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Title: Site U1442
Contributor(s): Reagan, M K (author); Pearce, J A (author); Petronotis, K (author); Almeev, R (author); Avery, A A (author); Carvallo, C (author); Christeson, G L (author); Ferre, E C (author); Godard, M (author); Heaton, D E (author); Kirchenbaur, M (author); Kurz, W (author); Kutterolf, S (author); Li, H Y (author); Li, Y (author); Michibayashi, K (author); Morgan, S (author); Nelson, W R (author); Prytulak, J (author); Python, M (author); Robertson, A H F (author); Ryan, J G (author); Sager, W W (author); Sakuyama, T (author); Shervais, J W (author); Shimizu, K (author); Whattam, S A (author); Chapman, T  (author)orcid 
Publication Date: 2015-09-29
Open Access: Yes
DOI: 10.14379/iodp.proc.352.106.2015Open Access Link
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Abstract: The Izu-Bonin-Mariana (IBM) fore arc is believed to have formed during the period of seafloor spreading that accompanied the rapid rollback and sinking of the newly subducting Pacific plate immediately following subduction initiation at 51–52 Ma (Ishizuka et al., 2011). The deepest and oldest volcanic rocks appear to be fore-arc basalt (FAB), a distinctive type of volcanic rock akin to mid-ocean-ridge basalt (MORB) that has been recovered during dredging and submersible sampling of the IBM fore arc (Reagan et al., 2010), as well as by drilling at Sites U1440 and U1441. More strongly subduction-affected magnesian lavas called boninites also erupted in the IBM nascent arc. These lavas are named after the type section on the island of Chichijima in the Bonin Islands (Umino, 1986) and were also drilled at Site U1439.
Publication Type: Book Chapter
Grant Details: ARC/LE140100047
Source of Publication: Proceedings of the International Ocean Discovery Program, v.352, p. 1-43
Publisher: International Ocean Discovery Program
Field of Research (FOR): 040304 Igneous and Metamorphic Petrology
040202 Inorganic Geochemistry
Socio-Economic Objective (SEO): 970104 Expanding Knowledge in the Earth Sciences
HERDC Category Description: B1 Chapter in a Scholarly Book
Appears in Collections:Book Chapter
School of Environmental and Rural Science

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