Could the conventionally known Abu Roash “G” reservoir (upper Cenomanian) be a promising active hydrocarbon source in the extreme northwestern part of Egypt? Palynofacies, palaeoenvironmental, and organic geochemical answers

Tahoun, Sameh S.; Deaf, Amr S.

doi:10.1016/j.marpetgeo.2016.05.025

Cited by 28 publications

(26 citation statements)

References 38 publications

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“…The equidimensional opaque particles exhibit higher percentages than the lath-shaped opaque debris. These parameters markedly reflect the same above-mentioned scenario based on hydrodynamic equivalence of the micro-fragment woody particles and strongly suggest deposition in shallower proximal inner neritic environment (Tyson, 1995;Pittet and Gorin, 1997;Tahoun and Deaf, 2016;Tahoun et al, 2017;Mansour et al, 2018).…”

Section: Distal Inner Neritic Environmentsupporting

confidence: 69%

“…kahramanensis and D. ghazalataensis are not documented in the current study. In addition, Tahoun (2012) and Tahoun and Deaf (2016) identified the same gymnosperm marker taxon C. brasiliensis and presumed a late Cenomanian age for the Abu Roash "G" Member from the Abu Gharadig Basin and Matruh Basin in the extreme northern region of the Western Desert, Egypt, respectively.…”

Section: Diagnosismentioning

confidence: 99%

“…Both the composition of POM and its distribution are controlled by the influence of ecological and sedimentological processes within the physical environment. The compositional change of POM indicates significant information for palaeoenvironmental interpretation in terms of transgressive-regressive trends and relative sea-level changes (Harker et al, 1990;Tyson, 1995;Batten, 1996;Pittet and Gorin, 1997;Tahoun and Deaf, 2016;Mansour et al, 2018). The POM group is the product of compiling various factors (i.e.…”

Section: Palynofacies and Palaeoenvironmentalmentioning

confidence: 99%

“…Lawal and Moullade, 1986), and northern Europe. During this time interval, the Neo-Tethyan transgression event inundated the cratonic areas in northern and central parts of Egypt (El Beialy et al, 2010Tahoun and Deaf, 2016;Mansour et al, 2018), North-Central Spain (Floquet, 1998;Peyrot et al, 2011), the Czech Republic (Čech, 2005) and northern Europe (Olde et al, 2015), mainly driven by tectonic forces and eustasy (Haq, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Previous palynological studies on the Cenomanian successions in Egypt have been carried out mostly in the northern region of the Western Desert (e.g. Aboul Ela and Mahrous, 1992;El Shamma and Arafa, 1992;Schrank and Ibrahim, 1995;Mahmoud and Moawad, 2000;El Beialy et al, 2010Tahoun, 2012;Tahoun and Mohamed, 2013;Tahoun et al, , 2015Tahoun and Deaf, 2016). On the other hand, those that have focussed on the Cretaceous period of the Gulf of Suez include only the study by Mahmoud et al (2007).…”

Section: Introductionmentioning

confidence: 99%

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Palynology of the Cenomanian Raha Formation, Gulf of Suez, Egypt: Biostratigraphical, palaeoenvironmental and palaeobiogeographical implications

Mohamed

Mansour

Tahoun

et al. 2018

Austrian Journal of Earth Sciences

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The current study presents a fully qualitative palynological investigation carried out on the Raha Formation encountered from three wells in the Bakr Oil Field of the Gulf of Suez, Egypt. Around 30 species of pteridophytic spores, 26 species of angiosperm pollen, 24 species of gymnosperm pollen and 27 species of dinoflagellate cysts have been recorded. However, achritarchs, microforaminiferal test linings and freshwater algae are impoverished and sparsely documented throughout the Raha Formation. Two palynozones have been identified based on some stratigraphically significant pollen and spores, arranged from youngest to oldest: (1) Palynozone I (Classopollis brasiliensis–Tricolpites sagax Assemblage Zone) of late Cenomanian age; (2) Palynozone II (Afropollis jardinus–Crybelosporites pannuceus Assemblage Zone) of early-middle Cenomanian age. The distribution and ecological affiliation of specific palynomorph species, as well as various palynofacies parameters, are interpreted. A shallow marine environment from supratidal to distal inner neritic under proximal suboxic–anoxic to dysoxic–anoxic shelf conditions is reconstructed. Palaeobiogeographically, the absence of elaters from the recovered taxa is interpreted in terms of minor floral variation. This may be attributed to climatic and/or an environment-controlled niche establishment, which possibly was shaped by the existence of a physical barrier hindering the distribution of such type of elaterate parent plants.

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Section: Distal Inner Neritic Environmentsupporting

confidence: 69%

Section: Diagnosismentioning

confidence: 99%

Section: Palynofacies and Palaeoenvironmentalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Palynology of the Cenomanian Raha Formation, Gulf of Suez, Egypt: Biostratigraphical, palaeoenvironmental and palaeobiogeographical implications

Mohamed

Mansour

Tahoun

et al. 2018

Austrian Journal of Earth Sciences

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Petroleum generation modelling of theMiddle‐LateCretaceous sediments in the Abu Gharadig Field, Northwestern Desert, Egypt

et al. 2022

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The present work introduces an integral study concerning the Middle‐Late Cretaceous source rocks in Abu Gharadig (AG) Field utilizing source rock evaluation techniques and hydrocarbon generation modelling. The used methods include TOC%, Rock‐Eval pyrolysis, vitrinite reflectance (Ro%), and 1D basin modelling data. Our results show that most of the studied marine Middle‐Late Cretaceous intervals in AG Field are considerable as source rocks, excluding the Abu Roash A‐D members. The Kharita, Bahariya, and Abu Roash E & G intervals have mainly gas‐prone kerogen. The Abu Roash F and Khoman B members contain mixed kerogen type II/III with oil/gas‐prone generative potential. Khoman A member has marine type II kerogen with mainly oil‐ and minor gas‐prone generative potential. Among the Middle‐Late Cretaceous rock units, the Khoman Formation is either immature or early mature, whereas others are mature enough to generate hydrocarbons. The burial history models typify a high subsidence rate during the deposition of Kharita, Bahariya, and Abu Roash formations in response to the Tethyan rifting phase. The timing of the peak of oil generation window for the Abu Roash G interval is ranged as Late Oligocene‐Early Pliocene time. Moreover, the timing of the peak of oil generation for the Abu Roash F interval is ranged as Early Miocene‐Latest Miocene. Based on transformation ratios (TR), the Abu Roash F member demonstrates a limited hydrocarbon expulsion (25% > TR <50), whereas both Abu Roash G and Khoman B members can generate in‐situ hydrocarbon (TR ≤10%). Compiling data along the AG basin from previous works infers that there are spatial and temporal discrepancies in organics composition and thermal maturity of the Middle‐Late Cretaceous intervals. Changes in paleoclimate, eustatic, and basin tectonics can be considered as the primary drivers that triggered such spatiotemporal variation. Integrated approaches are needed to constrain the multi‐geospheric interactions of major Cretaceous anoxic events in the Northwestern Desert of Egypt, and to explore the driving forces on these organics‐accumulating events.

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Organic source of crude oils and 1D basin modeling of upper Cretaceous rocks, Badr Concession, Abu Gharadig Basin, Western Desert, Egypt

2018

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Could the conventionally known Abu Roash “G” reservoir (upper Cenomanian) be a promising active hydrocarbon source in the extreme northwestern part of Egypt? Palynofacies, palaeoenvironmental, and organic geochemical answers

Cited by 28 publications

References 38 publications

Palynology of the Cenomanian Raha Formation, Gulf of Suez, Egypt: Biostratigraphical, palaeoenvironmental and palaeobiogeographical implications

Palynology of the Cenomanian Raha Formation, Gulf of Suez, Egypt: Biostratigraphical, palaeoenvironmental and palaeobiogeographical implications

Petroleum generation modelling of theMiddle‐LateCretaceous sediments in the Abu Gharadig Field, Northwestern Desert, Egypt

Organic source of crude oils and 1D basin modeling of upper Cretaceous rocks, Badr Concession, Abu Gharadig Basin, Western Desert, Egypt

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