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middle eocene carbonate in bahariya depression

Mineralogical and geochemical investigations of the Middle ...

sition and geochemical characteristics of the different Middle Eocene marine ironstone facies of El Bahariya Depression, Western Desert, Egypt. It also sheds light on the syn- and post-Middle Eocene subaerial weathering and subsurface alteration events that affected the original marine ironstones. 2. Geologic setting El Bahariya Depression is a ...

Microbially-mediated ooidal Ironstones, El Bahariya ...

Microbially-mediated ooidal Ironstones, El Bahariya Depression, Egypt: Amazon.es: Walid Salama: Libros en idiomas extranjeros

(PDF) Mineral evolution and processes of ferruginous ...

Peritidal ferruginous microbialites form the main bulk of the Middle Eocene ironstone deposits of the Bahariya Depression, Western Desert, Egypt. They include ferruginous stromatolites and microbially coated grains (ferruginous oncoids and ooids).

Microbially-mediated ooidal Ironstones, El Bahariya ...

Buy Microbially-mediated ooidal Ironstones, El Bahariya Depression, Egypt: Sedimentology, Mineralogy and Geochemistry by online on Amazon.ae at best prices. Fast and free shipping free returns cash on delivery available on eligible purchase.

middle eocene carbonate in bahariya depression

OCCURRENCE OF BARITE MINERALIZATION IN Bahariya depression, Western Desert of Egypt. The barite veins that trend in different directions are rocks are represented by the Naqb Formation which belongs to the Middle Eocene (Said, 1962) and comprises gray and pink limestone and by the Qalamoun Formation Bahariya Oasis depression must first be studied.

Identification of minerals and organic materials in Middle ...

The Middle Eocene ironstones of the Bahariya Depression consist of four iron ore types: manganiferous mud-ironstone, fossiliferous ironstone, stromatolitic ironstone and nummulitic–ooidal–oncoidal ironstone. The upper surfaces of these sequences were

Bahariya-Formation

The ironstones occur as thin crusts within Cenomanian clastic rocks (Bahariya Formation) and as big ore bodies at three mine areas, associated to Eocene carbonate units. Analysis of the two ironstone types was carried out by means of field, petrographic, mineralogical and geochemical investigations.

Microbially-Mediated Ooidal Ironstones, El Bahariya ...

The present study deals with the sedimentology, mineralogy and geochemistry of the Middle Eocene ironstones of the northeastern part of the Bahariya Depression, Western Desert, Egypt. It also focuses on the microbial role in the precipitation of these ironstones. The ironstone succession rests unconformably on three latertitized Cenomanian ...

Mid-Eocene (Bartonian) larger benthic foraminifera from ...

Mid-Eocene (Bartonian) larger benthic foraminifera from southeastern Turkey and northeastern Egypt: New evidence for the palaeobiogeography of the Tethyan carbonate platforms. Published on May 1, 2018 in Journal of African Earth Sciences 1.633

Diagenetic Evolution of the Middle Eocene Carbonates ...

the Middle Eocene carbonates in this area. The present study is an attempt to shed more light on the diagenetic history of the Middle Eocene Mokattam Formation exposed in the Cairo-Suez district. A special emphasis is put on the dolomitization processes which represent the most dominant diagenetic effect. Geologic Setting

J. Serra-Kiel's research works | University of Barcelona ...

In the northern part of the Bahariya Depression (Western Desert, Egypt) the Eocene carbonate succession, unconformably overlying the Cretaceous deposits, consists of three main stratigraphic ...

research about bahariya iron mine

Mineralogical and geochemical investigations of the … 11 · Mineralogical and geochemical investigations of the Middle Eocene ironstones, El Bahariya Depression, Western Desert, Egypt Walid Salama a,⁎, Mourtada El Aref a, Reinhard Gaupp b a Geology Department, Faculty of Science, Cairo University, Giza, Egypt b Institute of Earth Sciences, Friedrich Schiller University Jena, Germany ...

Researcher 2018;10(4) ...

the carbonate after their deposition in the shallow depression. The economic iron deposits of El Bahariya Oasis are confined to Karst features, and it is suggested that they were formed through lateritization processes during the senile stage of a post- Eocene Karst event. El Aref (1999) recognized

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Contribution to the biostratigraphy of the Middle-Upper ...

Foraminifera and calcareous nannofossils have been integrated to improve the biostratigraphy of the Middle-Upper Eocene rocks at North Eastern Desert. Biostratigraphic analysis has enabled the identification of three planktic biozones, Globigerinatheka kugleri/Morozovella aragonensis (E9), Morozovelloides crassatus (E13) and Turorotalia cerroazulensis pomeroli/T. cerr. cerroazulensis.

Stratigraphic Setting and Mineralogical Study on the ...

northeastern corner of the Bahariya Depression at about 25km west of El Bahariya-Cairo road (Fig. 1). It is bounded by the following coordinates: 29o 00' 00'' to 29o 04' E, and 28o 29' 30" to 28o 30' 30" N. The area is a topographically high feature, attaining about 2.3 sq. km and it is completely separated from the surrounding Eocene carbonate

Nummulite biostratigraphy of the Eocene succession in the ...

Aug 01, 2016· The Bahariya Depression is located near the central part of the Western Desert of Egypt where it shows elliptical geometry surrounded by a carbonate plateau mainly formed of Eocene rock units in its northern part.The Eocene stratigraphy, especially of the Middle to Upper Eocene formations in the Bahariya region has been a matter of dispute (Issawi et al., 2009).

Identification of minerals and organic materials in Middle ...

The Middle Eocene ironstones of the Bahariya Depression consist of four iron ore types: manganiferous mud‐ironstone, fossiliferous ironstone, stromatolitic ironstone and nummulitic–ooidal–oncoidal ironstone. The upper surfaces of these sequences were subjected to subaerial weathering and a lateritic iron ore type was formed.

Facies analysis and palaeoclimatic significance of ...

Jan 01, 2014· Lower and middle Eocene ironstone sequences of the Naqb and Qazzun formations from the north‐east Bahariya Depression, Western Desert, Egypt, represent a proxy for early Palaeogene climate and sea‐level changes. These sequences represent the only Palaeogene economic ooidal ironstone record of the Southern Tethys. These ironstone sequences rest unconformably on three …

Frontiers | Concentric Structures and Hydrothermal Venting ...

Oct 18, 2019· In fact, cross stratigraphy observations indicate that the Bahariya fault experienced three main phases of activity occurring respectively during the Late Cretaceous (88–70 Ma), Middle-Late Eocene (45–33 Ma) and Middle-Late Miocene (16–5.3 Ma) (Sehim, 1993; Moustafa et al., 2003).

Identification of the mineralogy and organic materials of ...

first one is the Middle Eocene ironstone deposits of the Bahariya Depression, which are located in the northern part of the Western Desert. The second is the Cretaceous ironstone deposits, which are located in the Eastern part of Aswan area. The Bahariya ironstones are subdivided into two marine shallowing-upward sequences separated by

Journal of African Earth Sciences

In the northern part of the Bahariya Depression (Western Desert, Egypt) the Eocene carbonate succes-sion, unconformably overlying the Cretaceous deposits, consists of three main stratigraphic units; the Naqb, Qazzun and El Hamra formations. The Eocene carbonates are relevant as they locally host a large economic iron mineralization.

Mortada ElAref - Professor of Ore Geology, Faculty of ...

Lower and middle Eocene ironstone sequences of the Naqb and Qazzun formations from the north-east Bahariya Depression, Western Desert, Egypt, represent a proxy for early Palaeogene climate and sea-level changes. These sequences represent the only Palaeogene economic ooidal ironstone record of the Southern Tethys.

Facies analysis and palaeoclimatic significance of ...

Lower and middle Eocene ironstone sequences of the Naqb and Qazzun formations from the north‐east Bahariya Depression, Western Desert, Egypt, represent a proxy for early Palaeogene climate and sea‐level changes. These sequences represent the only Palaeogene economic ooidal ironstone record of the Southern Tethys.