Arc lavas on both sides of a trench: Slab window effects at the Solomon Islands triple junction, SW Pacific

• Published in: Earth and planetary science letters Vol. 279; no. 3; pp. 293 - 302
• Main Authors: Chadwick, John, Perfit, Michael, McInnes, Brent, Kamenov, George, Plank, Terry, Jonasson, Ian, Chadwick, Claire
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.03.2009
• Subjects: island arc; magma mixing; Marine; slab window; Solomon Islands; subduction; triple junction; Woodlark Spreading Center; Pacific Plate; PSW, South Pacific, Chile Rise; ISEW, Pacific, North Solomon Trench; ISE, Pacific, Solomon Is; subduction; island arc; slab window; triple junction; magma mixing; Woodlark Spreading Center; Solomon Islands

The Woodlark Spreading Center (WSC) is subducted at the San Cristobal trench, forming a triple junction at the New Georgia Group (NGG) arc in the Solomon Islands. WSC lavas are N-MORB at > 100 km from the trench, but with decreasing distance they have increasingly arc-like Sr–Nd–Pb isotopic ratio...