Late Paleoproterozoic tectono-thermal event in the northwestern North China Craton: Evidence from U-Pb dating and O-Hf isotopic compositions of zircons from metasedimentary rocks north of Hohhot City, Inner Mongolia, northern China

doi:10.1016/j.jseaes.2017.09.012

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Late Paleoproterozoic tectono-thermal event in the northwestern North China Craton: Evidence from U-Pb dating and O-Hf isotopic compositions of zircons from metasedimentary rocks north of Hohhot City, Inner Mongolia, northern China
	Wan, Yusheng 1; Peng, Peng 2; Liu, Shoujie 1; Kroner, Alfred 1; Guo, Jinghui 2; Dong, Chunyan 1; Liu, Dunyi 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2018-11-01
卷号	167 页码:152-164
关键词	Erdaowa sequence Paleoproterozoic Zircon dating O-Hf isotopes North China Craton Khondalite
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2017.09.012
英文摘要	The Khondalite Belt is located in the northwestern North China Craton and contains late Paleoproterozoic metasedimentary rocks that generally underwent high-grade metamorphism. Only a few supracrustal sequences experienced low-grade metamorphism such as the Meidaizhao sequence in the Daqingshan area. The Erdaowa sequence north of Hohhot City, Inner Mongolia, is another late Paleoproterozoic supracrustal unit showing relatively low-grade metamorphism compared with the adjacent metapelitic khondalites. It is composed of metavolcanic as well as clastic metasedimentary rocks and marble. It was traditionally subdivided into the Halaqin and Hongshangou Formations. We undertook an integrated study of U-Pb zircon dating and O-Hf isotopic analysis, combined with whole -rock chemistry, on metasedimentary rocks of the Erdaowa sequence in order to understand the relationship between the low- and high-grade rocks and their tectono-thermal history in the Khondalite Belt. Cores and metamorphic domains of detrital zircons from a two-mica schist of the Halaqin Formation have Pb-207/Pb-206 ages of 2.0 and 1.86 Ga, delta(18) values of 6.69-9.45 parts per thousand and 6.68-12.15 parts per thousand, and epsilon(Hf)(t) values of + 7.7 to +16.2 and +3.3 to +20.9, respectively. A recrystallized core, fir-tree domain and altered domain of zircon from a Grt-St-Ky two-mica gneiss have Pb-207/Pb-206 ages of > 2.0 Ga, 1.88 Ga and 1.86 Ga, delta(18) values of 12.10-12.75 parts per thousand, 11.57-12.65%o and 11.57-12.27 parts per thousand, and epsilon(Hf)(t) values of + 0.7 to + 5.4, 2.0 to +4.7 and 2.0 to +0.5, respectively. These data limit the time of deposition of the sedimentary rocks between 2.0 and 1.88 Ga and show a high maturity, similar to khondalites of the same sequence. Compared with previous studies, we infer that the Erdaowa sequence consists of rocks of different origins and metamorphic grades (including khondalites), which were brought up to the same crustal level as tectonic slices due to late Paleoproterozoic tectonic processes.
资助项目	National Natural Science Foundation of China[41472167] ; Major State Basic Research Program of the People's Republic of China[2012CB416600] ; Key Program of the Ministry of Land and Resources of China[121201102000150012]
WOS关键词	ULTRAHIGH-TEMPERATURE METAMORPHISM ; IN-SITU ; LU-HF ; DAQINGSHAN AREA ; KHONDALITE BELT ; SM-ND ; EVOLUTION ; GRANULITES ; ZONE ; GEOCHRONOLOGY
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000451492800011
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of the People's Republic of China ; Major State Basic Research Program of the People's Republic of China ; Key Program of the Ministry of Land and Resources of China ; Key Program of the Ministry of Land and Resources of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of the People's Republic of China ; Major State Basic Research Program of the People's Republic of China ; Key Program of the Ministry of Land and Resources of China ; Key Program of the Ministry of Land and Resources of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of the People's Republic of China ; Major State Basic Research Program of the People's Republic of China ; Key Program of the Ministry of Land and Resources of China ; Key Program of the Ministry of Land and Resources of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of the People's Republic of China ; Major State Basic Research Program of the People's Republic of China ; Key Program of the Ministry of Land and Resources of China ; Key Program of the Ministry of Land and Resources of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89631]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Wan, Yusheng
作者单位	1.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wan, Yusheng,Peng, Peng,Liu, Shoujie,et al. Late Paleoproterozoic tectono-thermal event in the northwestern North China Craton: Evidence from U-Pb dating and O-Hf isotopic compositions of zircons from metasedimentary rocks north of Hohhot City, Inner Mongolia, northern China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,167:152-164.
APA	Wan, Yusheng.,Peng, Peng.,Liu, Shoujie.,Kroner, Alfred.,Guo, Jinghui.,...&Liu, Dunyi.(2018).Late Paleoproterozoic tectono-thermal event in the northwestern North China Craton: Evidence from U-Pb dating and O-Hf isotopic compositions of zircons from metasedimentary rocks north of Hohhot City, Inner Mongolia, northern China.JOURNAL OF ASIAN EARTH SCIENCES,167,152-164.
MLA	Wan, Yusheng,et al."Late Paleoproterozoic tectono-thermal event in the northwestern North China Craton: Evidence from U-Pb dating and O-Hf isotopic compositions of zircons from metasedimentary rocks north of Hohhot City, Inner Mongolia, northern China".JOURNAL OF ASIAN EARTH SCIENCES 167(2018):152-164.