Another article on what could have been the cause of the end the Banded Iron Formation Deposition about 1.85 Billion years ago.
Giant Asteroid Impact Could Have Stirred Entire Ocean | Wired Science | Wired.com
Harry Allen
Thursday, November 12, 2009
Tuesday, November 10, 2009
Banded Iron Formations:
a "new" BIF depositional model:
Banded Iron Formations: Interaction of Air, Water and Rocks
Some thoughts on how our BIFs got here.
Banded Iron Formations: Interaction of Air, Water and Rocks
Some thoughts on how our BIFs got here.
Monday, November 9, 2009
Metamorphic Rocks Class change
Hard Rock Fans take note:
Terry Steinborn's Metamorphic Rocks class At Yavapai Community Ed has been changed to the SpringII Session (April-May). It was going to be given in the SpringI session.
Harry Allen
Terry Steinborn's Metamorphic Rocks class At Yavapai Community Ed has been changed to the SpringII Session (April-May). It was going to be given in the SpringI session.
Harry Allen
Friday, October 23, 2009
Happy "birthday," dear planet
(From the Nova Geoblog). Happy 6013th Birthday Earth.
NOVA Geoblog: Happy "birthday," dear planet
??How many of our legislators still believe in this Date is correct?? Are they having a birthday party today?
Harry Allen
NOVA Geoblog: Happy "birthday," dear planet
??How many of our legislators still believe in this Date is correct?? Are they having a birthday party today?
Harry Allen
Sunday, October 18, 2009
'Shiva' Crater In India
Look at this giant Crater identified off India( 500 km diameter)
PALAEOBLOG: Did 'Shiva' Crater In India Doom The Dinosaurs?
Harry Allen
PALAEOBLOG: Did 'Shiva' Crater In India Doom The Dinosaurs?
Harry Allen
Thursday, October 15, 2009
'Scary' climate message from past
The blog Arizona Geology had a link to this news- It is sobering if you know anyone on the coasts. So long Flordia with a rise of the sea levelof 80 to 130 feet.
BBC NEWS | Science & Environment | 'Scary' climate message from past
Harry Allen
BBC NEWS | Science & Environment | 'Scary' climate message from past
Harry Allen
Saturday, October 10, 2009
The Big One Video
Here is a video of what could happen to California when the "Big One" goes near LA
Harry Allen
Harry Allen
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