Geology of Melbourne

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-The '''geology of Melbourne''' was formed over hundreds of millions of years.+The '''geology of Melbourne''' was formed over hundreds of millions of years. Some interesting points of note are:
 + 
 +* The Murray Darling Basin used to be an inland sea
 +* The southern coast of Australia is rising slowly, which has lifted much of it above sea level
 +* Melbourne's "sand belt suburbs" are built on remnant sand dunes that were formed when they were an ancient sea shore - when seas were higher. Similar remnant dunes are found in the Murray Darling Basin well inland
 +* Melbourne's geology is based on Silurian sedimentary rock which was laid down in a marine environment about 400 million years ago
 +* Basalt lava flows from active volcanoes travelled to the sea and dammed the Plenty and Yarra Rivers and Banyule and other creeks. These dams formed what is now the river flats of these rivers.
 +* The rivers eventually broke free of their dams to form their present day courses.
==See also== ==See also==
* {{pdf|Geology of Melbourne Talk.pdf|Presentation on the geology of Melbourne}} Professor Andrew JW Gleadow * {{pdf|Geology of Melbourne Talk.pdf|Presentation on the geology of Melbourne}} Professor Andrew JW Gleadow
 +
 +[[Category:Victoria]]
 +[[Category:Geology]]

Revision as of 13:09, 13 April 2010

The geology of Melbourne was formed over hundreds of millions of years. Some interesting points of note are:

  • The Murray Darling Basin used to be an inland sea
  • The southern coast of Australia is rising slowly, which has lifted much of it above sea level
  • Melbourne's "sand belt suburbs" are built on remnant sand dunes that were formed when they were an ancient sea shore - when seas were higher. Similar remnant dunes are found in the Murray Darling Basin well inland
  • Melbourne's geology is based on Silurian sedimentary rock which was laid down in a marine environment about 400 million years ago
  • Basalt lava flows from active volcanoes travelled to the sea and dammed the Plenty and Yarra Rivers and Banyule and other creeks. These dams formed what is now the river flats of these rivers.
  • The rivers eventually broke free of their dams to form their present day courses.

See also

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