristchev, H.G., V.L. Shopov Marine Pleistocene of the Bay of Burgas and problems of the relations between the Uzunlarian and the Karangatian layers. / Geol. Balc., 1979. — 9. — 2. — Р. 69—94. (in Russian).

20. Komarov, A. Statigraphy of the native clays on the continental slope of the Black Sea according to palynological data. / Oceanology M., 1978. — 18. — 1. — Р. 70—79. (in Russian)

21. Koreneva E. V., G. G. Kartashova Palynological study of samples. From holes 379a, 380a. Rep. of DSDP. Washington, 1978. — Р. 951—992.

22. Olshtinskaya, A. Diatomaceous flora of the benthic deposits of the Black Sea. / Geol. Zhurnal, 1996. — № 1—2. — Р. 193—198. (in Russian).

23. Semenenko, V., E. Koyumdzhieva, N. Kovalyuh Н Absolute age by C14 dating and correlation of marine Upper Pleistocene sediments of the Ukrainian USSR and the People's Republic of Bulgaria. Quaternary period., 1976. — 16. — Р. 97—102. (in Russian).

24. Shimkus, K.M. et al. Stratigraphy of Quaternary sediments, 1976. (in Russian).

25. Shterbakov F.A. et al. Sediment accumulation on the continental border in the periphery of the Black Sea. М., Science, 1978. — 210. (in Russian).

26. Slavova, K. About local calibration curve of the Black sea during the period 18000—3000 calendar years BP. / C. R. Acad. bulg. Sci., 2002. — 55. — Р. 61—66.

27. Ross, D.A., E.T. Degens Recent sediments of Black Sea. In: The Black Sea — Geology, Chemistry and Biology. Tulsa, Oklahoma, USA, Am. Assoc. Petrol. Geol., 1974. — Р. 183—199.

28. Ross, D.A., Y.P. Neprochnov Initial Reports of the Deep Sea Drilling Project, 1978. — Volume 42. — Part 2.

29. Ryan, W., W. Pitman Noah's Flood, SIMON&SHUSTER, New York, 1998. — 319 р.

30. Zubakov, V., V. Kochegura Chronology of the newest stage of geological history of the USSR. In: Chronology of the Pleistocene and climate stratigraphy. M., Science, 1973. — Р. 74—91. (in Russian).