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The Black Hills

Black Hills

39 units spanning 2.6 Gyr

Upper Miocene Rocks
Lower Miocene Rocks
White River Formation
Unnamed
Lance Formation
Fox Hills Sandstone
Pierre Shale
Niobrara Formation
Carlile Formation
Greenhorn Formation
Belle Fourche Shale
Mowry Shale
Newcastle Sandstone
Skull Creek Shale
Fall River Formation
Lakota Formation
Morrison Formation
Sundance Formation
Gypsum Spring Formation
Spearfish Formation
Spearfish Formation
Minnekahta Limestone
Opeche Shale
Minnelusa Formation
Pahasapa Limestone
Englewood Formation
Whitewood Dolomite
Winnipeg Formation
Deadwood Formation
Harney Peak Granite
Buck Mountain Quartzite
Roberts Draw
Estes
Blue Draw Metagabbro
Benchmark Iron
Boxelder Creek
Boxelder Creek
Little Elk Granite
unnamed
Black Hills

39 units spanning 2.6 Gyr

Upper Miocene Rocks
Lower Miocene Rocks
White River Formation
Unnamed
Lance Formation
Fox Hills Sandstone
Pierre Shale
Niobrara Formation
Carlile Formation
Greenhorn Formation
Belle Fourche Shale
Mowry Shale
Newcastle Sandstone
Skull Creek Shale
Fall River Formation
Lakota Formation
Morrison Formation
Sundance Formation
Gypsum Spring Formation
Spearfish Formation
Spearfish Formation
Minnekahta Limestone
Opeche Shale
Minnelusa Formation
Pahasapa Limestone
Englewood Formation
Whitewood Dolomite
Winnipeg Formation
Deadwood Formation
Harney Peak Granite
Buck Mountain Quartzite
Roberts Draw
Estes
Blue Draw Metagabbro
Benchmark Iron
Boxelder Creek
Boxelder Creek
Little Elk Granite
unnamed
3,462columns
129,304rock units
20,322,584map polygons
8projects

Geologic maps and stratigraphic columns, integrated into one model of the Earth's crust through time.