%0 Journal article %A Shi, Guanzhong %A Shen, Chuanbo %A Wauschkuhn, Bastian %A Härtel, Birk %A Ratschbacher, Lothar %A Xia, Bin %A Ge, Xiang %A Zeng, Xiaowei %A Fu, Hongyang %T A zircon classification scheme for sedimentary provenance analysis using radiation damage %R 10.1002/gj.4751 %J Geological Journal %V 58 %N 8 %I John Wiley & Sons%C Inc. %X

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.

%U http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11179 %~ FID GEO-LEO e-docs