Results: 1 - 2 of 2
Aug 15, 2011
Open File Report
… silty mudstone with thin sandstone and siltstone interbeds … (HCS), overlain by a thick sandstone unit showing swaley … seam at the top of the thick sandstone marks the base of the …
Jun 30, 1980
Open File Report
… facies of the Bad Heart Sandstone of Late Cretaceous age. … into siltstone and argillaceous sandstone. It is overlain and …