TY - JOUR A1 - Shi, Guanzhong A1 - Shen, Chuanbo A1 - Wauschkuhn, Bastian A1 - Härtel, Birk A1 - Ratschbacher, Lothar A1 - Xia, Bin A1 - Ge, Xiang A1 - Zeng, Xiaowei A1 - Fu, Hongyang T1 - A zircon classification scheme for sedimentary provenance analysis using radiation damage Y1 - 2023-04-10 VL - 58 IS - 8 SP - 3087 EP - 3095 JF - Geological Journal DO - 10.1002/gj.4751 PB - John Wiley & Sons CY - Inc. N2 -

Detrital single‐grain zircon U–Pb geochronology is a powerful tool for provenance studies if information on the source rocks is available. This paper proposes a new source‐rock classification tool that uses the degree of annealing of radiation damage in detrital zircon; the annealing is expressed by the relationship between the width (full‐width at half‐maximum; FWHM) of the v₃[SiO₄] Raman band at ~1008 cm⁻¹ and the calculated α‐dose. The host rocks of the zircons are classified into three types according to their emplacement process and/or thermal history: volcanic and rapidly cooled plutonic and high‐grade metamorphic rocks (type 1); rocks with hydrothermal zircons (type 2); slowly cooled igneous and metamorphic rocks (type 3). We construct a naive Bayes prediction model by training it with a collection of zircons of known types. The unknown zircons are assigned a probability of derivation from a specific host‐rock type. This classification scheme is best used as an accessory tool in provenance studies that apply detrital zircon U–Pb geochronology.

N2 -

Zircons are classified into three types based on annealing state revealed by Raman analysis and calculated α‐dose. This classification can be used to distinguish zircon in provenance study.

UR - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11179 ER -