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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Black Sea region (1)
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Commonwealth of Independent States
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Caucasus
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Greater Caucasus (1)
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Lesser Caucasus (1)
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Georgian Republic
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Rioni Basin (1)
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Russian Federation
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Volga-Don region (1)
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Ukraine
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Crimea Ukraine (1)
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Europe
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Carpathians (1)
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Caucasus
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Greater Caucasus (1)
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Lesser Caucasus (1)
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Central Europe
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Austria
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North Austrian Molasse (1)
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Czech Republic (1)
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Hungary (1)
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Molasse Basin
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North Austrian Molasse (1)
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Poland (1)
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Georgian Republic
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Rioni Basin (1)
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Southern Europe
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Bulgaria (1)
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Romania (1)
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Ukraine
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Crimea Ukraine (1)
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Volga-Don region (1)
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Kura Lowland (1)
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commodities
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petroleum (1)
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geologic age
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Cenozoic
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Tertiary
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Maikop Series (1)
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Neogene
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Miocene
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lower Miocene (1)
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Paleogene
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Oligocene (1)
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Primary terms
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Cenozoic
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Tertiary
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Maikop Series (1)
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Neogene
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Miocene
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lower Miocene (1)
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Paleogene
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Oligocene (1)
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Europe
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Carpathians (1)
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Caucasus
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Greater Caucasus (1)
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Lesser Caucasus (1)
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Central Europe
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Austria
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North Austrian Molasse (1)
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Czech Republic (1)
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Hungary (1)
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Molasse Basin
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North Austrian Molasse (1)
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Poland (1)
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Georgian Republic
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Rioni Basin (1)
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Southern Europe
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Bulgaria (1)
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Romania (1)
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Ukraine
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Crimea Ukraine (1)
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Volga-Don region (1)
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petroleum (1)
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sedimentary rocks (1)
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stratigraphy (1)
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sedimentary rocks
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sedimentary rocks (1)
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Oligocene and Lower Miocene source rocks in the Paratethys: palaeogeographical and stratigraphic controls
Abstract Oligocene and Lower Miocene deposits in the Paratethys are important source rocks, but reveal major stratigraphic and regional differences. As a consequence of the first Paratethys isolation, source rocks with very good oil potential accumulated during Early Oligocene time in the Central Paratethys. Coeval source rocks in the Eastern Paratethys are characterized by a lower source potential. With the exception of the Carpathian Basin and the eastern Kura Basin, the source potential of Upper Oligocene and Lower Miocene units is low. In general, this is also valid for rocks formed during the second (Kozakhurian) isolation of the Eastern Paratethys. However, upwelling along a shelf-break canyon caused deposition of prolific diatomaceous source rocks in the western Black Sea. Overall, Oligocene–Lower Miocene sediments in the Carpathian Basin (Menilite Formation) can generate up to 10 t HC m −2 . Its high petroleum potential is a consequence of the interplay of very high productivity of siliceous organisms and excellent preservation in a deep silled basin. In contrast, the petroleum potential of Oligocene–Lower Miocene (Maikopian) sediments in the Eastern Paratethys is surprisingly low (often <2 t HC m −2 ). It is, therefore, questionable whether these sediments are the only source rocks in the Eastern Paratethys.