Palaeoproterozoic to Mesoproterozoic Geology of North Queensland

Deformation & metamorphismLanglovale Group (Savannah or Kowanyama Province?)• Unconformable on Etheridge Group – truncates major E-W folds• Open folding with E-W shortening (D2 in Etheridge Group?), but no cleavage• Unconformably overlain by Croydon Volcanic Group and intruded by EsmeraldaSupersuite• Not metamorphosed (except contact metamorphism by Esmeralda Supersuite)• Relationships and zircon MDA indicate older than 1550Ma and younger than1625Ma• Tentatively considered part of Savannah Province (best developed in CoenInlier), but could be Kowanyama Province that lies in subsurface betweenGeorgetown & Mt IsaCroydon Province• Not metamorphosed• Dominated by almost flat-lying sheets of felsic ignimbrite