[BR-Crater] Lava Beds area

[Scot Wilcoxon]

http://www.rgj.com/news/stories/html/2004/04/07/67965.php

The Lava Beds has granite with a tendency to crumble.  That sounds familiar.

However, a BLM geologist says the rock is considered to be an extension 
of the Sierra Nevada batholith.  I wonder how they know that; maybe they 
have some detailed info about that area.

The Lava Beds area is described as 30 miles south of Black Rock Desert.  
But the location of the columnar jointed bluff is quite a bit nearer to 
the Lava Beds.  So "30 miles" is from the center of the desert.

I wonder what kind of rock the columnar bluff is made of, what is under 
it, and what the Lava Beds rock is like.  One map shows a mine symbol on 
the west side of the Lava Beds, but I haven't found its name nor what 
kinds of rock they found.

The BLM also has an estimated date for the Lava Beds rock.