What people are saying - Write a review
We haven't found any reviews in the usual places.
The Geologic History of the Black Hills
Lithologic Correlation of Middle and Lower Paleozoic Rocks
Correlation of the PermoPennsylvanian Rocks of the Black
5 other sections not shown
Anticline ation Badlands basal Bismarck Black Hills Black Hills area Brule Cambrian Chadron correlation Custer Darton Deadwood deposits dolomite drilled east Fall River sandstone fauna feet flank fossil Fuson Geol geologists gray Gypsum Gypsum Spring formation Harding County Hartville hogback Hulett sandstone member Imlay Inyan Kara Junction Jurassic Kara group Lak member lignite limestone lithologic lithology Lower Cretaceous lower Sundance miles minerals Mines Minnelusa Montana Mountain Mowry Nebraska Newcastle northern Black Hills northwest northwestern Oil Company Oligocene Ordovician Oreodon Oreodon beds outcrop overlain overlying Pahasapa Paleozoic pegmatite Pennsylvanian Permian Pierre shale Pine salt pre-Cambrian Rapid City ridge road cut rocks sand sandstone Saude sediments siltstone Skull Creek Skull Creek shale South Dakota southeast southern Spearfish stone straight ahead stratigraphic structure subsurface Sundance formation surface Tertiary thickness thin tion Turn right unconformity unit uplift upper uranium White River Whitewood Williston Basin Wyoming zone