there was a similar thread at BDWF and I found it funny that the PJ himself is posting there and giving out "expert information" ala Jimbo.
[QUOTE=yamahaki;569289]As far as sandstone,its just sedimentary rock.
Sandstone's banding is due to layers of sand that are deposited with differing characteristics. Sandstone is formed in many deposits that are episodic in nature and the resulting layers can be very different from previous layers. Sometimes the sand is courser or finer than the previous layer and this difference causes the banding. Dunes and ripples of sand can cut across earlier deposits and cut off those earlier bands with bands of their new. This results in a texture call cross-bedding (see picture above) and can be very intricate and interesting. "Picture Rock" is a type of ornamental sandstone that can display scenic, almost picture like banding.
Sandstone deposits can be a beautiful part of the natural environment and apart of the breath-taking views at many natural parks and preserves. The sandstone deposits of the the Grand Canyon, Zion, Bryce, Mesa Verde, Arches, and Red Rock National Parks to name a few in just the USA provide millions of visitors spectacular views.
Mined sandstone can be cut, polished and carved for many uses. It is used as ornamental rocks for buildings, monuments, grave stones, bookends, beverage coasters, tiles and many other possible uses. Sandstone can also provide silica for glass production[/QUOTE]
HMMMM..... Maybe giving credit where it is due is beneath him until he got called on it by Mark and nous defions. I wonder why Nous has not shown up here. He took WG to task more than once.
http://www.galleries.com/rocks/sandstone.htm
