Results: 1 - 7 of 7
Sep 26, 2017
Data
… analyses of detrital zircon from Lower Jurassic to Lower Cretaceous strata of the southern …
Sep 26, 2017
Open File Report
… zircon geochronology from Lower Jurassic to Lower Cretaceous strata of the …
Oct 16, 2014
Open File Report
… geological mapping of the Cretaceous strata, specifically the extent and thickness of the lower Clearwater shale unit, that … area highlighting where the lower Clearwater shale unit is thin …
Sep 30, 1990
Open File Report
… maps are of two major types. Pre-Cretaceous aquifers have salinity … higher salinity has a relatively lower HCO 3 content compared to the lower salinity area. Except for the …
Feb 29, 2008
Geo-Note
… is presented for the uppermost Cretaceous strata of the … appear to be hosted within lower Cenomanian to Campanian … paleoenvironments ranged from lower shoreface below wave base to …
Apr 30, 2006
Earth Sciences Report
… identified from the Triassic and Lower Jurassic formation tops. … of the DCGC in the Late Cretaceous has been identified with … formation tops from the Upper Cretaceous through the Paleozoic …
Oct 31, 2003
Geo-Note
… (Birch Mountains) pipes contain lower ε Nd , higher 87 Sr/ 86 Sr, … age of the NAKP is Late Cretaceous (Coniacian to …