Middle Neoarchean magmatism in western Shandong, North China Craton: SHRIMP zircon dating and LA-ICP-MS Hf isotope analysis
Middle Neoarchean magmatism in western Shandong, North China Craton: SHRIMP zircon dating and LA-ICP-MS Hf isotope analysis
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华北克拉通鲁西中新太古代岩浆活动:SHRIMP锆石定年及LA-ICP-MS Hf同位素分析
DOI:
10.1016/j.precamres.2014.07.016
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发表时间:
2014-12
影响因子:
3.8
通讯作者:
Wan YS, Dong CY, Wang SJ, Kröner A, Xie HQ, Ma MZ,
中科院分区:
文献类型:
--
作者:
Wan YS, Dong CY, Wang SJ, Kröner A, Xie HQ, Ma MZ,
Western Shandong Province is a typical area of the North China Craton (NCC) where Neoarchean plutonic and supracrustal rocks are widely distributed. Early studies documented that ∼2.7 Ga and ∼2.5 Ga magmato-tectono-thermal events are well developed in the area. Here we report SHRIMP U–Pb ages and Hf-in-zircon isotopic data from ten samples of different magmatic rock types including hornblendite, gneissic tonalite, gneissic trondhjemite and gneissic granite. Magmatic zircon grains have207Pb/206Pb ages ranging from 2667 to 2598 Ma. Some rocks contain ∼2.5 Ga metamorphic rims and ∼2.7 Ga zircon cores. The magmatic zircon grains haveɛHf(t) values and Hf crustal model ages of −1.1 to +11.3 and 3.02–2.4 Ga, respectively. Combined with an earlier study, our main conclusions are that the middle Neoarchean rocks mainly occur together with early Neoarchean rocks in the northeastern portion of the central belt. Juvenile additions to continental crust and crustal recycling played important roles in the middle Neoarchean of western Shandong Province, and the entire Neoarchean tectonic evolution can be divided into middle to early Neoarchean (2.75–2.6 Ga) and late Neoarchean (2.6–2.5 Ga) events.
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影响因子:
3.8
作者:
Jian, Ping;Kroener, Alfred;Windley, Brian F.;Zhang, Qi;Zhang, Wei;Zhang, Liqao
通讯作者:
Zhang, Liqao
影响因子:
3.8
作者:
Wei Wang;Enxiu Yang;M. Zhai;Shijin Wang;M. Santosh;L. Du;H. Xie;Bin Lv;Y. Wan
通讯作者:
Wei Wang;Enxiu Yang;M. Zhai;Shijin Wang;M. Santosh;L. Du;H. Xie;Bin Lv;Y. Wan
影响因子:
3.5
作者:
Jaana Halla
通讯作者:
Jaana Halla
DOI:
--
发表时间:
2005
期刊:
--
影响因子:
--
作者:
Du Lilin;Zhuang Yu-xun;Yang Chong-hui;Wang Yusheng;Wang Xinshe
通讯作者:
Du Lilin;Zhuang Yu-xun;Yang Chong-hui;Wang Yusheng;Wang Xinshe
DOI:
--
发表时间:
2010
期刊:
Acta Geological Sinica
影响因子:
--
作者:
Du Lilin
通讯作者:
Du Lilin