The Geography Blog focusing on all things geography: human, physical, technical, space, news, and geopolitics. Also known as Geographic Travels with Catholicgauze!
Written by a former National Geographic employee who also proudly served in Iraq and Afghanistan.
Sioux Quartzite is quartz-type rock formed 542 million years ago to 2,500 million years ago. It was formed at the present-intersection of South Dakota, Minnesota, and Iowa. The most famous deposit of it is in Pipestone, Minnesota. Sioux Quartzite is found in massive above and below ground formations throughout the area.
Sioux Quartzite in South Dakota. Photo by Catholicgauze.
However, small rocks and boulders of Sioux Quartzite can be found all along the Kansas River in northeastern Kansas over 400 miles away from Pipestone. How is this possible?