3b841072-f03d-4414-819e-3d6305c3c098 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-03-29T05:01:04 creation ISO 19115 2016 Regional variations in Australian heat flow 3b841072-f03d-4414-819e-3d6305c3c098 Twenty new heat-flow values from widely separated sites on the Australian continent are presented. These are combined with published land and marine data in the area 90-170°E, 0.45°S to produce contour maps of heat flux in the region. For most of the area the heat flux is uniform, and low (30-60 mW m^-2), presumably because both the oceanic and continental crusts are comparatively old. However, in eastern Australia the heat flow is significantly higher (~ 70-100 mW m^-2). The new data reinforce this pattern with values from the Canning Basin and Pilbara Block falling in the range 40-50 mW m^-2, and those in Queensland and New South Wales in the range 70-100 mW m^-2. The data distribution is still not good enough to delineate accurately the boundaries of the high and low heat-flow regimes, and hence define the boundary of possible Precambrian craton(s) where no outcrop is present. There is a strong positive correlation between heat flow and P-wave travel-time residuals, and a negative correlation between heat flow and upper-mantle velocity. There is no obvious relationship between heat flow and crustal thickness. {"type": "Polygon", "coordinates": [[[100.0, -45.0], [165.0, -45.0], [165.0, -8.0], [100.0, -8.0], [100.0, -45.0]]]} 100.0 165.0 -45.0 -8.0 AUS Earth Sciences GA Publication Journal Published_External Journal article (pdf) documentDigital Journal article (pdf) PDF Unnamed resource documentDigital HTML