Petroleum geochemistry of oil and gas from Barbados: Implications for distribution of Cretaceous source rocks and regional petroleum prospectivity

Hill, Ronald J.; Schenk, Christopher J.

doi:10.1016/j.marpetgeo.2005.05.003

Cited by 18 publications

(8 citation statements)

References 43 publications

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“…As a consequence, these starved basins show relatively deep bathymetry compared to the surrounding basins (Figs 8,9). Finally, the Orinoco turbidite develops very far in the turbidite systems is crucial in terms of hydrocarbon exploration because they are prone to correspond to good reservoir, as well-illustrated by the oil which is produced since decades in these types of Eocene deposits in the Woodbourne field, offshore Barbados Island (Hill and Schenk, 2005). The characteristics of turbidite deposits which are deformed within the Barbados accretionary prism are well-evidenced onshore Barbados Island, notably along the outcrops of the crest of Chalky Mount (Senn, 1940;Speed, 1983, 1984;Larue and Provine, 1988;Biju-Duval et al, 1985;Deville and Mascle, 2012;figs.…”

Section: Geological Settingmentioning

confidence: 99%

Tectonics and sedimentation interactions in the east Caribbean subduction zone: An overview from the Orinoco delta and the Barbados accretionary prism

Deville

Mascle

Callec

et al. 2015

Marine and Petroleum Geology

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Several marine geophysical data and piston-coring surveys acquired during the last decade allow one to better understand the close dynamic interactions between the sand-rich Orinoco turbidite system and the compressional structures of the Barbados prism. These interactions have been active since Eocene time as illustrated by the study of outcrops onshore Barbados Island. Because of strong morphologic and tectonic control in the east-Caribbean active margin, the present-day Orinoco turbiditic pattern system does not exhibit a classic fan geometry. The sea-floor geometry between the slope of the front of the Barbados prism and the slope of the South-American margin induces the convergence of the turbidite channels toward the abyssal plain, at the front of the accretionary prism. Also, whereas in most passive margins the turbidite systems are organized upstream to downstream as canyon, channel-levee and lobes, here, due to the tectonic control, the sedimentary system is organized upstream to downstream as channel-levee, canyons and channelized lobes. Indeed, at the edge of the Orinoco platform, the system has multiple sources with several distributaries and downstream the channel courses are complex with frequent convergences or divergences that are emphasized by the effects of the undulating seafloor tectonic morphologies associated with active thrust tectonics and mud volcanism. On top of the accretionary prism, turbidite sediments are filling transported piggy-back basins whose timing of sedimentation vs. deformation is complex. While erosion processes are almost absent on the highly subsiding Orinoco platform and in the upper part of the turbidite system, they develop mostly between 2000 and 4000 m of water depth, above the compressional structures of the Barbados prism (canyons up to 3 km wide and 300 m deep). In the abyssal plain, the main turbiditic channel develops toward the east and connects with the Vidal mid-Atlantic channel. The sediments transported in this channel are filling several elongated basins linked with fracture zones (notably the Barracuda Basin), and finally end their course in the Puerto-Rico trench, the deepest morphologic depression of the region. Piston-cores have demonstrated that turbidite sediments above the Highlights ► An overview of the nature and architecture of the Orinoco turbidite system is proposed. ► We discuss how the active margin tectonic processes control the turbidite system. ► We discuss the specificity compared with turbidite systems in passive margins. ► Deep-marine erosion processes and sediments transport are described. ► A numerical model is proposed and compared with the actual sedimentary system.

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Section: Geological Settingmentioning

confidence: 99%

Tectonics and sedimentation interactions in the east Caribbean subduction zone: An overview from the Orinoco delta and the Barbados accretionary prism

Deville

Mascle

Callec

et al. 2015

Marine and Petroleum Geology

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“…The evolution of the Cretaceous passive margin north of the South American plate is the key to understanding the region's hydrocarbon potential, because all of the known source rocks for oils and gas in the region are linked to the organic-rich units in the upper Cretaceous carbonate passive margin section (James, 1990;Pindell, 1991;Persad et al, 1993;Algar, 1998;Hill and Schenk, 2005). Fig.…”

Section: Controls Of the Fault Families On Basin Shape And Structuralmentioning

confidence: 99%

Regional structure and tectonic history of the obliquely colliding Columbus foreland basin, offshore Trinidad and Venezuela

Garciacaro¹,

Mann²,

Escalona³

2011

Marine and Petroleum Geology

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“…followed by H 2 S migration. For example, BSR in lower-temperature reservoirs (<80°C) can enrich the total sulfur content of oil (Hill and Schenk, 2005;Peters et al, 2005) and potentially form organic LSC that will be reactive when the oil reaches the temperature regime of TSR (>110°C).…”

Section: Geochemical Implicationsmentioning

confidence: 99%

The role of labile sulfur compounds in thermochemical sulfate reduction

Amrani

Zhang

et al. 2008

Geochimica et Cosmochimica Acta

112

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Petroleum geochemistry of oil and gas from Barbados: Implications for distribution of Cretaceous source rocks and regional petroleum prospectivity

Cited by 18 publications

References 43 publications

Tectonics and sedimentation interactions in the east Caribbean subduction zone: An overview from the Orinoco delta and the Barbados accretionary prism

Tectonics and sedimentation interactions in the east Caribbean subduction zone: An overview from the Orinoco delta and the Barbados accretionary prism

Regional structure and tectonic history of the obliquely colliding Columbus foreland basin, offshore Trinidad and Venezuela

The role of labile sulfur compounds in thermochemical sulfate reduction

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