A record of spontaneous subduction initiation in the Izu-Bonin-Mariana arc

被引：190

作者：

Arculus, Richard J. ^{[1
]}

Ishizuka, Osamu ^{[2
,3
]}

Bogus, Kara A. ^{[4
]}

Gurnis, Michael ^{[5
]}

Hickey-Vargas, Rosemary ^{[6
]}

Aljahdali, Mohammed H. ^{[7
]}

Bandini-Maeder, Alexandre N. ^{[8
]}

Barth, Andrew P. ^{[9
]}

Brandl, Philipp A. ^{[1
,10
]}

Drab, Laureen ^{[11
]}

Guerra, Rodrigo do Monte ^{[12
]}

Hamada, Morihisa ^{[13
]}

Jiang, Fuqing ^{[14
]}

Kanayama, Kyoko ^{[15
]}

Kender, Sev ^{[16
,17
]}

Kusano, Yuki ^{[18
]}

Li, He ^{[18
]}

Loudin, Lorne C. ^{[19
]}

Maffione, Marco ^{[20
]}

Marsaglia, Kathleen M. ^{[21
]}

McCarthy, Anders ^{[22
]}

Meffre, Sebastien ^{[23
]}

Morris, Antony ^{[24
]}

Neuhaus, Martin ^{[25
]}

Savov, Ivan P. ^{[26
]}

Sena, Clara ^{[27
]}

Tepley, Frank J., III

van der Land, Cees ^{[28
]}

Yogodzinski, Gene M. ^{[29
]}

Zhang, Zhaohui ^{[30
]}

机构：

[1] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia

[2] Geol Survey Japan AIST, Tsukuba, Ibaraki 3058567, Japan

[3] Japan Agcy Marine Earth Sci & Technol, Res & Dev Ctr Ocean Drilling Sci, Yokosuka, Kanagawa 2370061, Japan

[4] Texas A&M Univ, Int Ocean Discovery Program, College Stn, TX 77845 USA

[5] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[6] Florida Int Univ, Earth & Environm Dept, Miami, FL 33199 USA

[7] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA

[8] Univ Western Australia, Sch Earth & Environm, Ctr Energy Geosci, Perth, WA 6009, Australia

[9] Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA

[10] Univ Erlangen Nurnberg, Geozentrum Nordbayern, D-91054 Erlangen, Germany

[11] Columbia Univ, Lamont Doherty Earth Observ, Borehole Res Grp, Palisades, NY 10964 USA

[12] Univ Vale Rio dos Sinos, Technol Inst Micropaleontol, BR-93022 Sao Leopoldo, Brazil

[13] Japan Agcy Marine Earth Sci & Technol, Dept Solid Earth Geochem, Yokosuka, Kanagawa 2370061, Japan

[14] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

[15] Kanazawa Univ, Coll Sci & Engn, Kanazawa, Ishikawa 9201192, Japan

[16] Univ Nottingham, Sch Geog, Nottingham NG7 2RD, England

[17] British Geol Survey, Keyworth NG12 5GG, Notts, England

[18] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China

[19] Univ New Hampshire, Dept Earth Sci, Durham, NH 03824 USA

[20] Univ Utrecht, Inst Earth Sci, NL-3584 Utrecht, Netherlands

[21] Calif State Univ Northridge, Dept Geol Sci, Northridge, CA 91330 USA

[22] Univ Lausanne, Inst Earth Sci, CH-1015 Lausanne, Switzerland

[23] Univ Tasmania, Sch Earth Sci, Hobart, Tas 7001, Australia

[24] Univ Plymouth, Sch Geog Earth & Environm Sci, Plymouth PL4 8AA, Devon, England

[25] Tech Univ Carolo Wilhelmina Braunschweig, Inst Geophys & Extraterrestr Phys, D-38106 Braunschweig, Germany

[26] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England

[27] Univ Aveiro, Geosci Dept CESAM, P-3810193 Aveiro, Portugal

[28] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[29] Univ S Carolina, Dept Earth & Ocean Sci, Columbia, SC 29208 USA

[30] Nanjing Univ, Earth Sci, Nanjing 210093, Jiangsu, Peoples R China

来源：

NATURE GEOSCIENCE | 2015年 / 8卷 / 09期

基金：

澳大利亚研究理事会;

关键词：

WEST PHILIPPINE BASIN; CONTINENTAL-CRUST; EOCENE; ORIGIN; RECONSTRUCTIONS; MAGMATISM; EVOLUTION; PETROLOGY; HISTORY; BASALTS;

D O I：

10.1038/NGEO2515

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

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.

引用

页码：728 / 733

页数：6

共 50 条

[1] A record of spontaneous subduction initiation in the Izu-Bonin-Mariana arc
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.
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