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https://hdl.handle.net/1959.11/55478
Title: | Water-in-zircon: a discriminant between S- and I-type granitoid | Contributor(s): | Mo, Jing (author); Xia, Xiao-Ping (author); Li, Peng-Fei (author); Spencer, Christopher J (author); Lai, Chun-Kit (author); Xu, Jian (author); Yang, Qing (author); Sun, Ming-Dao (author); Yu, Yang (author); Milan, Luke (author) | Publication Date: | 2023-01-02 | DOI: | 10.1007/s00410-022-01986-7 | Handle Link: | https://hdl.handle.net/1959.11/55478 | Abstract: | Granitic rocks are crucial in revealing continental crust formation and evolution. The classic S- and I-type granitoid classification (based upon metasedimentary vs. metaigneous protolith) is widely adopted, but is not always straightforward when diagnostic minerals (e.g., cordierite for S-type and amphibole for I-type) are absent. In this study, zircon oxygen isotope and water content were measured simultaneously with Secondary Ion Mass Spectrometry (SIMS) on I- and S-type granitoids from various tectonic settings, including the New England Orogens (NEO), the Diancangshan–Ailaoshan and the Himalayan orogens, and the South China Block. Our results indicate the S-type samples are characterized by lower water-in-zircon content (median 14–170 ppm) than the I-type samples (median 449–885 ppm). Also, inherited I-type zircon cores in S-type samples from the NEO have higher water-in-zircon content than the zircon rims, confirming the different water content between the two granitoid types. We propose that water-in-zircon content is a potential tool to distinguish I- and S-type granitoids. Nonetheless, the low water-in-zircon content of S-type granitoids has likely no correlation with high magma water content. | Publication Type: | Journal Article | Source of Publication: | Contributions to Mineralogy and Petrology, 178(1), p. 1-13 | Publisher: | Springer | Place of Publication: | Germany | ISSN: | 1432-0967 0010-7999 |
Fields of Research (FoR) 2020: | 370503 Igneous and metamorphic petrology | Socio-Economic Objective (SEO) 2020: | 280107 Expanding knowledge in the earth sciences | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Environmental and Rural Science |
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