Petrogenesis of the Mesozoic Magmatic Rocks in Zijinshan Area: Constraints from Zircon Hf Isotope Evidence
详细信息
- 责任者：Liang Qingling (Institute of Mineral Resources ; CAGS ; Beijing 100037 ; China) ; Jiang Sihong
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2013
- 卷期：32(3)
- 关键词：岩浆源 ; magma source ; 铪同位素 ; hafnium isotopes ; 福建 ; Fujian Province
- 页码：p.318-328
- 图表：4 illus., 1 table, 58 refs.
- 分类号：0801
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
Zircon in-situ Lu-Hf isotopic analysis of the Mesozoic magmatic rocks in Zijinshan area was carried out by using the laser ablation multi collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) to reveal their protolith origin. The results show that Middle-Late Jurassic and Early Cretaceous magmatic rocks have different Hf isotopic compositions, suggesting that they originated from different sources. The difference of Hf isotopic compositions between the Middle-Late Jurassic and Early Cretaceous magmatic rocks could be attributed to different magma sources, and these rocks were produced at different stages of the paleo-Pacific Plate subduction beneath the Eurasian continent.