The Michelago 1:100000 sheet covers an area of some 2497 square km in the State of New South Wales and the southeast portion of the Australian Capital Territory. The Michelago 1:100000 sheet belongs structurally to the southern portion of the Lachlan Fold Belt. This fold belt forms part of the Tasman Fold Belt System, and its origins can be traced back to the Cambrian period. Three main structural zones are recognised within the area. These are the Cowra-Yass Synclinorial Zone, the Captains Flat-Goulburn Synclynorial Zone, and the Molong-South Coast Anticlinorial Zone with Late Ordovician rocks representing the oldest in the area.
Richardson S.J., 1979. Geology of the Michelago 1:100000 Sheet 8726. New South Wales Geological Survey, Sydney.