Potential National Natural Landmarks in the Great Plains: Geological Categories of History of Landforms and History of Lifeforms

摘要

This study is one of a series of 61 which cover the natural regions of the United States. Each study describes the geological features characteristic of that region, then evaluates sites representative of the various features. Sites which are outstanding examples are suggested as potential National Natural Landmarks. This report describes 81 areas of geological significance in the Great Plains natural region, including areas in Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming. Sites are selected based on their representation of the landforms or the lifeforms (fossil record) of the region.