The Inyan Kara Group is a geologic group classification applied in South Dakota and adopted in portions of Wyoming and Montana. It preserves fossils of the mid-Cretaceous period. Of late Albian age, this classification correlates with the lower Dakota Formation (Nishnabotna member) known in the southwest corner of the State.
The South Dakota Geological Survey has also extended the Graneros to group other formations into a unit that correlates with the upper Dakota Formation (Note: This definition is widely different than the generally consistent definitions of Graneros/Belle Fourche.[1]). These state definitions of the Inyan Kara and Graneros Groups thereby cover the first two sequences of the Western Interior Seaway recorded by the Dakota Formation.[2][3]
North Dakota also classifies the same strata as Inyan Kara, but only of formation rank without recognizing further formal subdivision, and assigns this Inyan Kara Formation as the lowest member of the Dakota Group.[4]
^Hattin, Donald E. (1965). "Stratigraphy of the Graneros Shale (Upper Cretaceous) in Central Kansas". Kansas Geological Survey Bulletin (178). Kansas Geological Survey: Stratigraphy / Graneros Shale / Name and Definition. Retrieved September 6, 2021. The lithologic equivalent of the Graneros in the Black Hills and surrounding areas is the Belle Fourche Shale. Considerable similarity exists between these two formations, and, if the name Graneros is to be perpetuated in the Black Hills region, it would be best used to replace the name Belle Fourche over which the former has priority.
The InyanKaraGroup is a geologic group classification applied in South Dakota and adopted in portions of Wyoming and Montana. It preserves fossils of...
InyanKara Mountain (Lakota: Íŋyaŋ Káǧa, Rock Gatherer ) is a mountain associated with the Bear Lodge Mountains of Crook County, Wyoming, (part of the...
Formation and the Fallriver sandstone, which are collectively called the InyanKaraGroup. Above this, the layers of rocks are less distinct and are all mainly...
followed by mining. The uranium occurs in Cretaceous sandstones of the InyanKaragroup, where it outcrops along the southern edge of the Black Hills in Fall...
barite. Uranium was discovered in 1952 in Cretaceous sandstones of the InyanKaraGroup near its outcrop in Crook County, Wyoming, near the northeast edge...
The Dakota is a sedimentary geologic unit name of formation and group rank in Midwestern North America. The Dakota units are generally composed of sandstones...
the range. The place names Bear Lodge, Sun Dance, and Rock Gatherer (InyanKara) come from the history of Lakota people in this area. Devils Tower was...
The Cathedral Group is the group of the tallest mountains of the Teton Range, all of which are located in Grand Teton National Park in the U.S. state of...
the Buffalo's Head, with the face, Bear Butte as the Buffalo's Nose, and Inyan Kaga as the Black Buffalo Horn." Jessica Dawn Palmer, The Dakota Peoples:...
children, killed in the early 1780s by unknown Native American attackers. Groups of Sioux were the ones who gained most by the weakening of the Arikara....
Geneva, Switzerland at the final meeting of the Intersessional Working Group on the Draft Declaration on the Rights of Indigenous Peoples (WGDD). She...
Harlan, "Lakota group secedes from U.S." Archived August 23, 2009, at the Wayback Machine, Rapid City Journal, December 20, 2007. "Lakota group pushes for...
Mountain Group, and reach thicknesses of 13,000 to 24,000 feet (4.0 to 7.3 km). Most of the high peaks are outcrops of the Uinta Mountain Group. Many of...
across the eroded Jurassic landscape deposited the sandstone and siltstone InyanKara Formation. Thick layers of shale, such as the Pierre Formation, formed...
careful and unhurried nature. When he was 14 years old, he accompanied a group of Lakota warriors, which included his father and his uncle Four Horns,...
named Horn Chips to protect his horse, a black-and-white pinto he named Inyan (rock or stone). He placed the stone behind the horse's ear so that the...
lives. Tall was involved with the Black Hills Alliance in the 1970s, a group consisting of locals and environmentalists who investigated and tracked...
University of Oklahoma. Lois Smoky left the group in 1927, but James Auchiah took her place in the group. The Kiowa Six gained international recognition...
Interstate Highway; the straighter route was also supported by business groups in Sheridan. The injunction was denied by a state district judge in 1959...
Mount Doane Mount Doane (left) and Mount Stevenson (right) 1871 Various groups of Native Americans had proposed renaming the mountain in 2017 and 2018...
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