Journal Pre-proofs Multistages of original sapphire formation related to basaltic magmatism in the Bo Phloi basaltic gem field, Kanchanaburi, Western Thailand: Evidence from trace elements and ages of zircons Chakkaphan Sutthirat, Visut Pisutha-arnond, Pornmanee Khamloet, Thitiphan Assawincharoenkij PII: S1367-9120(19)30420-1 DOI: https://doi.org/10.1016/j.jseaes.2019.104068 Reference: JAES 104068 To appear in: Journal of Asian Earth Sciences Received Date: 8 April 2019 Revised Date: 6 October 2019 Accepted Date: 6 October 2019 Please cite this article as: Sutthirat, C., Pisutha-arnond, V., Khamloet, P., Assawincharoenkij, T., Multistages of original sapphire formation related to basaltic magmatism in the Bo Phloi basaltic gem field, Kanchanaburi, Western Thailand: Evidence from trace elements and ages of zircons, Journal of Asian Earth Sciences (2019), doi: https://doi.org/10.1016/j.jseaes.2019.104068 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier Ltd.