Knowledge Resource Center for Ecological Environment in Arid Area
Petrological and geochemical studies on the ophiolite and island arc association of Wadi Hammariya, Central Eastern Desert, Egypt | |
Abdel-Karim, A. M.1; Azzaz, S. A.1; Moharem, A. F.2; El-Alfy, H. M.1 | |
通讯作者 | Abdel-Karim, A. M. |
来源期刊 | ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
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ISSN | 2193-567X |
EISSN | 2191-4281 |
出版年 | 2008 |
卷号 | 33期号:1C页码:117-138 |
英文摘要 | The Wadi Hammariya area is covered by two main rock units, viz. dismembered ophiolite assemblage (serpentinites and their derivatives, metagabbros, amphibolites and metabasalts) and metamorphosed island arc association (calc-alkaline metavolcanics and their pyroclastics and volcaniclastic metasediments). The ophiolite assemblage comprises peridotite serpentinites, metapyroxenites, serpentinites, carbonate serpentinites, serpentine schists, chloritite, talc-carbonate rock; pyroxene hornblende-, hornblende- and leuco-metagabbros; amphibolite; spilitic metabasalts, and metabasaltic andesites. This ophiolitic assemblage has been metamorphosed up to the greenschist facies. The island arc association comprises metavolcanics (meta-andesites, metatuffs, metadacites, metarhyodacites, and metagranophyres) and volcaniclastic metasedimentary rocks (meta-mudstones, metasiltstones, slates, metagreywackes, metaconglomerates, and quartz schists). This rock association, particularly the volcaniclastic metasediments, represents the melange host rocks for the ophiolitic assemblage. Major and trace elements geochemistry indicate that the present ophiolitic metagabbros and metavolcanics can be compared with the suprasubduction zone ophiolitic mafic-ultramafic cumulates, similar to high Mg and low Ti basaltic magma which show tholeiitic affinity. The island arc metavoicanics show that they are derived from a calc-alkaline magma in an island arc or plate margin setting. The metagreywackes originated from acidic and intermediate oceanic island arc and/or active continental margin sources to be deposited in a back-arc basin setting. |
英文关键词 | ophiolite island arc sequence Wadi Hammariya Eastern Desert Egypt petrology geochemistry |
类型 | Article |
语种 | 英语 |
国家 | Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000258607300007 |
WOS关键词 | ROCKS ; CLASSIFICATION ; SERIES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/156480 |
作者单位 | 1.Zagazig Univ, Fac Sci, Dept Geol, Zagazig, Egypt; 2.Nucl Mat Author, Cairo, Egypt |
推荐引用方式 GB/T 7714 | Abdel-Karim, A. M.,Azzaz, S. A.,Moharem, A. F.,et al. Petrological and geochemical studies on the ophiolite and island arc association of Wadi Hammariya, Central Eastern Desert, Egypt[J],2008,33(1C):117-138. |
APA | Abdel-Karim, A. M.,Azzaz, S. A.,Moharem, A. F.,&El-Alfy, H. M..(2008).Petrological and geochemical studies on the ophiolite and island arc association of Wadi Hammariya, Central Eastern Desert, Egypt.ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING,33(1C),117-138. |
MLA | Abdel-Karim, A. M.,et al."Petrological and geochemical studies on the ophiolite and island arc association of Wadi Hammariya, Central Eastern Desert, Egypt".ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 33.1C(2008):117-138. |
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