GSTDTAP  > 地球科学
DOI10.1306/08051616027
The type section of the Maikop Group (Oligocene-lower Miocene) at the Belaya River (North Caucasus): Depositional environment and hydrocarbon potential
Sachsenhofer, Reinhard F.1; Popov, Sergey V.2; Akhmetiev, Mikhail A.3; Bechtel, Achim1; Gratzer, Reinhard1; Gross, Doris1; Horsfield, Brian4; Rachetti, Alessandra5; Rupprecht, Bernhard1; Schaffar, Wolfgang B. H.1; Zaporozhets, Nina I.3
2017-03-01
发表期刊AAPG BULLETIN
ISSN0149-1423
EISSN1558-9153
出版年2017
卷号101期号:3
文章类型Article
语种英语
国家Austria; Russia; Germany
英文摘要

The type section of the Oligocene to lower Miocene Maikop Group, considered themain source rock in the eastern Paratethys, has been studied using geochemical proxies to gain insights into depositional setting and hydrocarbon potential. The Maikop Group at the type section is approximately 600 m (2000 ft) thick. Deposition commenced after a major late Eocene sea level drop and a subsequent early Oligocene sea level rise. The Maikop Group is composed mainly of carbonate-free pelitic rocks. Calcareous rocks are limited to the lower Oligocene succession, including the Polbian Bed that forms a basin-wide marker horizon deposited during a time with significantly decreased salinity (Solenovian event). Anoxic conditions prevailed and were only interrupted for longer periods during deposition of the lower part of the lower Oligocene Pshekha Formation, the Polbian Bed, and the lower Miocene Olginskaya Formation. Total organic carbon (TOC) contents range up to 3.5 wt. %. Hydrogen index values are typically less than 300 mg hydrocarbons (HC)/g TOC but reach 420 mg HC/g TOC in black shales overlying the Polbian Bed (lower Morozkina Balka Formation). Organic richness of this level, approximately 10 m (33 ft) thick, is controlled by low salinity and high bioproductivity. The Maikop Group could generate approximately 2.0 t HC/m(2) surface area. A significant part (0.45 t/m(2)) comes from the lower Morozkina Balka Formation, which generates a high-wax paraffinic-naphthenic- aromatic mixed oil. The Pshekha, upper Morozkina Balka, and Batalpashinsk Formations would generate low-wax oil or condensate. The hydrocarbon generation potential of the overlying formations is minor. Overall, the generation potential of the Maikop Group is surprisingly low.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000396838800001
WOS关键词ORGANIC-MATTER ; SOURCE ROCKS ; ISOTOPIC FRACTIONATION ; ISOPRENOID THIOPHENES ; EASTERN AZERBAIJAN ; PETROLEUM SYSTEM ; MOLASSE BASIN ; MAYKOP SERIES ; CARBON ; PARATETHYS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/24472
专题地球科学
作者单位1.Univ Leoben, Chair Petr Geol, Dept Appl Geosci & Geophys, Peter Tunner Str 5, A-8700 Leoben, Austria;
2.Russian Acad Sci, Inst Paleontol, Ul Profsoyuznaya 123, Moscow, Russia;
3.Russian Acad Sci, Inst Geol, Pyzhevskii Per 7, Moscow 119017, Russia;
4.Geoforschungszentrum Potsdam, Sect 4 3, B 424, D-14473 Potsdam, Germany;
5.Univ Leoben, Dept Gen & Analyt Chem, Franz Josef Str 18, A-8700 Leoben, Austria
推荐引用方式
GB/T 7714
Sachsenhofer, Reinhard F.,Popov, Sergey V.,Akhmetiev, Mikhail A.,et al. The type section of the Maikop Group (Oligocene-lower Miocene) at the Belaya River (North Caucasus): Depositional environment and hydrocarbon potential[J]. AAPG BULLETIN,2017,101(3).
APA Sachsenhofer, Reinhard F..,Popov, Sergey V..,Akhmetiev, Mikhail A..,Bechtel, Achim.,Gratzer, Reinhard.,...&Zaporozhets, Nina I..(2017).The type section of the Maikop Group (Oligocene-lower Miocene) at the Belaya River (North Caucasus): Depositional environment and hydrocarbon potential.AAPG BULLETIN,101(3).
MLA Sachsenhofer, Reinhard F.,et al."The type section of the Maikop Group (Oligocene-lower Miocene) at the Belaya River (North Caucasus): Depositional environment and hydrocarbon potential".AAPG BULLETIN 101.3(2017).
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