Temporal Coverage: Cretaceous - Yale University Library GeoBlacklight Search Results

51. Thickness of upper Cretaceous rocks from the base of the Niobrara Formation to the top of the Frontier Formation, including the Carlile shale, Greenhorn Formation, and Sage Breaks shale, Powder River Basin, Wyoming and Montana [microform]

1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Powder River Basin (Wyo. and Mont.). Cretaceous.

52. Thickness of upper Cretaceous rocks from the top of the Niobrara Formation to the base of the Fox Hills Sandstone, Powder River Basin, Wyoming and Montana [microform]

1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Powder River Basin (Wyo. and Mont.). Cretaceous.

53. Topographical map, showing coal areas of the Moose Mountain region of the "disturbed belt", southern Alberta [cartographic material]

1914. 2018-06-25T19:55:56Z. 2018-09-05T20:08:12Z. Cairnes, D. D. (DeLorme Donaldson), 1879-1917. Geological Survey. English. cartographic image. Public. Alberta, Moose Mountain Region, and Moose Mountain Region (Alta.). Cretaceous.