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Oligocene and Lower Miocene source rocks in the Paratethys: palaeogeographical and stratigraphic controls

By
R. F. Sachsenhofer
R. F. Sachsenhofer
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
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S. V. Popov
S. V. Popov
2
Paleontological Institute, Russian Academy of Sciences, ul. Profsoyuznaya 123, Moscow 117997, Russia
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A. Bechtel
A. Bechtel
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
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S. Coric
S. Coric
3
Geological Survey of Austria, Neulinggasse 38, 1030 Vienna, Austria
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J. Francu
J. Francu
4
Czech Geological Survey, Branch Brno, Leitnerova 22, 65869 Brno, Czech Republic
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R. Gratzer
R. Gratzer
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
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P. Grunert
P. Grunert
5
Institute for Earth Sciences, University of Graz, Heinrichstrasse 26, 8010 Graz, Austria
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M. Kotarba
M. Kotarba
6
Faculty of Geology, Geophysics and Environmental Protection, AGH-University of Science and Technology, Al. Mickiewicza 30, 30–059 Kraków, Poland
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J. Mayer
J. Mayer
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
7
OMV Exploration and Production GmbH, Trabrennstraße 6–8, 1020 Vienna, Austria
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M. Pupp
M. Pupp
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
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B. J. Rupprecht
B. J. Rupprecht
1
Chair of Petroleum Geology, Montanuniversitaet Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria
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S. J. Vincent
S. J. Vincent
8
Cambridge Arctic Shelf Programme (CASP), 181a Huntingdon Road, Cambridge CB3 0DH, UK
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Published:
January 01, 2018

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.

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Contents

Geological Society, London, Special Publications

Petroleum Geology of the Black Sea

M. D. Simmons
M. D. Simmons
Halliburton, UK
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G. C. Tari
G. C. Tari
OMV, Austria
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A. I. Okay
A. I. Okay
Eurasia Institute of Earth Sciences, Turkey
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Geological Society of London
Volume
464
ISBN electronic:
9781786203724
Publication date:
January 01, 2018

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