Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo) deposit, northeast China: Implications for regional tectonic evolution

Sun，Yong gang1,2; Li，Bi le1; Zhao，Zhong hai2; Sun，Feng yue1; Ding，Qing feng1; Chen，Xu sheng3; Li，Jie biao4,5; Qian，Ye1,6; Li，Yu jin1,6

2022-03-01

10.1016/j.gsf.2021.101344

Geoscience Frontiers   影响因子和分区

1674-9871

Multi-stage igneous rocks developed in the recently discovered Huoluotai Cu-(Mo) deposit provide new insights into the controversial late Mesozoic geodynamic evolution of the northern segment of the Great Xing'an Range (NSGXR). Zircon U-Pb dating suggests that the monzogranite, ore-bearing granodiorite porphyry, diorite porphyry, and granite porphyry in the deposit were emplaced at 179.5 ± 1.6, 148.9 ± 0.9, 146.1 ± 1.3, and 142.2 ± 1.5 Ma, respectively. The Re-Os dating of molybdenite yielded an isochron age of 146.9 ± 2.3 Ma (MSWD = 0.27). The Jurassic adakitic monzogranite and granodiorite porphyry are characterized by high SiO and NaO contents, low KO/NaO ratios, low MgO, Cr, and Ni contents, low zircon ε(t) values relative to depleted mantle, and relatively high Th contents. They were produced by partial melting of a subducted oceanic slab, with involvement of marine sediments in the magma source and limited interaction with mantle peridotites during magma ascent. The Late Jurassic diorite porphyry is characterized by moderate SiO contents, high MgO, Cr, and Ni contents, and positive dominated ε(t) values, indicating it was produced by partial melting of a subduction-modified lithospheric mantle wedge and underwent limited crustal contamination during magma ascent. The early Early Cretaceous adakitic granite porphyry shows high SiO and KO contents and KO/NaO ratios, low MgO, Cr, and Ni contents, enriched Sr–Nd isotopic compositions, and slightly positive zircon ε(t) values, suggesting it was produced by partial melting of thickened mafic lower crust. The NSGXR experienced a tectonic history that involved flat-slab subduction (200–160 Ma), and tearing and collapse (150–145 Ma) of the Mongol–Okhotsk oceanic lithosphere. The period of magmatic quiescence from ca. 160 to 150 Ma was a response to flat-slab subduction of the Mongol–Okhotsk oceanic lithosphere. Crustal thickening in the NSGXR (145–133 Ma) was due to the collision between the Amuria Block and the Siberian Craton.

Flat-slab subduction Geochemistry Huoluotai Cu-(Mo) deposit Mongol–Okhotsk Ocean Zircon U-Pb dating

SCI

英语

其他

Natural Science Foundation of Jilin Province[20180101089JC] ; Key Projects of Science and Technology Development Plan of Jilin Province[20100445] ; National Key R&D Program of China[2017YFC0601304] ; Natural Science Foundation of Liaoning Province[2020-BS-258] ; Department of Education of Liaoning Province[LJ2020JCL010] ; Discipline Innovation Team Project of Liaoning Technical University[LNTU20TD-14] ; Graduate Innovation Research Project of Jilin University[101832020CX201] ; Heilongjiang Research Project of Land and Resources[201605,201704]

Geology

Geosciences, Multidisciplinary

WOS:000773439700001

CHINA UNIV GEOSCIENCES, BEIJING

2-s2.0-85122702124

Scopus

1.College of Earth Sciences,Jilin University,Changchun,130061,China
2.College of Mining,Liaoning Technical University,Fuxin,123000,China
3.Qiqihaer Institute of Geological Exploration,Heilongjiang,161006,China
4.School of Environment,Harbin Institute of Technology,Harbin,150090,China
5.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
6.Key Laboratory of Mineral Resources Evaluation in Northeast Asia,Ministry of Land and Resources,Changchun,130061,China

Sun，Yong gang,Li，Bi le,Zhao，Zhong hai,et al. Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo) deposit, northeast China: Implications for regional tectonic evolution[J]. Geoscience Frontiers,2022,13(2).

Sun，Yong gang.,Li，Bi le.,Zhao，Zhong hai.,Sun，Feng yue.,Ding，Qing feng.,...&Li，Yu jin.(2022).Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo) deposit, northeast China: Implications for regional tectonic evolution.Geoscience Frontiers,13(2).

Sun，Yong gang,et al."Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo) deposit, northeast China: Implications for regional tectonic evolution".Geoscience Frontiers 13.2(2022).