Results: 1 - 4 of 4
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); …
Apr 01, 2014
Map
… and marine mudstone and siltstone of the Lea Park …