Subduction initiation and ophiolite crust: new insights from IODP drilling

Mark K. Reagan; Julian A. Pearce; Katerina Petronotis; Renat R. Almeev; Aaron J. Avery; Claire Carvallo; Timothy Chapman; Gail L. Christeson; Eric C. Ferré; Marguerite Godard; Daniel E. Heaton; Maria Kirchenbaur; Walter Kurz; Steffen Kutterolf; Hongyan Li; Yibing Li; Katsuyoshi Michibayashi; Sally Morgan; Wendy R. Nelson; Julie Prytulak; Marie Python; Alastair H.f. Robertson; Jeffrey G. Ryan; William W. Sager; Tetsuya Sakuyama; John W. Shervais; Kenji Shimizu; Scott A. Whattam

doi:10.1080/00206814.2016.1276482

Subduction initiation and ophiolite crust: new insights from IODP drilling

Mark K. Reagan, Julian A. Pearce, Katerina Petronotis, Renat R. Almeev, Aaron J. Avery, Claire Carvallo, Timothy Chapman, Gail L. Christeson, Eric C. Ferré, Marguerite Godard, Daniel E. Heaton, Maria Kirchenbaur, Walter Kurz, Steffen Kutterolf, Hongyan Li, Yibing Li, Katsuyoshi Michibayashi, Sally Morgan, Wendy R. Nelson, Julie PrytulakMarie Python, Alastair H.f. Robertson, Jeffrey G. Ryan, William W. Sager, Tetsuya Sakuyama, John W. Shervais, Kenji Shimizu, Scott A. Whattam

School of Geosciences

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Abstract / Description of output

International 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.

Original language	English
Pages (from-to)	1-12
Journal	International Geology Review
Early online date	16 Jan 2017
DOIs	https://doi.org/10.1080/00206814.2016.1276482
Publication status	E-pub ahead of print - 16 Jan 2017

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10.1080/00206814.2016.1276482

31523190. AAM. Robertson.Accepted author manuscript, 2.28 MB

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Reagan, M. K., Pearce, J. A., Petronotis, K., Almeev, R. R., Avery, A. J., Carvallo, C., Chapman, T., Christeson, G. L., Ferré, E. C., Godard, M., Heaton, D. E., Kirchenbaur, M., Kurz, W., Kutterolf, S., Li, H., Li, Y., Michibayashi, K., Morgan, S., Nelson, W. R., ... Whattam, S. A. (2017). Subduction initiation and ophiolite crust: new insights from IODP drilling. International Geology Review, 1-12. Advance online publication. https://doi.org/10.1080/00206814.2016.1276482

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title = "Subduction initiation and ophiolite crust: new insights from IODP drilling",

abstract = "International 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.",

author = "Reagan, {Mark K.} and Pearce, {Julian A.} and Katerina Petronotis and Almeev, {Renat R.} and Avery, {Aaron J.} and Claire Carvallo and Timothy Chapman and Christeson, {Gail L.} and Ferr{\'e}, {Eric C.} and Marguerite Godard and Heaton, {Daniel E.} and Maria Kirchenbaur and Walter Kurz and Steffen Kutterolf and Hongyan Li and Yibing Li and Katsuyoshi Michibayashi and Sally Morgan and Nelson, {Wendy R.} and Julie Prytulak and Marie Python and Robertson, {Alastair H.f.} and Ryan, {Jeffrey G.} and Sager, {William W.} and Tetsuya Sakuyama and Shervais, {John W.} and Kenji Shimizu and Whattam, {Scott A.}",

year = "2017",

month = jan,

day = "16",

doi = "10.1080/00206814.2016.1276482",

language = "English",

pages = "1--12",

journal = "International Geology Review",

issn = "0020-6814",

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Reagan, MK, Pearce, JA, Petronotis, K, Almeev, RR, Avery, AJ, Carvallo, C, Chapman, T, Christeson, GL, Ferré, EC, Godard, M, Heaton, DE, Kirchenbaur, M, Kurz, W, Kutterolf, S, Li, H, Li, Y, Michibayashi, K, Morgan, S, Nelson, WR, Prytulak, J, Python, M, Robertson, AHF, Ryan, JG, Sager, WW, Sakuyama, T, Shervais, JW, Shimizu, K & Whattam, SA 2017, 'Subduction initiation and ophiolite crust: new insights from IODP drilling', International Geology Review, pp. 1-12. https://doi.org/10.1080/00206814.2016.1276482

TY - JOUR

T1 - Subduction initiation and ophiolite crust: new insights from IODP drilling

AU - Reagan, Mark K.

AU - Pearce, Julian A.

AU - Petronotis, Katerina

AU - Almeev, Renat R.

AU - Avery, Aaron J.

AU - Carvallo, Claire

AU - Chapman, Timothy

AU - Christeson, Gail L.

AU - Ferré, Eric C.

AU - Godard, Marguerite

AU - Heaton, Daniel E.

AU - Kirchenbaur, Maria

AU - Kurz, Walter

AU - Kutterolf, Steffen

AU - Li, Hongyan

AU - Li, Yibing

AU - Michibayashi, Katsuyoshi

AU - Morgan, Sally

AU - Nelson, Wendy R.

AU - Prytulak, Julie

AU - Python, Marie

AU - Robertson, Alastair H.f.

AU - Ryan, Jeffrey G.

AU - Sager, William W.

AU - Sakuyama, Tetsuya

AU - Shervais, John W.

AU - Shimizu, Kenji

AU - Whattam, Scott A.

PY - 2017/1/16

Y1 - 2017/1/16

N2 - International 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.

AB - International 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.

U2 - 10.1080/00206814.2016.1276482

DO - 10.1080/00206814.2016.1276482

M3 - Article

SN - 0020-6814

SP - 1

EP - 12

JO - International Geology Review

JF - International Geology Review

ER -

Subduction initiation and ophiolite crust: new insights from IODP drilling

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