Sudbury Ore Environments PLAN NORTH Offset Deposits Concentric Offset Footwall ∠ Sudbury Breccia Deposits Zones Contact Embayment Deposits without radial offset Embay with radi OFFSET SIC Quartz diorite Leucocratic norite Mafic r norite CONTACT ZONE FOOTWALL Massive sulphide Granitoid Footwall breccia #!# Disseminated Inclusion bearing ulphide Footwall sublayer norite Sudbury breccia Breccia After, Lightfoot et al., 1997Sudbury Ore Environments After; Lightfoot et.al., 1997