Arid
DOI10.1016/j.jafrearsci.2004.11.005
The Pan-African high-K calc-alkaline peraluminous Elat granite from southern Israel: geology, geochemistry and petrogenesis
Eyal, M; Litvinovsky, BA; Katzir, Y; Zanvilevich, AN
通讯作者Litvinovsky, BA
来源期刊JOURNAL OF AFRICAN EARTH SCIENCES
ISSN1464-343X
EISSN1879-1956
出版年2004
卷号40期号:3-4页码:115-136
英文摘要

Calc-alkaline leucocratic granites that were emplaced at the late post-collision stage of the Pan-African orogeny are abundant in the northern half of the Arabian-Nubian Shield. Commonly, they are referred to as the Younger Granite 11 suite. In southern Israel such rocks are known as Elat granite. Studies of these rocks enable to recognize two types of granites: coarse-grained, massive Elat granite (EG), and fine- to medium-grained Shahmon gneissic granite (SGG). Both granite types are high-K and peraluminous (ASI ranges from 1.03 to 1.16). They are similar in modal composition, mineral and whole-rock chemistry. Within the EG, a noticeable distinction in whole-rock chemistry and mineral composition is observed between rocks making up different plutons. In particular, the granite of Wadi Shelomo, as compared to the Rehavam pluton, is enriched in SiO2, FeO*, K2O, Ba, Zr, Th, LREE and impoverished in MgO, Na2O, Sr, and HREE. The Eu/Eu* values in the granite are low, up to 0.44. Mass-balance calculations suggest that chemical and mineralogical variations were caused by fractionation of similar to 16 wt.% plagioclase from the parental Rehavam granite magma at temperature of 760-800 degreesC (muscovite-biotite geothermometer). The Rb-Sr isochrons yielded a date of 623 +/- 24 Ma for the EG, although high value of age-error does not allow to constrain time of emplacement properly. The Rb-Sr date for SGG is 640 +/- 9 Ma; however, it is likely that this date points to the time of metamorphism. A survey of the literature shows that peraluminous, high-K granites, similar to the EG, are abundant among the Younger Granite II plutons in the Sinai Peninsula and Eastern Desert, Egypt. They were emplaced at the end of the batholithic (late post-collision) stage. The most appropriate model for the generation of the peraluminous granitic magma is partial melting of metapelite and metagreywacke. (C) 2004 Elsevier Ltd. All rights reserved.


英文关键词calc-alkaline leucocratic granite peraluminous high-K Arabian-Nubian shield Southern Israel
类型Article
语种英语
国家Israel ; Russia
收录类别SCI-E
WOS记录号WOS:000227045300002
WOS关键词ARABIAN-NUBIAN SHIELD ; PRESSURE REGIONAL METAMORPHISM ; PRECAMBRIAN CRUSTAL EVOLUTION ; EASTERN-DESERT ; TECTONIC ENVIRONMENT ; ISOTOPIC CONSTRAINTS ; ANOROGENIC MAGMATISM ; STABLE-ISOTOPE ; TRACE-ELEMENTS ; NE SUDAN
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/147098
作者单位(1)Ben Gurion Univ Negev, Dept Geol & Environm Sci, IL-84105 Beer Sheva, Israel;(2)RAS, Inst Geol, Ulan Ude, Russia
推荐引用方式
GB/T 7714
Eyal, M,Litvinovsky, BA,Katzir, Y,et al. The Pan-African high-K calc-alkaline peraluminous Elat granite from southern Israel: geology, geochemistry and petrogenesis[J]. Ben-Gurion University of the Negev,2004,40(3-4):115-136.
APA Eyal, M,Litvinovsky, BA,Katzir, Y,&Zanvilevich, AN.(2004).The Pan-African high-K calc-alkaline peraluminous Elat granite from southern Israel: geology, geochemistry and petrogenesis.JOURNAL OF AFRICAN EARTH SCIENCES,40(3-4),115-136.
MLA Eyal, M,et al."The Pan-African high-K calc-alkaline peraluminous Elat granite from southern Israel: geology, geochemistry and petrogenesis".JOURNAL OF AFRICAN EARTH SCIENCES 40.3-4(2004):115-136.
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