Survival of eclogite xenolith in a Cretaceous granite intruding the Central Dabieshan migmatite gneiss dome (Eastern China) and its tectonic implications

doi:10.1007/s00531-006-0129-z

	Survival of eclogite xenolith in a Cretaceous granite intruding the Central Dabieshan migmatite gneiss dome (Eastern China) and its tectonic implications
	Lin, Wei ; Enami, Masaki ; Faure, Michel ; Schaerer, Urs ; Arnaud, Nicolas
刊名	INTERNATIONAL JOURNAL OF EARTH SCIENCES
	2007-08-01
卷号	96 期号:4 页码:707-724
关键词	eclogite xenolith mesozoic granite radiometric ages exhumation model Dabieshan China
ISSN号	1437-3254
DOI	10.1007/s00531-006-0129-z
文献子类	Article
英文摘要	Investigation of an eclogite xenolith, discovered in a Cretaceous granite from the Central Domain of the Dabieshan massif in eastern China, yields new petrological insights into the high to ultrahigh-pressure metamorphism, experienced by the Qinling-Dabie orogen. Prior to inclusion as a xenolith in the granite during the Early Cretaceous, this eclogite xenolith had recorded a complex metamorphic evolution that complies with subduction and exhumation processes experienced by the continental crust of the South China Block. Well-preserved mineral parageneses substantiate the prograde and retrograde stages revealed by inclusions in porphyroblastic garnet and zoned minerals such as garnet, omphacite and amphibole in the matrix. The relatively low P/T re-equilibration during a late metamorphic stage was textually inferred by the presence of aluminous and calcic-subcalcic amphiboles such as katophorite, edenite, taramite and pargasite as main matrix phases. According to our U/Pb, Rb/Sr and new Ar-40/Ar-39 geochronological results, namely109 +/- 1 and 112 +/- 2 Ma plateau ages for muscovite and amphiboles, respectively, two successive but distinct cooling stages account for the thermal history of the granite-migmatite gneiss dome that forms the Central Dabieshan Domain. We argue that prior to the Cretaceous doming, the Central Dabieshan Domain experienced a tectono-metamorphic evolution similar to that observed in the high-pressure to ultra high-pressure units developed in the Southern Dabieshan Domain and Hong'an massif.
WOS关键词	HIGH-PRESSURE ROCKS ; GLAUCOPHANE-BEARING ECLOGITES ; SOUTH CHINA ; METAMORPHIC TERRANE ; CRUSTAL STRUCTURE ; CENTRAL SHIKOKU ; SAMBAGAWA BELT ; ZIRCON AGES ; GARNET ; SHAN
WOS研究方向	Geology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000247974900007
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/68146]
专题	中国科学院地质与地球物理研究所
通讯作者	Lin, Wei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China 2.Nagoya Univ, Dept Earth & Planetary Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan 3.Univ Orleans, Inst Sci Terre Orleans, F-45067 Orleans, France 4.Univ Nice, UMR Geosci Azur, Parc Valrose, Nice, France 5.Univ Montpellier 2, UMR Dylith, F-34060 Montpellier 5, France
推荐引用方式 GB/T 7714	Lin, Wei,Enami, Masaki,Faure, Michel,et al. Survival of eclogite xenolith in a Cretaceous granite intruding the Central Dabieshan migmatite gneiss dome (Eastern China) and its tectonic implications[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2007,96(4):707-724.
APA	Lin, Wei,Enami, Masaki,Faure, Michel,Schaerer, Urs,&Arnaud, Nicolas.(2007).Survival of eclogite xenolith in a Cretaceous granite intruding the Central Dabieshan migmatite gneiss dome (Eastern China) and its tectonic implications.INTERNATIONAL JOURNAL OF EARTH SCIENCES,96(4),707-724.
MLA	Lin, Wei,et al."Survival of eclogite xenolith in a Cretaceous granite intruding the Central Dabieshan migmatite gneiss dome (Eastern China) and its tectonic implications".INTERNATIONAL JOURNAL OF EARTH SCIENCES 96.4(2007):707-724.