Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 27 October 1995:
Vol. 270. no. 5236, pp. 625 - 627
DOI: 10.1126/science.270.5236.625
Prev | Table of Contents | Next

Reports

Cross-Arc Geochemical Variations in the Kurile Arc as a Function of Slab Depth

Jeffrey G. Ryan (1),  Julie Morris (2),  Fouad Tera,  William P. Leeman,  Andrei Tsvetkov

Lavas from transects across the Kurile Islands arc showed geochemical variations related to changes in the compositions of fluids derived from the subducting slab. Enrichment factors for boron, cesium, arsenic, and antimony, all elements with strong affinities for water, decreased across the arc. This decrease is presumably related to losses of water-rich fluids during the dehydration of the subducting plate. Enrichments of potassium, barium, beryllium-10, and the light rare earth elements remained constant; these species may move in silica-rich fluids liberated from the slab at greater depths.


J. G. Ryan, Department of Geology, University of South Florida, Tampa, FL 33620, USA, and Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA.
J. Morris and F. Tera, Department of Terrestrial Magnetism, Carnegie Institution Washington, Washington, DC 20015, USA.
W. P. Leeman, Department of Geology and Geophysics, Rice University, Houston, TX, USA.
A. Tsvetkov, Institute of Mining and Mineral Resources, Russian Academy of Sciences, Moscow, Russia.
(1) To whom correspondence should be addressed.
(2) Present address: Department of Earth and Planetary Sciences, Washington University, St. Louis, MO, USA.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Petrogenesis of Lavas along the Solomon Island Arc, SW Pacific: Coupling of Compositional Variations and Subduction Zone Geometry.
S. Schuth, C. Munker, S. Konig, C. Qopoto, S. Basi, D. Garbe-Schonberg, and C. Ballhaus (2009)
J. Petrology 50, 781-811
   Abstract »    Full Text »    PDF »
Mineralogy and Paragenesis of the Co-Ni Arsenide Ores of Bou Azzer, Anti-Atlas, Morocco.
A. H. Ahmed, S. Arai, and M. Ikenne (2009)
Economic Geology 104, 249-266
   Abstract »    Full Text »    PDF »
Slab-Derived Fluids in the Magma Sources of St. Vincent (Lesser Antilles Arc): Volatile and Light Element Imprints.
A.-S. Bouvier, N. Metrich, and E. Deloule (2008)
J. Petrology 49, 1427-1448
   Abstract »    Full Text »    PDF »
Generation of Rear-arc Magmas Induced by Influx of Slab-derived Supercritical Liquids: Implications from Alkali Basalt Lavas from Rishiri Volcano, Kurile Arc.
T. Kuritani, T. Yokoyama, and E. Nakamura (2008)
J. Petrology 49, 1319-1342
   Abstract »    Full Text »    PDF »
The fate of subducted sediments: A case for backarc intrusion and underplating.
C. A. Currie, C. Beaumont, and R. S. Huismans (2007)
Geology 35, 1111-1114
   Abstract »    Full Text »    PDF »
Post-collisional, Potassic and Ultrapotassic Magmatism of the Northern Tibetan Plateau: Constraints on Characteristics of the Mantle Source, Geodynamic Setting and Uplift Mechanisms.
Z. GUO, M. WILSON, J. LIU, and Q. MAO (2006)
J. Petrology 47, 1177-1220
   Abstract »    Full Text »    PDF »
Constraints from Thorium/Lanthanum on Sediment Recycling at Subduction Zones and the Evolution of the Continents.
T. PLANK (2005)
J. Petrology 46, 921-944
   Abstract »    Full Text »    PDF »
Potassic Magmatism in Western Sichuan and Yunnan Provinces, SE Tibet, China: Petrological and Geochemical Constraints on Petrogenesis.
Z. GUO, J. HERTOGEN, J. LIU, P. PASTEELS, A. BOVEN, L. PUNZALAN, H. HE, X. LUO, and W. ZHANG (2005)
J. Petrology 46, 33-78
   Abstract »    Full Text »    PDF »
Experimental evidence on phlogopitic mantle metasomatism induced by phengite dehydration.
B. WUNDER and S. MELZER (2003)
European Journal of Mineralogy 15, 641-647
   Abstract »    Full Text »    PDF »
Volcanic fronts form as a consequence of serpentinite dehydration in the forearc mantle wedge.
K. H. Hattori and S. Guillot (2003)
Geology 31, 525-528
   Abstract »    Full Text »    PDF »
Record in metamorphic tourmalines of subduction-zone devolatilization and boron cycling.
G. E. Bebout and E. Nakamura (2003)
Geology 31, 407-410
   Abstract »    Full Text »    PDF »
Insights into Magma Genesis at Convergent Margins from U-series Isotopes.
S. P. Turner, S. Turner, B. Bourdon, and J. Gill (2003)
Reviews in Mineralogy and Geochemistry 52, 255-315
   Full Text »    PDF »
Intra-oceanic subduction systems: introduction.
P. T. Leat and R. D. Larter (2003)
Geological Society, London, Special Publications 219, 1-17
   Abstract »    PDF »
Some geochemical constraints on hot fingers in the mantle wedge: evidence from NE Japan.
Y. Tamura (2003)
Geological Society, London, Special Publications 219, 221-237
   Abstract »    PDF »
Magmatism in the South Sandwich arc.
P. T. Leat, J. L. Smellie, I. L. Millar, and R. D. Larter (2003)
Geological Society, London, Special Publications 219, 285-313
   Abstract »    PDF »
Petrogenesis of the Back-arc East Scotia Ridge, South Atlantic Ocean.
S. FRETZDORFF, R. A. LIVERMORE, C. W. DEVEY, P. T. LEAT, and P. STOFFERS (2002)
J. Petrology 43, 1435-1467
   Abstract »    Full Text »    PDF »
Geochemical Evolution of Akagi Volcano, NE Japan: Implications for Interaction Between Island-arc Magma and Lower Crust, and Generation of Isotopically Various Magmas.
K. KOBAYASHI and E. NAKAMURA (2001)
J. Petrology 42, 2303-2331
   Abstract »    Full Text »    PDF »
Island-arc basalt alkali ratios: Constraints from phengite-fluid partitioning experiments.
S. Melzer and B. Wunder (2000)
Geology 28, 583-586
   Abstract »    Full Text »    PDF »
Lithium isotope evidence for light element decoupling in the Panama subarc mantle.
P. B. Tomascak, J. G. Ryan, and M. J. Defant (2000)
Geology 28, 507-510
   Abstract »    Full Text »    PDF »
Magma Supply in Back-arc Spreading Centre Segment E2, East Scotia Ridge.
P. T. LEAT, R. A. LIVERMORE, I. L. MILLAR, and J. A. PEARCE (2000)
J. Petrology 41, 845-866
   Abstract »    Full Text »    PDF »
Oxygen Isotope Geochemistry of Oceanic-Arc Lavas.
J. M. EILER, A. CRAWFORD, T. ELLIOTT, K. A. FARLEY, J. W. VALLEY, and E. M. STOLPER (2000)
J. Petrology 41, 229-256
   Abstract »    Full Text »    PDF »
Geochemical Variations in Vanuatu Arc Lavas: the Role of Subducted Material and a Variable Mantle Wedge Composition.
D. W. Peate, J. A. Pearce, C. J. Hawkesworth, H. Colley, C. M.H. Edwards, and K. Hirose (1997)
J. Petrology 38, 1331-1358
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)