Yin, Jiyuan, Huang, He, Bindeman, Ilya, Petrone, Chiara Maria, Fowler, Mike, Kerr, Andrew C.  ORCID: https://orcid.org/0000-0001-5569-4730, Tao, Zaili, Wang, Tao, Sun, Min, Zhao, Guochun and Xiao, Wenjiao
2026.
Rapid recycling of sediment-derived granites in accretionary orogens: Implications from the Alataw Mountains, NW China.
Chemical Geology
701
, 123181.
10.1016/j.chemgeo.2025.123181
|
Preview |
PDF
- Accepted Post-Print Version
Available under License Creative Commons Attribution. Download (3MB) | Preview |
Abstract
The origin of S- and I-type granites in accretionary orogens remains contentious due to complex geochemical and isotopic signatures, challenging traditional granite classifications. We present new zircon U-Pb-Hf-O, quartz O isotope and whole-rock geochemical data from two-mica (S-type) and biotite (nominally I-type) granites in the Alataw Mountains, northwest China, showing both are derived from sediment-dominated protoliths. Zircon Usingle bondPb dating indicates emplacement at 303–298 Ma, with differing inherited ages of 443–397 Ma and 1404–811 Ma. The two-mica granites were derived from metapelitic sources and are strongly peraluminous, while the biotite granites are metaluminous to weakly peraluminous with many “I-type” characteristics. Both types exhibit high SiO2, low MgO, elevated zircon δ18O, high quartz δ18O and high Δ’17O values consistent with sedimentary sources, but depleted εNd(t) and εHf(t) values that require a juvenile origin. Phase equilibrium modelling indicates that these granites formed through water-fluxed partial melting of variable Carboniferous sedimentary rocks. Thus, crustal melts appear juvenile and S-type granites appear to be I-type. Our findings highlight the critical role of rapid crustal recycling via sediment melting during the reworking of juvenile crust within arc-related accretionary orogens and suggest the need for caution when considering granite origins based on traditional typological classifications.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Earth and Environmental Sciences |
| Additional Information: | RRS policy applied |
| Publisher: | Elsevier |
| ISSN: | 0009-2541 |
| Date of First Compliant Deposit: | 12 December 2025 |
| Date of Acceptance: | 2 December 2025 |
| Last Modified: | 05 Feb 2026 10:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/183180 |
Actions (repository staff only)
 |
Edit Item |
Altmetric
Altmetric