Cross-arc geochemical variations in volcanic fields in Honduras C.A.: progressive changes in source with distance from the volcanic front

A geochemical traverse across Honduras re veals the heterogeneity of the mantle underneath Central America. Alkali basalts from Lake Yojoa (170 km behind the front) have low 17 Sr/ 16 Sr but high La/Yb, and elevated incompatible trace element abundances, consistent with derivation from a normal mid-...

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Bibliographic Details
Published in:Contributions to mineralogy and petrology 1997-11, Vol.129 (4), p.341-351
Main Authors: Patino, Lina C., Carr, Michael J., Feigenson, Mark D.
Format: Article
Language:English
Subjects:
Basalt
Chemistry
Geochemistry
Geology
Heterogeneity
Lava
Mineralogy
Petrology
Trace elements
Volcanic fields
Volcanoes
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Summary:A geochemical traverse across Honduras re veals the heterogeneity of the mantle underneath Central America. Alkali basalts from Lake Yojoa (170 km behind the front) have low 17 Sr/ 16 Sr but high La/Yb, and elevated incompatible trace element abundances, consistent with derivation from a normal mid-ocean ridge basalt source mantle via low degrees of melting.
ISSN:0010-7999
1432-0967
DOI:10.1007/s004100050341