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Journal of African earth sciences v.139, 2018년, pp.367 - 378   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Depositional architecture and sequence stratigraphy of the Upper Jurassic Hanifa Formation, central Saudi Arabia

El-Sorogy, Abdelbaset (Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia ) ; Al-Kahtany, Khaled (Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia ) ; Almadani, Sattam (Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia ) ; Tawfik, Mohamed (Geology Department, Faculty of Science, Zagazig University, Egypt ) ;
  • 초록  

    Abstract To document the depositional architecture and sequence stratigraphy of the Upper Jurassic Hanifa Formation in central Saudi Arabia, three composite sections were examined, measured and thin section analysed at Al-Abakkayn, Sadous and Maashabah mountains. Fourteen microfacies types were identified, from wackestones to boundstones and which permits the recognition of five lithofacies associations in a carbonate platform. Lithofacies associations range from low energy, sponges, foraminifers and bioclastic burrowed offshoal deposits to moderate lithoclstic, peloidal and bioclastic foreshoal deposits in the lower part of the Hanifa while the upper part is dominated by corals, ooidal and peloidal high energy shoal deposits to moderate to low energy peloidal, stromatoporoids and other bioclastics back shoal deposits. The studied Hanifa Formation exhibits an obvious cyclicity, distinguishing from vertical variations in lithofacies types. These microfacies types are arranged in two third order sequences, the first sequence is equivalent to the lower part of the Hanifa Formation (Hawtah member) while the second one is equivalent to the upper part (Ulayyah member). Within these two sequences, there are three to six fourth-order high frequency sequences respectively in the studied sections. Highlights The present work deals architecture and sequence stratigraphy of the Hanifa Formation in central Saudi Arabia. Fourteen facies types and five lithofacies associations were identified in a carbonate platform. The lithofacies types are arranged in two third order sequences. The first sequence is equivalent to Hawtah member, while the second sequence is equivalent to Ulayyah member.


  • 주제어

    Oxfordian .   Hanifa Formation .   Saudi Arabia .   Lithofacies analysis .   Cyclicity .   Sequence stratigraphy.  

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