EarthRef.org Reference Database (ERR) -- Sun & McDonough 1989

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Sun & McDonough 1989

Sun, S.S. and McDonough, W.F. (1989). Chemical and isotopic systematics of oceanic basalts; implications for mantle composition and processes. In: Magmatism in the ocean basins. Saunders, A.D. and Norry, M.J. (Editors), Geological Society of London, London. 42: 313-345.

Trace-element data for mid-ocean ridge basalts (MORBs) and ocean island basalts (OIB) are used to formulate chemical systematics for oceanic basalts. The data suggest the order of trace-element incompatibility in oceanic basalts. This rule works in general and suggests that the overall fractionation processes operating during magma generation and evolution are relatively simple, involving no significant change in the environment of formation for MORBs and OIBs.

Keywords
Atlantic Ocean; Atlantic Ocean Islands; basalts; composition;, convection; crust; differentiation; fractional crystallization;, genesis; geochemistry; geodynamics; igneous rocks; isotopes; lead;, magma chambers; magmas; mantle; metals; mid-ocean ridge basalts;, models; niobium; oceanic crust; partial melting; Pb-206/Pb-204;, petrology; processes; radioactive isotopes; ratios; Saint Helena;, stable isotopes; variations; volcanic rocks, 02D Isotope geochemistry; 05A Igneous and metamorphic petrology