[Rockhounds] Strange Sandstone Cylinders Found in the Lower Permian Glorieta Sandstone, Northern New Mexico

[Paul]

Lucas, S.G., DiMichele, W.A. and Karnes, J.M., Unusual Sandstone 
Cylinders from
the Lower Permian Glorieta Sandstone, Northern New Mexico. New Mexico 
Geology.
vol. 44, no. 3, pp. 63-75.
http://geoinfo.nmt.edu/publications/periodicals/nmg/44/n3/nmg_v44_n3_p63.pdf

New Mexico Geology Volume 44, Number 3 - Full Issue
http://geoinfo.nmt.edu/publications/periodicals/nmg/home.cfml

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Yours,

Paul H.