The volcanic plugs of Ethiopia are feeders of trachytes in shield volcanoes.

Authors
Dercq, M Arndt, N Lapierre, H Yirgu, G
Citation
M. Dercq et al., The volcanic plugs of Ethiopia are feeders of trachytes in shield volcanoes., CR AC S IIA, 332(10), 2001, pp. 609-615
Citations number
13
Categorie Soggetti
Earth Sciences
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DELA TERRE ET DES PLANETES
ISSN journal
12518050 → ACNP
Volume
332
Issue
10
Year of publication
2001
Pages
609 - 615
Database
ISI
SICI code
1251-8050(200105)332:10<609:TVPOEA>2.0.ZU;2-N
Abstract
Volcanic plugs in northern Ethiopia have silica-saturated, alkali-rich trac hytic compositions. They are enriched in incompatible trace elements and sh ow negative Sr, Ba, Eu and Ti anomalies. Their compositions are distinct fr om those of felsic rocks within trap sequences, which are rhyolitic. The pl ugs are not the feeders to the trap volcanism but instead may be related to overlying shield volcanoes. (C) 2001 Academie des sciences / Editions scie ntifiques et medicales Elsevier SAS