New Reply

Oldest impact crater reported

 
Share Thread Thread Tools
Jul1-12, 10:48 AM   #1
 
Admin

Oldest impact crater reported

Oldest Impact Crater on Earth Discovered
http://news.yahoo.com/oldest-impact-...162802443.html

Scientists think it was formed 3 billion years ago by a meteorite 19 miles (30 kilometer) wide — which, if it hit Earth today, would wipe out all higher life. The crater is so wide that it would reach the edge of space 62 miles (100 km) above Earth if stood on end.

. . . .
The area in Western Greenland has deposits of Ni and Pt. I wonder if it's from the same source as the crater in Sudbury, Ontario, which is considered to be only 2 (+/-) billion years old.
 
PhysOrg.com
PhysOrg		 earth sciences news on PhysOrg.com

>> Oklahoma twister tracked path of 1999 tornado
>> Alaska volcano's ash prompts flight cancellations
>> The mammoth's lament: Study shows how cosmic impact sparked devastating climate change
Jul1-12, 11:43 AM   #2
T=0
 
...an impact from a meteorite that may have contained valuable metals.
Doesn't that mean that some valuable metals may have come as a result of meteorite impacts?
 
New Reply
Thread Tools


Similar Threads for: Oldest impact crater reported
Thread Forum Replies
Creating a vert. drop impact that is equivalent to a faster, but lighter hor. impact General Physics 5
relationship of velocity of the impact to crater depth Introductory Physics Homework 2
Pothead discovers worlds largest impact crater Earth 4
Impact Crater Formation Advanced Physics Homework 1