Monument Rocks (Kansas)
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|Location||South of Oakley, Kansas, Gove County, Smoky Hills, Kansas, United States|
|Elevation||802 m (2,631 ft)|
|Established||National Natural Landmark|
|Website||Washburn University website|
Monument Rocks (also Chalk Pyramids) are a series of large chalk formations in Gove County, Kansas, rich in fossils. The formations were the first landmark in Kansas chosen by the US Department of the Interior as a National Natural Landmark. The chalk formations reach a height of up to 70 ft (21 m) and include formations such as buttes and arches. The carbonate deposits were laid down during the Cretaceous Period in what was then the Western Interior Seaway, which split the continent of North America into two landmasses. They are estimated to have been formed 80 million years ago.
Other geological formations in Kansas:
- Castle Rock (Kansas)
- Little Jerusalem Badlands State Park
- Mushroom Rock State Park
- Rock City, Kansas
- Big Basin Prairie Preserve
- Williston, S. W (1891). "The Niobrara Cretaceous of Western Kansas". Transactions of the Annual Meetings of the Kansas Academy of Science. 13: 107–11. doi:10.2307/3623983. JSTOR 3623983.
- Charlton, John; Merriam, Dan (2003). "Ever changing landscape: Recent topographic landmark erosion in Kansas". Transactions of the Kansas Academy of Science. 106 (1 & 2): 29–39. doi:10.1660/0022-8443(2003)106[0029:ECLRTL]2.0.CO;2. JSTOR 3628377.