Results: 1 - 2 of 2
Dec 31, 1989
Open File Report
… supported study of the Jurassic-Lower Cretaceous boundary … the 'Niton B' unit - is of Upper Jurassic age and shallow - marine … part of the marine Middle Jurassic Rock Creek Member, this …
Dec 31, 1992
Open File Report
… of the Lower Cretaceous, Jurassic and Mississippian … one of the most problematic. The Jurassic units are unconformity … between the Cretaceous and Jurassic strata generally cannot be …