Posts Tagged ‘Geology’

The solar system’s deepest canyon

October 14, 2010

The  largest mountain/volcano in our solar system is Olympus Mons located on Mars.

The definition of “largest canyon” is rather imprecise but one of the largest canyons on Earth is the Grand Canyon.

Just as the largest mountain in the solar system is on Mars, so too is the deepest canyon.

Melas Chasma on Mars is 9 kilometers deep in some places, or nearly six times deeper than the Grand Canyon on average. How the giant feature was formed, itself one small stretch of the 4000-kilometer-long Valles Marineris rift valley, remains a mystery. But one thing seems evident: water played a role in its history.

Read more here, here or here.

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There’s gold in them thar hills

May 9, 2010

Gold is a chemical element with the symbol Au and an atomic number of 79. It has been a highly sought-after precious metal for coinage, jewelry, and other arts since the beginning of recorded history.

Interestingly, the Australian state of Victoria could be sitting on US$20 billion-worth of undiscovered gold.

Victoria is no stranger to gold rushes. It experienced its first in 1851 when a grain of gold was discovered in a waterhole near Bathurst. Within two years, the state’s population had doubled to 222,000, one-quarter of whom worked in the gold fields. Since then, some 2500 tonnes have been mined from the area.

Geologists are 90 per cent certain that at least 500 tonnes is still waiting to be discovered in the region. At today’s prices, that would be worth $20 billion. Read more here.

I happen to live in Victoria, so excuse me while I duck out to the backyard to start digging!