1. Oxygen as a Biosignature on Terrestrial Planets Open Access Author: Harman, Chester Ervin Title: Oxygen as a Biosignature on Terrestrial Planets Graduate Program: Geosciences Keywords: oxygensulfurmass independent fractionationfalse positiveArcheanatmospheric chemistryplanetary science File: Download Harman_dissertation_05312017.pdf Committee Members: James F. Kasting, Dissertation Advisor/Co-AdvisorJames F. Kasting, Committee Chair/Co-ChairChristelle Wauthier, Committee MemberChristopher Howard House, Committee MemberSteinn Sigurdsson, Outside Member