
Keywords: EARS; East African Rift System; AFT; apatite fission track; MTL; mean track lengths; PAZ; partial annealing zone; ZHe; zircon (U-Th)/He; AHe; (U-Th-Sm)/He; PRZ; partial retention zone; eU; effective uranium, (eUâ¯=â¯Uâ¯+â¯0.235â¯Ãâ¯Th); Rs; equival