Geology and zircon dating of trondhjemitic gneiss and amphibolite in the;Tangezhuang area, eastern Shandong | |
Xie HangQiang3; Wan YuSheng; Wang ShiJin1; Liu DunYi; Xie ShiWen; Liu ShouJie; Dung ChunYan; Ma MingZhu | |
刊名 | ACTA PETROLOGICA SINICA |
2013 | |
卷号 | 29期号:2页码:619-629 |
关键词 | Jiaodong terrane SHRIMP zircon dating Neoarchean Paleoproterozoic |
ISSN号 | 1000-0569 |
英文摘要 | similar to 2.5Ga and similar to 1.9Ga metamorphic events are widely recorded all over the North China Craton, being important for understanding the formation and evolution of the craton. Eastern Shandong is located in the eastern North China Craton and contains metamorphic rocks with ca. 2.5Ga and ca. 1.9Ga metamorphic zircon ages. For further constraining the Early Precambrian tectonothermal events in the area, we carried out detailed field observation and SHRIMP U-Pb zircon dating in a road cutting section near Tangezhuang, Laixi County, eastern Shandong. The outcrop consists of interlayered and folded trondhjemitic gneisses and amphibolites. The foliation of the rocks is completely parallel to each other and shows thin interlayer in strong deformation domain, suggesting that thin interlayers of different components cannot be considered as a fact that the protoliths are sedimentary in origin. SHRIMP U-Pb zircon dating yielded an age of 2496 +/- 10Ma (MSWD = 0.45) for magmatic zircons from a trondhjemitic gneiss sample (S1105), with metamorphic rims having ages of ca. 2.5Ga and ca. 1.9Ga. Two amphibolite samples (S1238 and S0812) contain metamorphic zircons with ages of 1842 +/- 3Ma (MSWD = 1. 6) and 1833 +/- 13Ma (MSWD = 1. 0), respectively, but no magmatic zircons have been identified. Combining with previous researches, we suggest that the Late Neoarchean metamorphism widespread over the whole Jiaodong terrane, leading to anatexis and recycling of older crust material, and the Late Paleoproterozoic metamorphism shows a zonal feature as a result of orogenesis. |
学科主题 | 变质岩岩石学 |
WOS关键词 | NORTH CHINA CRATON ; LIAO-JI BELT ; PRECAMBRIAN METAMORPHIC BASEMENT ; PRESSURE PELITIC GRANULITES ; P-T PATH ; JIAOBEI MASSIF ; TECTONIC ; IMPLICATIONS ; CRUSTAL EVOLUTION ; PENINSULA ; GEOCHRONOLOGY |
WOS研究方向 | Geology |
语种 | 中文 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:000317531300019 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.197/handle/2HKVOGP0/40078] |
专题 | 中国地质科学院地质研究所 |
作者单位 | 1.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Inst Geol, Beijing 100037, Peoples R China. 2.Shandong Inst Geol Survey, Jinan 250013, Peoples R China. 3.中国地质科学院地质研究所 |
推荐引用方式 GB/T 7714 | Xie HangQiang,Wan YuSheng,Wang ShiJin,et al. Geology and zircon dating of trondhjemitic gneiss and amphibolite in the;Tangezhuang area, eastern Shandong[J]. ACTA PETROLOGICA SINICA,2013,29(2):619-629. |
APA | Xie HangQiang.,Wan YuSheng.,Wang ShiJin.,Liu DunYi.,Xie ShiWen.,...&Ma MingZhu.(2013).Geology and zircon dating of trondhjemitic gneiss and amphibolite in the;Tangezhuang area, eastern Shandong.ACTA PETROLOGICA SINICA,29(2),619-629. |
MLA | Xie HangQiang,et al."Geology and zircon dating of trondhjemitic gneiss and amphibolite in the;Tangezhuang area, eastern Shandong".ACTA PETROLOGICA SINICA 29.2(2013):619-629. |
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