Search results
Results from the WOW.Com Content Network
The geology of South Dakota began to form more than 2.5 billion years ago in the Archean eon of the Precambrian. Igneous crystalline basement rock continued to emplace through the Proterozoic, interspersed with sediments and volcanic materials. Large limestone and shale deposits formed during the Paleozoic, during prevalent shallow marine ...
Geography of South Dakota. South Dakota is a state located in the north-central United States. It is usually considered to be in the Midwestern region of the country. The state can generally be divided into three geographic regions: eastern South Dakota, western South Dakota, and the Black Hills.
An 1883 map shows this town at the headwaters of a creek, which branches off of the Bear Butte Creek, below Sturgis. The map is rather inaccurate, but it shows the town about 4 + 1 ⁄ 2 miles (7.2 km) S-W of Sturgis, on a line between Sturgis and Lead. Sheridan: Golden City: Pennington: fall 1875-after 1930: Barren (submerged) Submerged under ...
Sioux Quartzite at Falls Park, Sioux Falls, South Dakota Cross-bedding in the Sioux Quartzite, Blue Mounds State Park, Minnesota, United States.. The Sioux Quartzite is a Proterozoic quartzite that is found in the region around the intersection of Minnesota, South Dakota, and Iowa, and correlates with other rock units throughout the upper midwestern and southwestern United States.
Official South Dakota Highway Map. State of South Dakota. 2007. A Tourist Guide of the Black Hills (South Dakota Department of Environment & Natural Resources) South Dakota Atlas & Gazetteer. Yarmouth, ME: DeLorme. 1997. ISBN 0-89933-239-0.
The Pierre Shale is a geologic formation or series in the Upper Cretaceous which occurs east of the Rocky Mountains in the Great Plains, from Pembina Valley in Canada [2] to New Mexico. The Pierre Shale was described by Meek and Hayden in 1862 in the Proceedings of the Academy of Sciences (Philadelphia).
Black Hills. The Black Hills is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. [3] Black Elk Peak, which rises to 7,242 feet (2,207 m), is the range's highest summit. [4] The name of the range in Lakota is Pahá Sápa. [5]
From List of National Natural Landmarks, these are the National Natural Landmarks in South Dakota. Bear Butte. Bijou Hills. Lake Thompson. Mammoth Site of Hot Springs. Cathedral Spires. Sica Hollow State Park. Buffalo Slough. The Castles.