Early Cretaceous highly positive epsilon(Nd) felsic volcanic rocks from the Hinggan Mountains, NE China: origin and implications for Phanerozoic crustal growth
文献类型：期刊论文
| 作者 | Guo, Feng1; Fan, Weiming1; Li, Chaowen1; Gao, Xiaofen1; Miao, Laicheng2 |
| 刊名 | INTERNATIONAL JOURNAL OF EARTH SCIENCES
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 98期号:6页码:1395-1411 |
| 关键词 | Crustal growth Geochemistry Highly positive epsilon(Nd) value Dacite-rhyolite suite Late Mesozoic NE China |
| ISSN号 | 1437-3254 |
| DOI | 10.1007/s00531-008-0362-8 |
| 文献子类 | Article |
| 英文摘要 | An early Cretaceous (135 +/- 2 Ma) felsic volcanic suite of dacite and rhyolite from Huolinhe, NE China is characterized by large ion lithophile element and light REE enrichment and high field strength element (HFSE, e. g., Nb and Ta) and Ti-P depletion, and bulk silicate earth-like Sr [Sr-87/Sr-86(i) = 0.70409-0.70481], quite radiogenic Nd [epsilon(Nd)(t) = +3.98 to +5.88], Pb [e. g., Pb-206/Pb-204(i) = 18.46-18.55] and Hf [epsilon(Hf)(t) similar to+9.2] isotope compositions. Compared with contemporaneous mafic rocks in the region, these felsic rocks have even higher Nd and Hf isotopic ratios, precluding an origin through differentiation of coeval mantle-derived magmas. Isotope calculation results suggest that these magmas were derived from a preexistent mixture composed of mainly juvenile crust (70-80%), and a subordinate recycled crustal component (20-30%) having highly radiogenic Sr and Pb and unradiogenic Nd and Hf. About 25-30% melting of such a mixed source produced the primary dacitic magma. The rhyolites, which have relatively low MgO, FeO*, Al2O3, CaO, TiO2, P2O5, Na2O, Ba, Sr, REE, HFSE and Y, were differentiates of the dacites after removal of a fractional assemblage of hornblende + plagioclase + K-feldspar + apatite + zircon. Considering the prolonged events (from 262 to 130 Ma) that produced such highly positive epsilon(Nd) felsic igneous rocks in the region, we prefer a pre-Mesozoic crustal growth model related to arc accretion associated with the Paleo-Asian Ocean subduction. |
| WOS关键词 | ASIAN OROGENIC BELT ; NORTHERN INNER-MONGOLIA ; SR ISOTOPIC EVIDENCE ; A-TYPE GRANITES ; I-TYPE GRANITES ; U-PB ; NORTHEASTERN CHINA ; GEOCHEMICAL CONSTRAINTS ; LINXI GRANITOIDS ; TRACE-ELEMENTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000269376400013 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70866]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Guo, Feng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Marginal Sea Geol, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Feng,Fan, Weiming,Li, Chaowen,et al. Early Cretaceous highly positive epsilon(Nd) felsic volcanic rocks from the Hinggan Mountains, NE China: origin and implications for Phanerozoic crustal growth[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2009,98(6):1395-1411. |
| APA | Guo, Feng,Fan, Weiming,Li, Chaowen,Gao, Xiaofen,&Miao, Laicheng.(2009).Early Cretaceous highly positive epsilon(Nd) felsic volcanic rocks from the Hinggan Mountains, NE China: origin and implications for Phanerozoic crustal growth.INTERNATIONAL JOURNAL OF EARTH SCIENCES,98(6),1395-1411. |
| MLA | Guo, Feng,et al."Early Cretaceous highly positive epsilon(Nd) felsic volcanic rocks from the Hinggan Mountains, NE China: origin and implications for Phanerozoic crustal growth".INTERNATIONAL JOURNAL OF EARTH SCIENCES 98.6(2009):1395-1411. |
入库方式： OAI收割
来源：地质与地球物理研究所
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