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Geochronologic evidence for a cold arc-continent collision: The Taiwan orogeny

文献类型：期刊论文

作者Wintsch, Robert P.1; Yang, Huai-Jen2; Li, Xian-Hua3; Tung, Kuo-An4
刊名LITHOS
出版日期2011-07-01
卷号125期号:1-2页码:236-248
关键词Metamorphic zircon Taiwan orogeny Geochronology Thermochronology Arc-continent collision
ISSN号0024-4937
DOI10.1016/j.lithos.2011.02.009
文献子类Article
英文摘要In order to constrain the tectonic consequences of the collision of the Luzon arc with the SE Chinese continental margin during the Neogene Taiwan orogeny, we assess the thermal history of the poly-metamorphic para-autochtthonous rocks of the continental margin in Taiwan. To accomplish this we report a new SIMS U-Pb age of prograde metamorphic zircons and interpret this age in the context of existing geochronology and thermochronology. Zircons extracted from the Fenniaolin amphibolite near Nanao, Taiwan, in the contact aureole of a granodiorite, are interpreted to have crystallized during the first lower amphibolite fades prograde metamorphism based on [1] their equant shape rather than the prismatic shape typical of magmatic zircon, [2] their microcrystalline or "micro-saccharoidal" aggregate structure and patchy and sector zoning rather than oscillatory zoning visible in cathodoluminescent imaging, [3] their low concentrations of U (most<40 ppm), [4] their chlorite inclusions, and [5] their inclusion within prograde metamorphic amphiboles. The apparent absence of magmatic zircon is also consistent with the low Zr concentrations of the N-MORB metabasaltic protolith. SIMS analyses of 18 zircon grains yield a concordant Pb-206/U-238 age ge of 86 +/- 1 Ma, analytically indistinguishable from the age of the adjacent pluton that caused the contact metamorphism. We thus conclude that the contact metamorphism of this intrusion caused the first lower amphibolite facies metamorphism of these rocks in the mid-Cretaceous.
WOS关键词TANANAO METAMORPHIC COMPLEX ; MOUNTAIN BELT ; U-PB ; LOW-TEMPERATURE ; TRACE-ELEMENT ; ZIRCON GROWTH ; CENTRAL RANGE ; SOUTH CHINA ; ROCKS ; SUBDUCTION
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000292663600016
出版者ELSEVIER SCIENCE BV
资助机构National Science Council(95-2116-M-006-010 ; National Science Council(95-2116-M-006-010 ; NSF(ID-0803314 ; NSF(ID-0803314 ; 96-2116-M-006-007) ; 96-2116-M-006-007) ; EAR-1019682) ; EAR-1019682) ; National Science Council(95-2116-M-006-010 ; National Science Council(95-2116-M-006-010 ; NSF(ID-0803314 ; NSF(ID-0803314 ; 96-2116-M-006-007) ; 96-2116-M-006-007) ; EAR-1019682) ; EAR-1019682) ; National Science Council(95-2116-M-006-010 ; National Science Council(95-2116-M-006-010 ; NSF(ID-0803314 ; NSF(ID-0803314 ; 96-2116-M-006-007) ; 96-2116-M-006-007) ; EAR-1019682) ; EAR-1019682) ; National Science Council(95-2116-M-006-010 ; National Science Council(95-2116-M-006-010 ; NSF(ID-0803314 ; NSF(ID-0803314 ; 96-2116-M-006-007) ; 96-2116-M-006-007) ; EAR-1019682) ; EAR-1019682)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74825]  
专题中国科学院地质与地球物理研究所
通讯作者Wintsch, Robert P.
作者单位1.Indiana Univ, Dept Geol Sci, Bloomington, IN 47405 USA
2.Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan
3.CAS, Inst Geol & Geophys, Beijing 1000029, Peoples R China
4.Museum Nat Sci, Taichung, Taiwan
推荐引用方式
GB/T 7714		 Wintsch, Robert P.,Yang, Huai-Jen,Li, Xian-Hua,et al. Geochronologic evidence for a cold arc-continent collision: The Taiwan orogeny[J]. LITHOS,2011,125(1-2):236-248.
APA Wintsch, Robert P.,Yang, Huai-Jen,Li, Xian-Hua,&Tung, Kuo-An.(2011).Geochronologic evidence for a cold arc-continent collision: The Taiwan orogeny.LITHOS,125(1-2),236-248.
MLA Wintsch, Robert P.,et al."Geochronologic evidence for a cold arc-continent collision: The Taiwan orogeny".LITHOS 125.1-2(2011):236-248.

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来源：地质与地球物理研究所

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