Journal article
Subduction initiation and ophiolite crust: new insights from IODP drilling
International geology review, Vol.59(11), pp.1439-1450
2017
DOI: 10.1080/00206814.2016.1276482
Abstract
nternational Ocean Discovery Program (IODP) Expedition 352 recovered a high-fidelity record of volcanism related to subduction initiation in the Bonin fore-arc. Two sites (U1440 and U1441) located in deep water nearer to the trench recovered basalts and related rocks; two sites (U1439 and U1442) located in shallower water further from the trench recovered boninites and related rocks. Drilling in both areas ended in dolerites inferred to be sheeted intrusive rocks. The basalts apparently erupted immediately after subduction initiation and have compositions similar to those of the most depleted basalts generated by rapid sea-floor spreading at mid-ocean ridges, with little or no slab input. Subsequent melting to generate boninites involved more depleted mantle and hotter and deeper subducted components as subduction progressed and volcanism migrated away from the trench. This volcanic sequence is akin to that recorded by many ophiolites, supporting a direct link between subduction initiation, fore-arc spreading, and ophiolite genesis.
Details
- Title: Subtitle
- Subduction initiation and ophiolite crust: new insights from IODP drilling
- Creators
- Mark K Reagan - University of Iowa [Iowa City]Julian A Pearce - Cardiff UniversityKaterina Petronotis - A&M University, College StationRenat R Almeev - Institut für Mineralogie [Hannover]Aaron J Avery - Florida State University [Tallahassee]C Carvallo - Institut de minéralogie, de physique des matériaux et de cosmochimieTimothy Chapman - University of SydneyGail L Christeson - University of TexasEric C Ferré - Southern Illinois University [Carbondale]Marguerite Godard - Géosciences MontpellierDaniel E Heaton - Oregon State UniversityMaria Kirchenbaur - Universitat KolnWalter Kurz - University of EdinburghSteffen Kutterolf - University of SydneyHongyan Li - Guangzhou Institute of GeochemistryYibing Li - Institute of geology, BeijingKatsuyoshi Michibayashi - Shizuoka UniversitySally Morgan - Department of Geology [Leicester]Wendy R Nelson - Department of Physics, Astronomy, and Geosciences [Towson]Julie Prytulak - Department of Earth Science and Engineering [Imperial College London]Marie Python - Hokkaido University [Sapporo, Japan]Alastair h. f Robertson - University of EdinburghJeffrey g Ryan - University of South FloridaWilliam w Sager - University of HoustonTetsuya Sakuyama - Osaka University [Osaka]John w Shervais - Utah State UniversityKenji Shimizu - JAMSTECScott a Whattam - Korea University, Seoul
- Contributors
- Gm Aigle (Editor)
- Resource Type
- Journal article
- Publication Details
- International geology review, Vol.59(11), pp.1439-1450
- DOI
- 10.1080/00206814.2016.1276482
- ISSN
- 0020-6814
- eISSN
- 1938-2839
- Publisher
- Taylor & Francis
- Grant note
- DOI: 10.13039/100005198, name: Consortium for Ocean Leadership, award: T352A117; DOI: 10.13039/501100001659, name: Deutsche Forschungsgemeinschaft, award: KU-2685/4-1; DOI: 10.13039/501100001691, name: Japan Society for the Promotion of Science, award: 16H06347; DOI: 10.13039/100000001, name: National Science Foundation, award: OCE1558608, OCE1558647, OCE1558689, OCR1558855; name: ANZIC, award: ---; DOI: 10.13039/501100002428, name: Austrian Science Fund, award: P27982-N29; DOI: 10.13039/501100000270, name: NERC, award: NE/M010643; name: German Science Foundation, award: AL 1189/8; name: Japan Drilling Earth Science Consortium, award: ---; DOI: 10.13039/501100004872, name: State Oceanic Administration, award: GASI-GEOGE-02
- Language
- English
- Date published
- 2017
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9983983662602771
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