globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-012-0792-1
Scopus记录号: 2-s2.0-84872353388
论文题名:
Cenozoic intra-plate magmatism in the Darfur volcanic province: Mantle source, phonolite-trachyte genesis and relation to other volcanic provinces in NE Africa
作者: Lucassen F.; Pudlo D.; Franz G.; Romer R.L.; Dulski P.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2013
卷: 102, 期:1
起始页码: 183
结束页码: 205
语种: 英语
英文关键词: Basanite ; Darfur volcanic province ; Lithospheric mantle ; NE Africa ; Phonolite ; Trachyte
Scopus关键词: Cenozoic ; fractionation ; igneous geochemistry ; intraplate process ; isotopic composition ; lead isotope ; lithospheric structure ; magmatic differentiation ; magmatism ; mantle source ; neodymium isotope ; parent body ; petrogenesis ; phonolite ; Proterozoic ; strontium isotope ; trachyte ; volcanology ; Darfur ; Sudan
英文摘要: Chemical and Sr, Nd and Pb isotopic compositions of Late Cenozoic to Quaternary small-volume phonolite, trachyte and related mafic rocks from the Darfur volcanic province/NW-Sudan have been investigated. Isotope signatures indicate variable but minor crustal contributions. Some phonolitic and trachytic rocks show the same isotopic composition as their primitive mantle-derived parents, and no crustal contributions are visible in the trace element patterns of these samples. The magmatic evolution of the evolved rocks is dominated by crystal fractionation. The Si-undersaturated strongly alkaline phonolite and the Si-saturated mildly alkaline trachyte can be modelled by fractionation of basanite and basalt, respectively. The suite of basanite-basalt-phonolite-trachyte with characteristic isotope signatures from the Darfur volcanic province fits the compositional features of other Cenozoic intra-plate magmatism scattered in North and Central Africa (e. g., Tibesti, Maghreb, Cameroon line), which evolved on a lithosphere that was reworked or formed during the Neoproterozoic. © 2012 Springer-Verlag.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872353388&doi=10.1007%2fs00531-012-0792-1&partnerID=40&md5=dd9361627c7d70f1d02c91c017e5c1a6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70592
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Isotope Geochemistry Group, Department of Geosciences and MARUM Center for Marine Environmental Sciences, University of Bremen, Postfach 330 440, 28334 Bremen, Germany; Fachgebiet Mineralogie-Petrologie, TU Berlin, Ackerstr. 73-75, 13355 Berlin, Germany; Deutsches GeoForschungsZentrum, Telegrafenberg, 14577 Potsdam, Germany; Faculty of Chemistry and Earth Sciences, Institute of Earth Sciences, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany

Recommended Citation:
Lucassen F.,Pudlo D.,Franz G.,et al. Cenozoic intra-plate magmatism in the Darfur volcanic province: Mantle source, phonolite-trachyte genesis and relation to other volcanic provinces in NE Africa[J]. International Journal of Earth Sciences,2013-01-01,102(1)
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