Peridotites from the Izu-Bonin-Mariana Forearc (ODP Leg 125): Evidence for Mantle Melting and Melt-Mantle Interaction in a Supra-Subduction Zone Setting

1998/09/01 by I. J. Parkinson, J. A. Pearce, John A. Pearce · 4 citations
Earth and Planetary Sciences · #Geological and Geochemical Analysis #earthquake and tectonic studies #High-pressure geophysics and materials

paper · pdf · doi:10.1093/petroj/39.9.1577

Abstract

quartz) -11 (log units) and FMQ + 04 which ODP Leg 125; Izu-Bonin-Mariana forearc overlap those of mid-ocean ridge basalt (MORB) peridotites. Dunites from Conical Seamount contain small amounts of clinopyroxene, orthopyroxene and amphibole and are light REE (LREE) enriched. Moreover, they are considerably more oxidized than the harzburgites

Citations

• Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas
• Closure temperature in cooling geochronological and petrological systems
• Partial Melt Distributions from Inversion of Rare Earth Element Concentrations
• Textures and Fabrics of Upper-Mantle Peridotites as Illustrated by Xenoliths from Basalts

Cited by

• Geochemistry of Ocean Floor and Fore-arc Serpentinites: Constraints on the Ultramafic Input to Subduction Zones
• Geochemical Characterization of Serpentinized Peridotites from the Shergol Ophiolitic Slice along the Indus Suture Zone (ISZ), Ladakh Himalaya, India
• Geochemistry of subduction zone serpentinites: A review
• Timing and tectonic controls in the evolving orogen of SE Asia and the western Pacific and some implications for ore generation

Related

• Bulk-rock Major and Trace Element Compositions of Abyssal Peridotites: Implications for Mantle Melting, Melt Extraction and Post-melting Processes Beneath Mid-Ocean Ridges
• Melt Infiltration and Olivine Accumulation in Upwelling Mantle Recorded in Interlayered Spinel Peridotite, Plagioclase Lherzolite, and Mafic Rocks in the Horoman Peridotite Complex, Japan
• Diversity of Mafic Rocks in the Ronda Peridotite: Evidence for Pervasive Melt-Rock Reaction during Heating of Subcontinental Lithosphere by Upwelling Asthenosphere
• Petrology and Trace Element Budgets of High-pressure Peridotites Indicate Subduction Dehydration of Serpentinized Mantle (Cima di Gagnone, Central Alps, Switzerland)
• The Water‐Saturated Solidus and Second Critical Endpoint of Peridotite: Implications for Magma Genesis Within the Mantle Wedge