apollo. (2026). Mata Menge 40Ar/39Ar, fission-track and US-ESR dates (Brumm et al. 2016) (Version 1.0) [Data set]. Mysteries Department. https://mysteriesdept.com/datasets/DAT0CZNMVBE63YC/mata-menge-40ar-39ar-fission-track-and-us-esr-dates-brumm-et