Tracing trace elements from sediment input to volcanic output at subduction zones

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doi: 10.1038/362739a0
Author(s): Plank, Terry; Langmuir, Charles H.
Author Affiliation(s): Primary:
Lamont-Doherty Earth Observatory, Palisades, NY, United States
Volume Title: Nature (London)
Source: Nature (London), 362(6422), p.739-743. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 38 refs.; illus. incl. 1 table
Summary: Sediment fluxes into eight trenches world-wide are reported for Ba, Sr, K, Pb, Cs, La, Th and U, elements that are enriched in arc volcanics. The volcanic outputs reflect the sediment inputs, after allowing for the effects of melting and some geochemical characteristics of arc volcanic rocks, and can be traced back to the trench sediments. The results can be extrapolated from generic models based on isotope and trace element ratios to more quantifiable models based on element fluxes. This mass-balance indicates that approx 20% of the element budget in subducted sediment is recycled to the arc, but a larger fraction of those sediments may descend with the plate to the deeper mantle.
Year of Publication: 1993
Research Program: DSDP Deep Sea Drilling Project
ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 05 Petrology, Igneous and Metamorphic; Actinides; Alkali metals; Alkaline earth metals; Barium; Basalts; Cesium; Enrichment; Geochemical cycle; Geochemistry; Igneous rocks; Island arcs; Lanthanum; Mantle; Marine sediments; Mass balance; Metals; Mid-ocean ridge basalts; Ocean-island basalts; Potassium; Rare earths; Rubidium; Sediments; Strontium; Subduction zones; Theoretical studies; Thorium; Trace elements; Tracers; Trenches; Uranium; Volcanic rocks; Volcanism
Record ID: 1993010768
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom

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