Image: Volcanic distribution map of southeast Australia
Volcanic distribution map, southeast Australia, showing a synthesis of different lava types and ages.
- Lin Sutherland
- © Australian Museum
A=Arumpo ash beds (light grey). GA=Gravity anomaly over buried basalt volcanoes. LD=Lava crater (spots) Domain (space interpretation). WD=Western District Volcanic Province (dark grey). MD=Macedon-Trentham Volcanic Province (orange). CL=Cape Otway Lineament. Wf, Mf, Af, Wf, & Bf are crustal fault lines. ST= Shipwreck Trough ocean transfer fault. TFZ=Tasman Fracture zone oceanic faults.Numbers are ages of volcanic rocks in million years ago.Migratory volcanic chains (orange). Red dots area of deep thermal upwelling.