Upper Cretaceous stratigraphy of the Gebel Somar area, north-central Sinai, Egypt

Samuel, M.D.; Ismail, Ahmed Aly; Akarish, Adel I. M.; Zaky, Amir H.

doi:10.1016/j.cretres.2007.12.001

Cited by 20 publications

(8 citation statements)

References 13 publications

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“…Basement Unknown Feldspathic gneisses intruded by unmetamorphosed sills and dikes. * Garfunkel and Bartov (1977); Sellwood and Netherwood (1984); Schutz (1994); El Azabi and El Araby (2007); Samuel et al (2009). R1 and R2-are distinguished (Fig. 3).…”

Section: Stratigraphy and Sedimentary Processmentioning

confidence: 96%

Submarine slope processes in rift-margin basins, Miocene Suez Rift, Egypt

Strachan¹,

Rarity²,

Gawthorpe³

et al. 2012

Geological Society of America Bulletin

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Section: Stratigraphy and Sedimentary Processmentioning

confidence: 96%

Submarine slope processes in rift-margin basins, Miocene Suez Rift, Egypt

Strachan¹,

Rarity²,

Gawthorpe³

et al. 2012

Geological Society of America Bulletin

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“…It is important to denote that evidences of tectonic uplift are also recorded in several localities in Sinai and it falls within the foraminiferal zones G. ventricosa and Gansserina gansseri zone (CF8) as recorded by Lüniing et al [20]. In Gabal Somar, west central Sinai, uplift may have begun earlier as indicated by the absence of the entire Campanian succession [10], where the magnitude of hiatus was greater as indicated by the absence of the Upper Campanian up to Early Eocene (Ypresian) succession [44].…”

Section: Biostratigraphymentioning

confidence: 87%

“…It is consequently represented by persisting facies almost all over North Sinai such as chalk, chalky limestone or even argillaceous limestone. It is dated Campanian-Maastrichtian as well documented and accepted by many authors [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 97%

Characterization of the Campanian-Maastrichtian Sudr Chalk, Gabal El Bruk, North Sinai, Egypt

Hassan

Abouelresh

2016

Journal of Petroleum and Mining Engineering

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The Campanaian-Maastrichtian Sudr Chalk of Gabal El Bruk subdivided into two members, the lower Markha and the upper Abu Zemina members. Nine biostratigraphic zones (CF13-CF2) have been identified from the planktonic foraminiferal content. The qualitative and semi-quantitative analysis of the foraminiferal parameters revealed the predominance of Midway type fauna over the Velasco type fauna in the Campanian indicating that the Sudr Chalk was deposited on the continental shelf. The benthonic fauna show an intermediate value between Velasco-type fauna and Midway type fauna indicating an increase in water depth from the continental shelf during the Campanian to lower slope during the Maastrichtian time. Two microfacies associations have been identified from the petrographic analysis of the Sudr Chalk in the study area. Foraminiferal micrite (wackstone) and fossiliferous mudstone (mudstone) revealing the deepening upward from Markha to Abu zenima member.The study area was affected by both sea level fluctuations as well as tectonic instability due to the Syrian arc system from Middle Campanian upward. The total organic carbon (TOC) ranges between 0 to 3.8 %. This variation is controlled by lithology, faunal content, sedimentation rate as well as depositional environmental conditions. There are three intervals of maximum TOC within the studied Sudr Chalk which indicates a fair to good source rock (CF2, CF5+CF6 and CF12).

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“…The paleontological aspects of the Upper Cretaceous-Lower Paleogene in north east Sinai have been the subject of several studies [1]- [31] because of its relative richness in microfossils and expanded stratigraphic records. The published data on the calcareous nannofossil biostratigraphy in northeastern Sinai are scarce.…”

Section: Introductionmentioning

confidence: 99%

Calcareous Nannofossil Biostratigraphy and Stage Boundaries of the Santonian-Eocene Successions in Wadi El Mizeira Northeastern Sinai, Egypt

Khalil¹,

Zahran²

2014

IJG

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The stratigraphic successions exposed in Wadi El Mizeira have been dated through the analysis of the calcareous nannofossil assemblages. The results of this study indicate that the successions comprise the Santonian-Late Maastrichtian (Sudr Formation), the Paleocene (Esna Formation) and the Early Eocene (Thebes Formation). The following biozones were recognized: Late Santonian, CC16 Zone; Late Santonian/Early Campanian, CC17 Zone; Early Campanian, Aspidolithus parcus Zone (CC18) Zone; Late Maastrichtian, CC25c Zone; Early Paleocene (Late Danian), NP3 Zone and NP4 Zone; Late Paleocene (Thanethian-Selandian), NP5 Zone; Early Eocene, NP9b Zone, NP10a Zone, NP11 Zone, NP12 Zone and NP14 Zone. Several stratigraphic hiatus were recorded in the studied interval including the absence of Cretaceous nannofossil Zones CC19 to CC25b and CC26 as well as the early Paleocene Zones NP1 and NP2 and probably the basal part of Zone NP3, in addition to the absence of the Zones NP6 and NP7/8. These hiatus may be attributed to environmental conditions, structural activity and/or post depositional processes. This work represents the first attempt to evaluate the nannofossil taxa of the Wadi El Mizeira, Northeastern Sinai.

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Upper Cretaceous stratigraphy of the Gebel Somar area, north-central Sinai, Egypt

Cited by 20 publications

References 13 publications

Submarine slope processes in rift-margin basins, Miocene Suez Rift, Egypt

Submarine slope processes in rift-margin basins, Miocene Suez Rift, Egypt

Characterization of the Campanian-Maastrichtian Sudr Chalk, Gabal El Bruk, North Sinai, Egypt

Calcareous Nannofossil Biostratigraphy and Stage Boundaries of the Santonian-Eocene Successions in Wadi El Mizeira Northeastern Sinai, Egypt

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