"The Sudbury impact ... happened around 1.85 billion years ago. The event fundamentally affected the concentrations of dissolved oxygen in the deep sea — enough to almost instantly shut down the accumulation of marine sediments known as banded iron formations."
Tuesday, November 10, 2009
Toss in an asteroid...
and agitate the ocean, thereby adding oxygen: Asteroid impact could have stirred the ocean. Key bit:
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment