how have central lowlands been formed
Answers
Answer:
The sedimentary rocks of the central lowlands were created by sediments, or silt and biological matter, deposited when the inner part of Australia was covered by an inland sea millions of years ago.
Answer: The Central Lowlands account for 25 percent of the continent and are characterised by extremely flat, low-lying plains of sedimentary rock. The sedimentary rocks of the central lowlands were created by sediments, or silt and biological matter, deposited when the inner part of Australia was covered by an inland sea millions of years ago.
The Central Lowlands region stretches from Australia's largest river basin, the Murray-Darling, through the Great Artesian Basin, extending north to the Gulf of Carpentaria. The Great Artesian Basin is one of the largest artesian groundwater basins in the world, and covers 1 711 000 square kilometres (km2). One of the most significant landforms in the Central Lowlands is Lake Eyre, the lowest point of the Australian continent, sitting 15 metres below sea level and spreading over almost 10 000 km2. The lowest landforms of the continent are found in this region, with an average height of less than 200 metres.
The Central Lowlands also receive the least amount of rain a year out of all the regions, less than 125 millimetres per year, and contain large deserts and salt plans. The Sturt Stony Desert (29 750km2), the Strzelecki Desert (80 250km2), and the Simpson (176 500km2) Desert are all located in the Central Lowlands. The Simpson contains the world's largest sand ridge desert. The 30-metre high dunes consist of red sand ridges extending for hundreds of kilometres. The dunes are held in position by vegetation.
