globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2515
论文题名:
A record of spontaneous subduction initiation in the Izu-Bonin-Mariana arc
作者: Arculus R.J.; Ishizuka O.; Bogus K.A.; Gurnis M.; Hickey-Vargas R.; Aljahdali M.H.; Bandini-Maeder A.N.; Barth A.P.; Brandl P.A.; Drab L.; Do Monte Guerra R.; Hamada M.; Jiang F.; Kanayama K.; Kender S.; Kusano Y.; Li H.; Loudin L.C.; Maffione M.; Marsaglia K.M.; McCarthy A.; Meffre S.; Morris A.; Neuhaus M.; Savov I.P.; Sena C.; Tepley Iii F.J.; Van Der Land C.; Yogodzinski G.M.; Zhang Z.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期:9
起始页码: 728
结束页码: 733
语种: 英语
Scopus关键词: basalt ; basement rock ; biostratigraphy ; buoyancy ; compression ; dike ; fault ; geochemistry ; igneous rock ; lava ; lithosphere ; magmatism ; mantle source ; mid-ocean ridge ; plate tectonics ; sediment analysis ; slab ; source rock ; subduction ; Izu-Bonin Arc ; Pacific Ocean ; Philippine Sea
英文摘要: The initiation of tectonic plate subduction into the mantle is poorly understood. If subduction is induced by the push of a distant mid-ocean ridge or subducted slab pull, we expect compression and uplift of the overriding plate. In contrast, spontaneous subduction initiation, driven by subsidence of dense lithosphere along faults adjacent to buoyant lithosphere, would result in extension and magmatism. The rock record of subduction initiation is typically obscured by younger deposits, so evaluating these possibilities has proved elusive. Here we analyse the geochemical characteristics of igneous basement rocks and overlying sediments, sampled from the Amami Sankaku Basin in the northwest Philippine Sea. The uppermost basement rocks are areally widespread and supplied via dykes. They are similar in composition and age-as constrained by the biostratigraphy of the overlying sediments-to the 52-48-million-year-old basalts in the adjacent Izu-Bonin-Mariana fore-arc. The geochemical characteristics of the basement lavas indicate that a component of subducted lithosphere was involved in their genesis, and the lavas were derived from mantle source rocks that were more melt-depleted than those tapped at mid-ocean ridges. We propose that the basement lavas formed during the inception of Izu-Bonin-Mariana subduction in a mode consistent with the spontaneous initiation of subduction.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106345
Appears in Collections:气候减缓与适应
科学计划与规划

Files in This Item:

There are no files associated with this item.


作者单位: Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; Geological Survey of Japan/AIST, Central 7 1-1-1 Higashi, Tsukuba, Ibaraki, Japan; Research and Development Center for Ocean Drilling Science, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, Japan; International Ocean Discovery Program, Texas A and M University, 1000 Discovery Drive, College Station, TX, United States; Division of Geological and Planetary Sciences, California Institute of Technology, MC 2520-21, 1200 East California Boulevard, Pasadena, CA, United States; Earth and Environment Department, Florida International University, Modesto Maidique Campus, AHC5-394, Miami, FL, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, 108 Carraway Building, Woodward Street, Tallahassee, FL, United States; Center for Energy Geoscience, School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Perth, WA, Australia; Department of Earth Sciences, Indiana University-Purdue University, 723 West Michigan Street, Indianapolis, IN, United States; Geozentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schlossgarten 5, Erlangen, Germany; Borehole Research Group, Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY, United States; Technological Institute of Micropaleontology, University of Vale Do Rio Dos Sinos, Avenue Unisinos, 950-B Cristo Rei, Sao Leopoldo, Brazil; Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, Japan; Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, China; College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, Japan; School of Geography, University of Nottingham, University Park, Nottingham, United Kingdom; British Geological Survey, Keyworth, Nottingham, United Kingdom; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 511 Kehua Street, Guangzhou, China; Department of Earth Sciences, University of New Hampshire, 214 James Hall, 56 College Road, Durham, NH, United States; Institute of Earth Sciences, Utrecht University, Budapestlaan 17, Utrecht, Netherlands; Department of Geological Sciences, California State University, 18111 Nordhoff Street, Northridge, CA, United States; Institute of Earth Sciences, University of Lausanne, Geopolis, Lausanne, Switzerland; School of Earth Sciences, University of Tasmania, Hobart, TAS, Australia; School of Geography, Earth and Environmental Sciences, Plymouth University, Drake Circus, Plymouth, United Kingdom; Institut für Geophysik und Extraterrestrische Physik, Technische Universität Braunschweig, Medelssohnstrasse 3, Braunschweig, Germany; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Geosciences Department/CESAM, Universidade de Aveiro, Campus Universitario Santiago, Aveiro, Portugal; College of Earth, Ocean and Atmospheric Sciences, Oregon State University, 104 CEOAS Administration Building, Corvallis, OR, United States; School of Civil Engineering and Geosciences, University of Newcastle, Newcastle upon Tyne, United Kingdom; Department of Earth AndOcean Sciences, University of South Carolina, 710 Sumter Street, EWSC617, Columbia, SC, United States; Earth Sciences, Nanjing University, 22 Hankou Road, Nanjing, China

Recommended Citation:
Arculus R.J.,Ishizuka O.,Bogus K.A.,et al. A record of spontaneous subduction initiation in the Izu-Bonin-Mariana arc[J]. Nature Geoscience,2015-01-01,8(9)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Arculus R.J.]'s Articles
[Ishizuka O.]'s Articles
[Bogus K.A.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Arculus R.J.]'s Articles
[Ishizuka O.]'s Articles
[Bogus K.A.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Arculus R.J.]‘s Articles
[Ishizuka O.]‘s Articles
[Bogus K.A.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.