New Mars Forums

Palomar

Member

From: USA

Registered: 2002-05-30

Posts: 9,734

Re: Earth's Richat Structure

http://antwrp.gsfc.nasa.gov/apod/ap021028.html]What in tarnation...

*50 km in diameter in Saharan Desert.  Isn't believed to be a volcano, so I didn't put this in the "Active Terran Volcanoes" thread. 

One of the main mysteries is why it's so circular in appearance. 

Very striking.  :-\

--Cindy

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We all know [i]those[/i] Venusians: Doing their hair in shock waves, smoking electrical coronas, wearing Van Allen belts and resting their tiny elbows on a Geiger counter...

--John Sladek (The New Apocrypha)

SpaceNut

Administrator

From: New Hampshire

Registered: 2004-07-22

Posts: 29,431

Re: Earth's Richat Structure

It looks more like an open strip mining operation.

Grypd

Member

From: Scotland, Europe

Registered: 2004-06-07

Posts: 1,879

Re: Earth's Richat Structure

Either that or a structural representation of an asteroid impact

or it was a lake that has dried and slowly formed such a structure

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Chan eil mi aig a bheil ùidh ann an gleidheadh an status quo; Tha mi airson cur às e.