Atherton Tableland

The Atherton Tableland is a fertile plateau, which is part of the Great Dividing Range in Queensland, Australia. It has very deep, rich basaltic soils and the main industry is agriculture. The principal river flowing across the plateau is the Barron River, which was dammed to form the irrigation reservoir named Lake Tinaroo. Unlike many other rural areas, the Tablelands is experiencing a significant growth in population. This area is a distinct physiographic section of the larger North Queensland Highlands province, which in turn is part of the larger East Australian Cordillera physiographic division. South of the Tablelands is the Bellenden Ker Range. Around 100 million years ago, the eastern edge of the Australian continent extended much further to the east, before tectonic forces fractured the eastern margin, pulling it apart. At the same time, slowly rising mantle material caused a doming up of the continental crust. As the eastern part of the continent broke away, it gradually sank below sea level. Since that time, the uplifted western portion has been slowly eroding westwards, creating the abrupt Great Escarpment, which separates the coastal plain to the east from the uplifted tablelands to the west. Between 4 million to less than 10,000 years ago, a series of volcanic eruptions occurred over the Atherton Tableland. The oldest eruptions created large, gently sloping 'shield volcanoes' that produced extensive basalt flows. These flows filled the pre-existing valleys, producing a relatively flat tableland surface, instead of the more dissected landscape that existed previously. Around one million years ago, the style of eruption changed. The lavas became more gas-charged, throwing fragmented lava into the air, which built the numerous, small scoria cones such as the Seven Sisters, near Yungaburra. Some of the rising magma interacted with groundwater, producing violent eruptions that led to the formation of maar volcanoes, such as Lake Eacham and Lake Barrine. Although all the volcanoes in the Atherton Basalt Province are regarded as being extinct and volcanism has been waning over time, given the relatively recent activity, it is possible that further erup

Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).