Advanced Search

Indexed by SCI、CA、РЖ、PA、CSA、ZR、etc .

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China

Zuomin Zhou Changqian Ma Caifu Xie Lianxun Wang Yuanyuan Liu Wei Liu

Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China[J]. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
引用本文: Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China[J]. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
Citation: Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3

Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China

doi: 10.1007/s12583-016-0677-3

Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China

计量
  • 文章访问数:  658
  • HTML全文浏览量:  15
  • PDF下载量:  167
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-06-12
  • 修回日期:  2016-06-12
  • 刊出日期:  2016-06-12

Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China

doi: 10.1007/s12583-016-0677-3

摘要: The South China Block is characterized by the large-scale emplacement of felsic magmas and giant ore deposits during the Yanshanian. We present zircon Hf isotopic compositions, whole-rock major and trace element compositions of the Fengshun complex, located in eastern Guangdong Prov- ince, South China. The Fengshun complex is a multi-stage magmatic intrusion. It is composed of two main units, i.e., the Mantoushan (MTS) syeno-monzogranites, alkali feldspar granites and the Hulutian (HLT) alkali feldspar granites. LA-ICPMS zircon dating shows that the complex emplaced in 166–161 and 139±2 Ma, respectively. Geochemically, the MTS granites show relatively various geochemical compositions with low REE contents (87.76×10 -6 –249.71×10 -6 ), Rb/Sr ratios (1.19–58.93), pronounced Eu negative anomaly (0.01–0.37) and low Nb/Ta ratios (2.40–6.82). In contrast, the HLT granites exhibit relatively stable geochemical characteristics with high REE contents (147.35×10 -6 – 282.17×10 -6 ), Rb/Sr ratios (2.05–10.30) and relatively high Nb/Ta ratios (4.45–13.00). The isotopic data of the MTS granites display relatively enriched values, with I Sr varying from 0.708 2 to 0.709 7, ε Nd (t) from -7.8 to -6.9 and ε Hf (t) from -7.4 to -3.2, in comparison with those of the HLT which are I Sr =0.703 05–0.704 77, ε Nd (t)=-5– -3.4 and ε Hf (t)=-0.7–1.8). The two-stage model ages of the MTS granites (T 2DM (Nd)=1.51–1.59 Ga and T 2DM (Hf)=1.26–1.48 Ga) are also higher than those of the HLT granites (T 2DM (Nd)=1.21–1.34 Ga and T 2DM (Hf)=0.96–1.10 Ga). Thus the MTS and HLT granites might originate from different sources. The former is more likely derived from partial melting of Meso-Proterozoic basement triggered by upwel- ling of asthenosphere and/or underplate of the basaltic magma and then extensive fractional crystalli- sation, similar to the genesis of Early Yanshanian granitoids of the EW-trending tectono-magmatism belt in the Nanling range. In comparison, the latter might have involved with asthenosphere component, similar to the Early Cretaceous granitoids of NE-NNE-trending granitoid-volcanic belt in coastal region, southeastern China. We propose that the MTS granites were mainly formed in Paleo-Tethyan post-orogenic extensional tectonic setting whereas the HLT granites were formed in the back-arc exten- sional tectonic setting. The period at 139 Ma represents the initial time of roll-back of the paleo-Pacific Plate in SE-trending.

English Abstract

Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China[J]. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
引用本文: Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China[J]. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3
Citation: Zuomin Zhou, Changqian Ma, Caifu Xie, Lianxun Wang, Yuanyuan Liu, Wei Liu. Genesis of Highly Fractionated I-Type Granites from Fengshun Complex: Implications to Tectonic Evolutions of South China. Journal of Earth Science, 2016, 18(3): 444-460. doi: 10.1007/s12583-016-0677-3

目录

    /

    返回文章
    返回