Results: 1 - 5 of 5
Dec 31, 1989
Open File Report
Jul 20, 2011
Open File Report
… largely of silty mudstone and siltstone, with subordinate coal, …
Aug 15, 2011
Open File Report
… mudstone with thin sandstone and siltstone interbeds and isolated … consists mainly of mudstone and siltstone (commonly carbonaceous); …
Dec 31, 1966
Earth Sciences Report
… green and carbonaceous shale and siltstone, with interbedded lenses …
Apr 01, 2014
Map
… and marine mudstone and siltstone of the Lea Park …