Petroleum geology of the Black Sea

Robinson, Andrew; Rudat, John H.; Banks, Christopher J.; Wiles, Roy

doi:10.1016/0264-8172(95)00042-9

Cited by 245 publications

(210 citation statements)

References 17 publications

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“…We have no explanation for this finding; a possible reason why this CH 4[S] is not radiocarbon-free is that CH 4 , generated from late Eocene source rock [53], acquires CH 4 with modern radiocarbon contents during transit through recently deposited sediments. Gulin et al [8] indirectly estimated the radiocarbon content of Black Sea CH 4[S] assuming that carbonate in structures formed around CH 4 seeps [10] is formed from a mixture of seawater bicarbonate and the product of AOM.…”

Section: Introductionmentioning

confidence: 99%

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Kessler

Reeburgh

Southon

et al. 2006

Earth and Planetary Science Letters

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Numerous methane-emitting bottom features, such as seeps, methane clathrate hydrates (clathrates), and mud volcanoes, have been identified recently in the Black Sea. The fluxes of methane from these sources averaged over large spatial scales are unknown. Here we take advantage of the fact that the Black Sea is a semi-enclosed basin with restricted deep water circulation to establish firstorder estimates of basin-wide fluxes of methane from these sources to the water column and atmosphere. First, we measured the natural radiocarbon content of methane ( 14 C-CH 4 ) dissolved in the water column and emitted from seeps. The 14 C-CH 4 results showed that the dominant source of methane to the water column is emitted from seeps and a smaller source is diagenetically produced in relatively modern sediments. The 14 C-CH 4 results were then used to partition a basin-wide total methane budget; this analysis estimated the basin-wide flux of methane from seeps and clathrates to the water column to be 3.60 to 4.28 Tg yr − 1 . Second, a geochemical box model was used to calculate possible distributions of methane inputs from seeps and clathrates as well as provide additional estimates of the basin-wide flux of methane from seeps and clathrates to the water column (4.95 to 5.65 Tg yr − 1 ).

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Section: Introductionmentioning

confidence: 99%

Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea

Kessler

Reeburgh

Southon

et al. 2006

Earth and Planetary Science Letters

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“…Such a zone is most likely caused by low permeability and high pore fluid pressures, which maintain the porosity well above the value for normally compacting sediments.The acoustic basement in the basin is commonly interpreted to be formed from Upper Jurassic to Lower Cretaceous platform carbonates and Upper Cretaceous volcaniclastic and volcanic rocks, all of which outcrop onthe margins of the basin [ Robinson et al, 1996].…”

Section: Initial Resultsmentioning

confidence: 99%

“…The present study focuses on the eastern basin, where the main rifting event has been VOLUME interpreted by different authors to be as young as Paleocene or as old as Jurassic [Robinson et al, 1996;Golmshtok et al, 1992, and references therein].Although sediments in the eastern basin that formed during rifting are sparse, previous seismic research [Belousov et al, 1988] suggests a post-rift sediment thickness of up to ~11 km.The basin has many similarities to the oil-rich South Caspian Basin, including the same Oligocene-Miocene Maykop source rock, and ongoing hydrocarbon exploration has led to very extensive seismic refl ection coverage.…”

Section: The Eastern Black Sea Basinmentioning

confidence: 91%

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Seismic data reveal eastern Black Sea basin structure

et al. 2005

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Rifted continental margins are formed by progressive extension of the lithosphere. The development of these margins plays an integral role in the plate tectonic cycle, and an understanding of the extensional process underpins much hydrocarbon exploration. A key issue is whether the lithosphere extends uniformly, or whether extension varies with depth. Crustal extension may be determined using seismic techniques. Lithospheric extension may be inferred from the waterloaded subsidence history, determined from the pattern of sedimentation during and after rifting. Unfortunately, however, many rifted margins are sediment‐starved, so the subsidence history is poorly known.

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“…Certainly, the limestones and dolomites of the Malm-Valanginian constitute a deposit of gas and hydrocarbons that forms part of one of the first-known petroleum provinces in the world. These resources are exploited and investigated in the petroleum field of Tyulenovo (Robinson et al, 1996).…”

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confidence: 99%