Thursday, February 21, 2013
It's 2 AM Local Time
I got a nice email from one of our many AgTalk friends from around the world. "Would have been really good to meet you though where 1200kms east of adelaide, this time of the year is good for us as its out of main season cropping and they usually do seeder field days now too. If you or your friends ever come again me and peter rayner (swnsw no till) are 10km apart and we'd love to show you around.
This world exploration could become a fulltime job but I think we would have to be multi millionaires to afford to do it! I am not sure a million would be enough in this economy.
I learned that Australia is one of the oldest places on earth but one of the newest countries like the United States is.
"Three areas of the Australian landmass that are made of Archaean rocks are more than 2.5 billion years old, among the oldest rocks known to man. These igneous and metamorphic rocks are found in the Yilgarn (West) and Pilbara (North) cratons in today's Western Australia and the Gawler (South) craton which makes up the Eyre Peninsula in South Australia. During the Proterozoic, 2,500 to 545 Ma, continent building took place around the existing cratons; the accretions include sedimentary deposition of the banded iron formations and the formation of Australia's major orebodies - sources of gold, copper, lead, zinc, silver and uranium. These disparate landmasses are thought to have become associated by the tectonic collisions that formed the supercontinent Rodinia, between 1300 to 1100 Ma. Geological evidence suggests that the West Australian cratons collided first, followed by collision with the South Australian craton between ~830 and 750 Ma. The Centralian Superbasin formed the junction of the North, South and West cratons.
Rodinia broke up between 830 to 745 Ma; at around 750 Ma the western side of Rodinia called Laurentia broke away from the landmass made from Australia, India and Antarctica, forming a gap that would become the Pacific Ocean.
The Archean rocks from the Pilbara craton contain some of the first evidence of life, primitive cyanobacterial mats known as stromatolites. Soft-bodied organisms from the Ediacaran collectively known as the Ediacaran biota are found in sandstone around the Flinders Ranges in South Australia, notably at a site known as Wilpena Pound."
That's fancy talk that says Australia is very old. North America is much newer in geologic formation.
I must say Australian's have a great outlook on life.
"No worries, mate."