 | | Journal (article/letter/editorial) | | Geology and genesis at Ras Gemsa area, of sulfur Deposits Red Sea Coast, Egypt EL SAYEDA.A. YOUSSEF...GeologyDepamtment, Facultyof Science, Cairo University,Egypt Field, of petrographic diagenetic and biogenic...block bearing that native presence of at Gemsa matter (hydrocarrocks deposits lagoonal is...dolomite) evaporite-carbonate evaporite of shallow Ras (biogenic organic of The deposits sulfur dolomite...the Miocene evaporite sequence at Ras Gemsa, Red Sea Coast, Egypt with special emphasis on the relationship | | | Journal (article/letter/editorial) | | sulfur in the Miocene evaporite cycle on the Red Sea coast, Egypt EL SAYEDA.A. YOUSSEF Geology Department...Department, Facultyof Science, CairoUniversity, Egypt Thefabricsandpresenceofcelestitein thecarbonatecementsinthe...Miocene evaporite cycle on the marginal area of the Red Sea between Quseir and Mersa Alam (Fig. 1). The carbonate...analysis of and Geology, was Univer Norway. al. (1985) considered these structures as caliche deposits...Neogene sequence between Quseir and Mersa Alam, Red Sea coast. crite rich in miliolids and molluscs with |  | | Book | | Section ae 7 1 Introduction 2 3 Algeria Egypt 15 18 4 Gulf States 27 5 tlrag 28 6 7 Jordan...Tunisia 49 51 146 Yemen 53 17 18 19 The Red Sea Israel References 55 56 oF 20 List of Maps ...at the end. A special emphasis has been given to Egypt because of the relatively large number of documents...spelling has been used: Abu instead of Abou, Bou Al instead of El Gabal instead of Jebel, Gebel, Djebel...Dhahab; Hofrat An Nahas has been changed to Hofrat Al Nahas, etc. MINERAL RESOURCES OF THE ARAB COUNTRIES |  | | Journal (article/letter/editorial) | | bottom to top: a) massive gypsum, b) laminated anhydrite, c) nodular-brecciated gypsum, d) gypsum arenites...(1978), Jorgensen and Revsbech (1983), and Tekin et al, (1999). Trace Elements and Isotope Studies ICP-ES...sulfur lobates was found from the Gulf of the Suez, Egypt (Aref 1998). Numerous studies in the literature...literature including Ivanov (1968), Kern and Thode (1968), Al-Sawaf(1977), Zinder and Brock (1978), Pawlowski et..., Ivanov 1968; Al-Sawaf 1977; Jorgensen and Revsbech 1983; Postgate 1984; Tekin et al. 1999). presence |  | | Journal (article/letter/editorial) | | have been interpreted as replacing gypsum and anhydrite (Davis and Kirkland, 1979; Kirkland and Evans...Peckmann et al. / Sedimentary Geology 126 (1999) 205–222 ican examples occur on the Gemsa Peninsula on...occurred very soon after deposition (McKenzie et al., 1979/1980; McKenzie, 1985). Sulfur within lagoonal...been interpreted to be of biogenic origin (Dessau et al., 1962). The process of transforming sulfate minerals...attributed to sulfate-reducing bacteria (Thode et al., 1954). Carbonate replacement of gypsum is not restricted |  | | Book | | · Yasser Abd El-Rahman Editors The Geology of Egypt Regional Geology Reviews Series Editors Roland...Geology of Egypt 123 • Editors Zakaria Hamimi Department of Geology Benha University Benha, Egypt Jesús...El-Barkooky Department of Geology Cairo University Giza, Egypt Harald Fritz Department of Geology and Environment...El-Rahman Department of Geology Cairo University Giza, Egypt ISSN 2364-6438 ISSN 2364-6446 (electronic) Regional...by: Prof. M.A. Abd El-Wahed, Tanta University, Egypt) This Springer imprint is published by the registered |  | | Journal (article/letter/editorial) | | gypsum which arc associated with limestones and red beds indicating accumulation in a shallow lake. Calcite...evaporitic sequences are characterized by gypsum or anhydrite units partially or completely replaced by carbonate...origin or salt dome caprock formations (e.g. Dessau et al., 1962; Kirkland and Evans, 1976; Davis and Kirkland...5007 Bergen, Norway. 0037-0738/92/$05.00 © 1992 et al., 1980; McKenzie, 1985; Pierre and Rouchy, 1988;...1989) and from modern saline lakes such as the Dead Sea (Neev and Emery, 1967). How and why replacement of |  | | Journal (article/letter/editorial) | | under specific physicochemical conditions (Rouchy et al. 2001). In particular, the carbonatation (i.e., the...carbonate minerals) of evaporitic calcium sulfates (anhydrite and gypsum) has led to the formation of significant...McKenzie et al. 1980; Pierre and Rouchy 1988; Bell 1989; Youssef 1989; Anadón et al. 1992; Rouchy et al. 1994...1994, 1998; Cañaveras et al. 1996, 1998; Sanz-Rubio et al. 2001). Two main mechanisms have been invoked...formation of native sulfur accumulations (Anadón et al. 1992). The other one assumes that the carbonatation |  | | Book | | halite.46 Burial of sulphate evaporites.47 Nodular anhydrite and water loss .47 Burial Salts: Nodules and stylolites...Sabkhas of coastal Kuwait.161 Sabkhas of Kadmah Bay.161 Al-Khiran Sabkha.164 Other coastal sabkhas.166 Gulf...deltas.168 Western Nile delta coast, Mediterranean Egypt.168 Eastern Mediterranean Coast of the Nile Delta...floodplain-perennial saline lake.210 Eolian sabkhas. 211 Sea-margins with elongate eolian sabkhat.212 Sheets of...salinas and perennial lakes.221 Introduction.□ 221 Sea-margin subaqueous salts .222 Coastal salinas of Australia |
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