|Localities||Meander Valley; Launceston City; West Tamar|
|Type Area||Trevallyn Park, Trevallyn|
|Grid Reference||41° 26’ 11.51” S; 147° 06’ 50.64” E; Elevation 94m ASL|
|Geology Sheet||1:25 000 Prospect (Forsyth and Calver 2005)|
The Trevallyn Hydrogeological Landscape (HGL) is characterised by a partially forested, undulating upland bounded by convex steep to precipitous cliff faces of jointed and fractured dolerite rock. The HGL is located west of the Tamar River in Launceston. This is an area of moderate rainfall (680 mm). it forms an upfaulted block in the landscape and so retains a deeply weathered profile on the upper surface, but is surrounded by cliffs with exposed dolerite.
Typical lithologies for this HGL are deeply weathered Jurassic dolerite and fractured Jurassic dolerite.View Report