|Lyons Sandstone, Denver Basin
The Lyons Sandstone has very low matrix porosity but fair to good fracture porosity. In outcrop, the porous beds are discontinuous, but in the subsurface, according to oilfield data, Lyons porosities range from 4.4 to 26.1 percent. (Levandowski and others, 1973)
Levandowski, D., Kaley, M., and Smalley, R., 1973, Cementation in the Lyons Sandstone and its role in oil accumulation, Denver Basin, Colorado: American Association of Petroleum Geologists Bulletin, v. 57, no. 11, p. 2217-2244.