Harts
Range, Central Australia: the brain and
diapirism |
Interpretation: this is a potential example of internal circulation in a diapiric body of granite+sediment, rising obliquely to the NE through a denser carapace of basalts, leaving its pathway behind. The age difference between the older granite and younger basalt carapace suggests that diapirism took place in the solid state. Rock dating can be found in Hand, Mawby, Kinny, Foden, J. 1999. SHRIMP evidence for multiple high-T Palaeozoic events in the Arunta Inlier, central Australia. Geological Society of London Journal, 156, 715-730.