Arid
DOI10.1144/gsjgs.153.5.0705
Pan-African magmatism in the Wadi El-Imra district, Central Eastern Desert, Egypt: Geochemistry and tectonic environment
Furnes, H; ElSayed, MM; Khalil, SO; Hassanen, MA
通讯作者Furnes, H
来源期刊JOURNAL OF THE GEOLOGICAL SOCIETY
ISSN0016-7649
出版年1996
卷号153页码:705-718
英文摘要

The Late Proterozoic rocks of the Wadi El-Imra district of the Central Eastern Desert, Egypt, comprise a metagabbro-diorite complex (oldest) and Older and Younger Granitoid complexes. Trace element characteristics show that the basic and granitoid rocks are of calc-alkaline affinity, but some of the Younger Granitoids grade into alkaline granites. The epsilon(Nd) values of the the basic and granitoid rocks range from +8.3 to +4.9, and Nd model ages are younger or rather similar to crystallization ages. These data suggest a predominant depleted mantle derivation, indicating formation by subduction in an oceanic setting. REE patterns of the granitoid rocks suggest different modes of petrogenesis. This, coupled with the occurrence of amphibolite xenoliths in the Older Granitoids, may indicate that some of these rocks represent partial melts from basic rocks that have been amphibolitized at deep crustal levels of the oceanic are.


英文关键词Egypt Pan-African Orogeny igneous activity trace elements isotopes
类型Article
语种英语
国家EGYPT
收录类别SCI-E
WOS记录号WOS:A1996VJ73400009
WOS关键词ARABIAN SHIELD ; NUBIAN SHIELD ; ISOTOPE SYSTEMATICS ; CRUSTAL EVOLUTION ; SINAI PENINSULA ; VOLCANIC-ROCKS ; TRACE-ELEMENTS ; GRANITIC-ROCKS ; IGNEOUS ROCKS ; ISLAND ARCS
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/2XILL650/133204
作者单位(1)UNIV ALEXANDRIA,FAC SCI,DEPT GEOL,ALEXANDRIA,EGYPT
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Furnes, H,ElSayed, MM,Khalil, SO,et al. Pan-African magmatism in the Wadi El-Imra district, Central Eastern Desert, Egypt: Geochemistry and tectonic environment[J],1996,153:705-718.
APA Furnes, H,ElSayed, MM,Khalil, SO,&Hassanen, MA.(1996).Pan-African magmatism in the Wadi El-Imra district, Central Eastern Desert, Egypt: Geochemistry and tectonic environment.JOURNAL OF THE GEOLOGICAL SOCIETY,153,705-718.
MLA Furnes, H,et al."Pan-African magmatism in the Wadi El-Imra district, Central Eastern Desert, Egypt: Geochemistry and tectonic environment".JOURNAL OF THE GEOLOGICAL SOCIETY 153(1996):705-718.
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