Results: 1 - 6 of 6
Sep 26, 2017
Data
… 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 …
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 …
Dec 31, 1978
Bulletin
… km (25,970 sq. mi). Holocene and Cretaceous clastic rocks … are particularly notable at the Cretaceous-Devonian contact. West … unit, consisting of Holocene and Cretaceous sediments, is …
Dec 31, 1971
Earth Sciences Report
… north, is underlain by the Upper Cretaceous shaly, marine Lea Park … by thin basal beds of the Upper cretaceous nonmarine, clastic, …
Dec 31, 1955
Report
… Albian substage of the Lower Cretaceous. The calcareous …
Nov 28, 2011
Open File Report
… mafic sills and dikes, and the Cretaceous alkaline sills and dikes …