8 NEW 1:25 000 scale geological maps released
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The new Lily and Lagoon 1:25 000 maps each cover 200 km2 in the remote Norfolk Range area of northwest Tasmania. The new maps, which replace preliminary edition maps of this area, represent the culmination of more than 130 days of fieldwork, much of it helicopter-supported. They depict the detailed stratigraphy and structure of the Mesoproterozoic Rocky Cape Group and intrusions of Neoproterozoic dolerite and Devonian granite, together with locations of historical prospects. Note: these maps are accompanied by the Lily-Lagoon 3D geological and geophysical model.
The six new Loorana, Sea Elephant, Reekara, Saltwater, New Year and Egg Lagoon maps complete the detailed geological mapping of King Island (including offshore islands). Covering ~580 km2, they result from about 140 days of field work, mostly between 2019 and 2021. The maps show the distribution and structure of Mesoproterozoic metasediments (Surprise Bay and Fraser Formations), Neoproterozoic and Devonian granites and mafic dykes. Due to sparse outcrop, much of each map is based on float mapping, whereas the extensive Quaternary cover is subdivided into 14 units.
To access the entire index of 1:25 000 scale geological maps, please refer to the Digital Geological Atlas 1:25 000 Scale Series map index on our website, or go to our Digital Data page and select Digital Geology of Tasmania to download data.