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Lithotectonic elements of Precambrian basement in the North China Craton: Review and tectonic implications
文献类型：期刊论文
| 作者 | Zhao, Guochun1; Zhai, Mingguo2 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2013-05-01 |
| 卷号 | 23期号:4页码:1207-1240 |
| 关键词 | Archean North China Craton Mantle plume Paleoproterozoic Continent-continent collision |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2012.08.016 |
| 文献子类 | Article |
| 英文摘要 | The North China Craton (NCC) consists of Archean to Paleoproterozoic basement overlain by Mesoproterozoic to Cenozoic cover. Minor Eoarchean to Mesoarchean basement rocks are locally present in the eastern part of the NCC, but little is known about their extent, nature and tectonic evolution due to widespread reworking by later events. The Neoarchean basement in the NCC was formed during two distinct periods: 2.8-2.7 Ga and 2.6-2.5 Ga, of which the former is considered as a major period of juvenile crustal growth in the NCC as evidenced by Nd and zircon Hf isotopic data, though the 2.8-2.7 Ga rocks are not widely exposed. The 2.6-2.5 Ga rocks make up similar to 80% of the Precambrian basement of the NCC and can be divided into high-grade gneiss complexes and low- to medium-grade granite-greenstone belts that are widespread over the whole NCC, seeming to support a notion that the cratonization of the NCC occurred at similar to 2.5 Ga. However, the 2.6-2.5 Ga rocks in the eastern and western parts of the NCC (Eastern and Western Blocks) are different from those similar-aged rocks in the central part (Trans-North China Orogen), with the former dominated by gneiss domes and metamorphosed at similar to 2.5 Ga, characterized by anticlockwise P-T paths involving isobaric cooling, reflecting an origin related to the underplating of mantle-derived magmas, whereas the latter, which are defined by strike-slip ductile shear zones, large-scale thrusting and folding, and transcurrent tectonics locally with sheath folds, were metamorphosed at similar to 1.85 Ga, characterized by clockwise P-T paths involving isothermal decompression, consistent with subduction and continent-continent collision settings. In addition, komatiites/komatiitic rocks are present in the granite-greenstone belts in the eastern and western parts of the NCC, but generally are absent in the central part. These differences imply that the 2.6-2.5 Ga basement rocks in the eastern and western parts of the NCC formed under different tectonic settings from those in the central part. Although both magmatic arc and mantle plume models can be used to explain the tectonic setting of the 2.6-2.5 Ga basement rocks in the eastern part of the NCC, a mantle plume model is favored as it can reasonably interpret: (1) the exceptionally large exposure of granitoid intrusions that formed over a short time period (2.55-2.50 Ga), without systematic age progression across a similar to 800 km wide block; (2) generation of komatiitic magmas with eruption temperatures as high as similar to 1650 degrees C; (3) dominant domal structures; (4) bimodal volcanic assemblages in the greenstone sequences; (5) affinities of mafic rocks to continental tholeiitic basalts; and (6) metamorphism with anticlockwise P-T paths involving isobaric cooling. In contrast, the 2.6-2.5 Ga high-grade gneiss terranes and low-grade granite-greenstone belts in the central part of the NCC exhibit the same structural and metamorphic characteristics as those of Paleoproterozoic lithological elements that typify active continental margin arcs and continent-continent collisional belts. |
| WOS关键词 | SHRIMP U-PB ; HIGH-PRESSURE GRANULITES ; EASTERN HEBEI PROVINCE ; LIAO-JI BELT ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; ARCHEAN CRUSTAL EVOLUTION ; GRANITE-GREENSTONE TERRAIN ; WESTERN SHANDONG PROVINCE ; ND ISOTOPIC COMPOSITIONS ; QINLING OROGENIC BELT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000318258500002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Hong Kong RGC GRF(HKU7060/12P) ; Hong Kong RGC GRF(HKU7060/12P) ; Chinese NSFC(41190075 ; Chinese NSFC(41190075 ; 40730315 ; 40730315 ; 40872123) ; 40872123) ; Hong Kong RGC GRF(HKU7060/12P) ; Hong Kong RGC GRF(HKU7060/12P) ; Chinese NSFC(41190075 ; Chinese NSFC(41190075 ; 40730315 ; 40730315 ; 40872123) ; 40872123) ; Hong Kong RGC GRF(HKU7060/12P) ; Hong Kong RGC GRF(HKU7060/12P) ; Chinese NSFC(41190075 ; Chinese NSFC(41190075 ; 40730315 ; 40730315 ; 40872123) ; 40872123) ; Hong Kong RGC GRF(HKU7060/12P) ; Hong Kong RGC GRF(HKU7060/12P) ; Chinese NSFC(41190075 ; Chinese NSFC(41190075 ; 40730315 ; 40730315 ; 40872123) ; 40872123) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/86574]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao, Guochun |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Guochun,Zhai, Mingguo. Lithotectonic elements of Precambrian basement in the North China Craton: Review and tectonic implications[J]. GONDWANA RESEARCH,2013,23(4):1207-1240. |
| APA | Zhao, Guochun,&Zhai, Mingguo.(2013).Lithotectonic elements of Precambrian basement in the North China Craton: Review and tectonic implications.GONDWANA RESEARCH,23(4),1207-1240. |
| MLA | Zhao, Guochun,et al."Lithotectonic elements of Precambrian basement in the North China Craton: Review and tectonic implications".GONDWANA RESEARCH 23.4(2013):1207-1240. |
入库方式： OAI收割
来源：地质与地球物理研究所
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