EarthRef.org Reference Database (ERR) -- Murata & Richter 1961

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Murata & Richter 1961

Murata, K.J. and Richter, D.H. (1961). Magmatic differentiation in the Uwekahuna laccolith, Kilauea Caldera, Hawaii. Journal of Petrology 2(3): 424-437.

Petrographic and chemical studies of a suite of rocks from the Uwekahuna laccolith of Kilauea volcano show that the original mafic tholeiitic magma differentiated into tholeiitic picrite, tholeiitic olivine gabbro, and an aphanitic rock approaching quartz - basalt in composition. Mechanisms involved were an initial gravity settling of olivine and a final filter pressing of the residual liquid. The range of composition represented by the rocks of the laccolith is as great as that found among all hitherto analyzed lavas of the volcano.

Keywords
basalts; chemical analysis; East Pacific Ocean Islands; Filter, pressing; gabbros; geochemistry; Gravity settling; Hawaii; igneous, rocks; intrusions; Kilauea caldera; laccoliths; magmas; magmas and, magmatic differentiation; magmatic differentiation; Oceania;, petrology; plutonic rocks; Polynesia; United States; Uwekahuna;, Uwekahuna laccolith; volcanic rocks, 05, Igneous and metamorphic petrology

Journal
Journal of Petrology
http://petrology.oupjournals.org/

Publisher
Oxford University Press
Great Clarendon Street
Oxford OX2 6DP
U.K.
+44-(0)-1865-267907
+44-(0)-1865-267485
jnl.info@oup.co.uk