کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4747315 | 1359902 | 2012 | 16 صفحه PDF | دانلود رایگان |

The first detailed biostratigraphic analyses of the Coniacian–middle Campanian shallow-marine carbonate successions exposed in the Mitla Pass, west central Sinai, Egypt have revealed the stratigraphic distribution of diverse calcareous nannofossil and planktonic foraminiferal species. Thirty-six calcareous nannofossils and thirty-two planktonic foraminifera are identified, indicating a Coniacian to middle Campanian age and four Tethyan planktonic foraminiferal and five calcareous nannofossil zones. A comparison of these bioevents from different palaeolatitudes shows considerable variation in age.Three sequence boundaries coincident with the Turonian/Coniacian, Coniacian/Santonian and Santonian/Campanian stage boundaries are recognized. A fourth sequence boundary is marked by a major upper Campanian to early Ypresian (early Eocene) unconformity. These sequence boundaries are primarily related to regional tectonism associated with the Syrian Arc Fold System and secondarily to eustatic sea-level fluctuations.
► We examine the Coniacian--middle Campanian succession of the Gebel Mitla section.
► 31 planktonic foraminiferal and 39 calcareous nannofossil species were identified.
► 4 Tethyan planktonic foraminiferal and 5 calcareous nannofossil zones are recorded.
► Some bioevents has revealed variations in the stratigraphic ranges.
Journal: Cretaceous Research - Volume 33, Issue 1, February 2012, Pages 50–65