Transition from calc-alkaline to potassium-rich magmatism in subduction environments: geochemical and Sr, Nd, Pb isotopic constraints from the island of Vulcano (Aeolian arc)

Transition from calc-alkaline to potassium-rich magmatism in subduction environments: geochemical and Sr, Nd, Pb isotopic constraints from the island of Vulcano (Aeolian arc)

The problem of mantle metasomatism vs. crustal contamination in the genesis of arc magmas with different potassium contents has been investigated using new trace element and Sr-Nd-Pb isotopic data on the island of Vulcano, Aeolian arc. The analysed rocks range in age from 120 ka to the present day,...

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Veröffentlicht in:Contributions to mineralogy and petrology 2000-10, Vol.139 (6), p.684-703
Hauptverfasser: De Astis, Gianfilippo, Peccerillo, Angelo, Kempton, Pamela D., La Volpe, Luigi, Wu, Tsai W.
Format: Artikel
Sprache:eng
Schlagworte:
Basalt
Geology
Islands
Lava
Mineralogy
Minerals
Petrology
Potassium
Trace elements
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Zusammenfassung:The problem of mantle metasomatism vs. crustal contamination in the genesis of arc magmas with different potassium contents has been investigated using new trace element and Sr-Nd-Pb isotopic data on the island of Vulcano, Aeolian arc. The analysed rocks range in age from 120 ka to the present day, and cover a compositional range from basalt to rhyolite of the high-K calc-alkaline (HKCA) to shoshonitic (SHO) and potassic (KS) series.
ISSN:0010-7999
1432-0967
DOI:10.1007/s004100000172