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- Title
Anoxia in waters of the Maikop paleobasin (Tethys Ocean, Azeri sector), with implications for the modern Caspian Sea.
- Authors
Efendiyeva, M. A.
- Abstract
Anoxic conditions and contamination of the water column by hydrogen sulfide can be observed in several areas of the world ocean, particularly in intra- continental basins like the Black Sea. Study of the geologic, geochemical and paleontological features of the Tertiary Maikop paleobasin of the Tethys Ocean, which at its maximum development covered a large area from the Carpathians to western Turkmenistan and included part of the modern territory of Azerbaijan, shows that the processes taking place currently in some intracontinental basins like the Black Sea were also typical for some areas of this paleo-ocean. The development of anoxic environments and contamination by H25 in this basin depended upon many parameters, including basin closure, the quantity and type of organic matter deposited, complexities of the water cycle, and a strongly reducing environment. Characteristics of Maikop deposits indicate some similarities between anoxic conditions and mass mortalities in the Maikop paleobasin and in parts of the modern Caspian Sea, suggesting potential dangers for the latter.
- Subjects
CASPIAN Sea; HYPOXEMIA; OCEAN; GEOLOGICAL basins; GEOLOGY; HYDROLOGIC cycle
- Publication
Geo-Marine Letters, 2004, Vol 24, Issue 3, p177
- ISSN
0276-0460
- Publication type
Article
- DOI
10.1007/s00367-004-0173-2