Warwick Willmott, Rocks and Landscapes of the National Parks of North Queensland writes:

“Resistant granite mountains that rise above the tableland west of Kuranda provide the scenery of the parks. The granite in this case is the Tinaroo Granite, one of the numerous granitic bodies there were intruded as part of the Kennedy province in the early Permian times (290-270 million years ago). It is a course-grained biotite granite with large feldspar crystals. It is unusual in that it has recrystallised the surrounding meta-sediments of the Hodgkinson Formation to metamorphic phyllites and schists in a wide aureole around the intrusion. This suggests that besides being hot, it was intruded forcibly under pressure. The granite gives sandy soils which support open eucalypt forest, except on the higher, wetter slopes of the Lamb Range where rainforest dominates.”