Archean TTGs and sanukitoids from the Jiaobei terrain, North China craton: Insights into crustal growth and mantle metasomatism
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- 作者：Neng Jianga ; jiangneng@mail.iggcas.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Jinghui Guoa ; Wenbo Fana ; Jun Hua ; Keqing Zongb ; Shuangquan Zhangc
- 关键词：North China craton ; Archean ; TTG ; Sanukitoids ; Crustal growth ; Mantle metasomatism
- 刊名：Precambrian Research
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：281
- 期：Complete
- 页码：656-672
- 全文大小：6354 K
文摘
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Archean magmatic events took place in Jiaobei terrane at ∼2.9, ∼2.7 and ∼2.5 Ga.
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The ∼2.9 and ∼2.5 Ga rocks represent two periods of crustal growth.
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The ∼2.7 Ga TTGs most likely reflect reworking of pre-existing ∼3.0 Ga crust.
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The ∼2.5 Ga sanukitoids are probably derived from a metasomatized mantle source.
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The mantle is likely metasomatized by slab-derived fluids, not solely by TTG melts.