Journal
ELEMENTS
Volume 10, Issue 2, Pages 115-120Publisher
MINERALOGICAL SOC AMER
DOI: 10.2113/gselements.10.2.115
Keywords
lzu-Bonin-Mariana arc; subduction initiation; forearc stratigraphy; suprasubduction zone ophiolite; boninite; geochronology
Categories
Funding
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
- Atmosphere and Ocean Research Institute, University of Tokyo
- JSPS [22540473]
- NSF-MARGINS [EAR0840862]
- Grants-in-Aid for Scientific Research [22540473, 25287132, 25287133, 24684037, 25610154, 25302012] Funding Source: KAKEN
Ask authors/readers for more resources
Recent geological and geophysical surveys in the lzu-Bonin-Mariana forearc have revealed the occurrence on the seafloor of oceanic crust generated in the initial stages of subduction and the earliest stage of island arc formation. The earliest magmatism after subduction initiation generated forearc basalts, and subsequently, boninitic and tholeiitic to calc-alkaline lavas were produced. Collectively, these rocks make up the extrusive sequence of the Izu-Bonin-Mariana forearc oceanic crust. This volcanic stratigraphy and its time-progressive development are analogous to those documented from many suprasubduction zone ophiolites. Most suprasubduction zone ophiolites may be on-land fragments of forearc oceanic crust, produced during the initiation of subduction and the early stages of island arc development.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available