Arid
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
ISSN2193-567X
EISSN2191-4281
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
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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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