Results: 1 - 2 of 2
Sep 26, 2017
Open File Report
… from Lower Jurassic to Lower Cretaceous strata of the southern … of the Jurassic through Lower Cretaceous strata of the Rocky … of the Jurassic through Lower Cretaceous Strata of the Rocky …
Jun 30, 1980
Open File Report
… the Bad Heart Sandstone of Late Cretaceous age. The deposit crops … by gray marine shales of the upper and lower Smoky Group. The …