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DOI | 10.1016/j.jafrearsci.2016.04.016 |
Nummulite biostratigraphy of the Eocene succession in the Bahariya Depression, Egypt: Implications for timing of iron mineralization | |
Afify, A. M.1,2; Serra-Kiel, J.3; Sanz-Montero, M. E.1; Calvo, J. P.1; Sallam, E. S.2 | |
通讯作者 | Afify, A. M. |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES
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ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2016 |
卷号 | 120页码:44-55 |
英文摘要 | 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 units; the Naqb, Qazzun and El Hamra formations. The Eocene carbonates are relevant as they locally host a large economic iron mineralization. This work revises the stratigraphic attribution of the Eocene formations on the basis of larger benthic foraminifers from both carbonate and ironstone beds. Eight Nummulites species spanning the late Ypresian - early Bartonian (SBZ12 to SBZ17) were identified, thus refining the chronostratigraphic framework of the Eocene in that region of Central Egypt. Moreover, additional sedimentological insight of the Eocene carbonate rocks is presented. The carbonate deposits mainly represent shallow marine facies characteristic of inner to mid ramp settings; though deposits interpreted as intertidal to supratidal are locally recognized. Dating of Nummulites assemblages from the youngest ironstone beds in the mines as early Bartonian provides crucial information on the timing of the hydrothermal and meteoric water processes resulting in the formation of the iron ore mineralization. The new data strongly support a post-depositional, structurally-controlled formation model for the ironstone mineralization of the Bahariya Depression. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Nummulites Eocene carbonates Ironstone Chronostratigraphy Western Desert Central Egypt |
类型 | Article |
语种 | 英语 |
国家 | Spain ; Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000378967700005 |
WOS关键词 | WESTERN DESERT ; DEPOSITS ; ORIGIN ; IRONSTONES ; EVOLUTION ; ORES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/193924 |
作者单位 | 1.Univ Complutense, Fac Geol Sci, Petrol & Geochem Dept, C Jose Antonio Novais 2, E-28040 Madrid, Spain; 2.Benha Univ, Dept Geol, Fac Sci, Banha 13518, Egypt; 3.Univ Barcelona, Stratig Paleontol & Marine Geosci Dept, C Marti & Franques S-N, E-08028 Barcelona, Spain |
推荐引用方式 GB/T 7714 | Afify, A. M.,Serra-Kiel, J.,Sanz-Montero, M. E.,et al. Nummulite biostratigraphy of the Eocene succession in the Bahariya Depression, Egypt: Implications for timing of iron mineralization[J],2016,120:44-55. |
APA | Afify, A. M.,Serra-Kiel, J.,Sanz-Montero, M. E.,Calvo, J. P.,&Sallam, E. S..(2016).Nummulite biostratigraphy of the Eocene succession in the Bahariya Depression, Egypt: Implications for timing of iron mineralization.JOURNAL OF AFRICAN EARTH SCIENCES,120,44-55. |
MLA | Afify, A. M.,et al."Nummulite biostratigraphy of the Eocene succession in the Bahariya Depression, Egypt: Implications for timing of iron mineralization".JOURNAL OF AFRICAN EARTH SCIENCES 120(2016):44-55. |
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