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Volume 11
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10.3390/min11080792
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Article

REE Tetrad Effect and Sr-Nd Isotope Systematics of A-Type Pirrit Hills Granite from West Antarctica

by
Hyo Min Lee
1,
Seung-Gu Lee
2,*,
Hyeoncheol Kim
2,
Jong Ik Lee
3 and
Mi Jung Lee
3
1
Geoscience Platform Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 34132, Korea
2
Geology Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 34132, Korea
3
Division of Polar Earth-System Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea
*
Author to whom correspondence should be addressed.
Minerals 2021, 11(8), 792; https://doi.org/10.3390/min11080792
Submission received: 6 July 2021 / Revised: 19 July 2021 / Accepted: 20 July 2021 / Published: 22 July 2021
(This article belongs to the Special Issue Magmatic-Hydrothermal Systems through Time)
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Abstract

The Pirrit Hills are located in the Ellsworth–Whitmore Mountains of West Antarctica. The Pirrit Hills granite exhibits significant negative Eu anomalies (Eu/Eu* = 0.01~0.25) and a REE tetrad effect indicating intensive magmatic differentiation. Whole-rock Rb-Sr and Sm-Nd geochronologic analysis of the Pirrit Hills granite gave respective ages of 172.8 ± 2.4 Ma with initial 87Sr/86Sr = 0.7065 ± 0.0087 Ma and 169 ± 12 Ma with initial 144Nd/143Nd = 0.512207 ± 0.000017. The isotopic ratio data indicate that the Pirrit Hills granite formed by the remelting of Mesoproterozoic mantle-derived crustal materials. Both chondrite-normalized REE patterns and Sr-Nd isotopic data indicate that the Pirrit Hills granite has geochemical features of chondrite-normalized REE patterns indicating that REE tetrad effects and negative Eu anomalies in the highly fractionated granites were produced from magmatic differentiation under the magmatic-hydrothermal transition system.
Keywords: A-type granite; Pirrit Hills; West Antarctica; REE tetrad effect; Rb-Sr; Sm-Nd isotopes A-type granite; Pirrit Hills; West Antarctica; REE tetrad effect; Rb-Sr; Sm-Nd isotopes

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MDPI and ACS Style

Lee, H.M.; Lee, S.-G.; Kim, H.; Lee, J.I.; Lee, M.J. REE Tetrad Effect and Sr-Nd Isotope Systematics of A-Type Pirrit Hills Granite from West Antarctica. Minerals 2021, 11, 792. https://doi.org/10.3390/min11080792

AMA Style

Lee HM, Lee S-G, Kim H, Lee JI, Lee MJ. REE Tetrad Effect and Sr-Nd Isotope Systematics of A-Type Pirrit Hills Granite from West Antarctica. Minerals. 2021; 11(8):792. https://doi.org/10.3390/min11080792

Chicago/Turabian Style

Lee, Hyo Min, Seung-Gu Lee, Hyeoncheol Kim, Jong Ik Lee, and Mi Jung Lee. 2021. "REE Tetrad Effect and Sr-Nd Isotope Systematics of A-Type Pirrit Hills Granite from West Antarctica" Minerals 11, no. 8: 792. https://doi.org/10.3390/min11080792

APA Style

Lee, H. M., Lee, S.-G., Kim, H., Lee, J. I., & Lee, M. J. (2021). REE Tetrad Effect and Sr-Nd Isotope Systematics of A-Type Pirrit Hills Granite from West Antarctica. Minerals, 11(8), 792. https://doi.org/10.3390/min11080792

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