Geochemical Characteristics and LA-ICP-MS Zircon U-Pb Dating of the Late Permian Diorite in Hanggale, Alax Right Banner, Inner Mongolia

LIU Zhi-bo; ZHANG Wei-jie

Northwestern Geology > 2014 > 47(1): 84-95.

LIU Zhi-bo, ZHANG Wei-jie. Geochemical Characteristics and LA-ICP-MS Zircon U-Pb Dating of the Late Permian Diorite in Hanggale, Alax Right Banner, Inner Mongolia[J]. Northwestern Geology, 2014, 47(1): 84-95.

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Geochemical Characteristics and LA-ICP-MS Zircon U-Pb Dating of the Late Permian Diorite in Hanggale, Alax Right Banner, Inner Mongolia

China University of Geosciences, Beijing 100083, China

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Received Date: January 04, 2014
Revised Date: February 19, 2014
Available Online: July 28, 2022
Published Date: March 04, 2014

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Abstract

Late Permian diorite of Hanggale is characterized by enrichment of LREE, and positive Eu anomalies, implying an I-type granite. The accumulation of Rb, Sr, Hf elements and the depletion of Nb, P, Ti elements shows that such arc granite has features of intrusive rocks relating to subduction. In the R1-R2 diagram, most of the samples are concentrated in the pre-collision granite area. In the Nb-Y diagram, the samples fall into the area of the volcanic arc-syncollisional granite. In the Rb-(Y+Nb) diagram, the samples lie in the area of volcanic arc granite. In the Rb-Hf-Ta diagram, the samples all fall into the arc system. LA-ICP-MS zircon U-Pb dating shows that its age is 257.1±4.0 Ma. The Late Permian diorite of Hanggale area was pre-collisional volcanic arc granite, and Hanggale area was a volcanic arc belonged to active continental margin in Late Permian.
- geochemical characteristics,
- LA-ICP-MS zircon U-Pb dating,
- diorite,
- Late Permian,
- Hanggale

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Geochemical Characteristics and LA-ICP-MS Zircon U-Pb Dating of the Late Permian Diorite in Hanggale, Alax Right Banner, Inner Mongolia

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