Lagoonal carbonate deposition preceding rifting-related uplift:evidence from the Bartonian-Priabonian(Eocene)of the northwestern Gulf of Suez(Egypt)

作     者：Emad S.Sallam Dmitry A.Ruban A.J.(Tom)Van Loon Emad S.Sallam;Dmitry A.Ruban;A.J.(Tom)Van Loon

作者机构：Department of GeologyFaculty of ScienceBen ha UniversityFarid Nad a Street 15Ben ha 13518Egypt K.G.Razumovsky Moscow State University of Technologies and Management(the First Cossack University)Zemlyanoy Val Street 73Moscow 109004Russia c College of Earth Science and EngineeringShandong University of Science and TechnologyQingdao 266590ShandongChina 

出 版 物：《Journal of Palaeogeography》 (古地理学报（英文版）)

年 卷 期：2022年第11卷第1期

页      面：8-30页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 

主　　题：Lagoonal facies Sea-level fluctuations Middle Eocene Late Eocene Eastern Desert 

摘      要：Sedimentary successions in the northwestern Gulf of Suez provide important clues to the understanding of the geological evolution of NE Africa during the middle and late *** study focuses on detailed facies analyses in order to characterize the depositional environments and system tracts of the Bartonian-Priabonian succession cropping out in this ***-Priabonian carbonate deposits in five stratigraphic sections constitute,from base to top,the Gebel Hof,Observatory,Sannur,Qurn,and Wadi Hof *** formations contain four local assemblage zones of larger benthic *** of litho-,bio-,and microfacies in the succession resulted in the recognition of 12 lithofacies *** lithofacies are represented by packages of lime-mudstones,wackestones,packstones,pack-to grainstones,grainstones,rudstones,boundstones and *** lithofacies have been grouped into four geneticallyrelated facies associations that represent,respectively,tidal flats/shallow subtidal,restricted-shelf/lagoonal,shoal bar,and outer-shelf lagoon/reefal depositional environments in a downslope shallow-marine inner-ramp *** vertical transitions of these facies associations,representing facies changes through time,imply fluctuations of the regional sea *** two peaks in the Bartonian correspond to well-known global eustatic sea-level rises;the pronounced Priabonian regression must be ascribed to the known global eustatic sea-level fall in combination with regional tectonic *** facies distribution suggests that the study area was located in the direct vicinity of some islands during the Bartonian-Priabonian.