Results: 1 - 3 of 3
Oct 31, 1993
Open File Report
… … The Jurassic/Cretaceous boundary in a … 1992-23. The report discusses Jurassic stratigraphy, the nature of the Jurassic/Cretaceous boundary and …
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 …