02411cam a22003133u 4500 46969 UtSlPG 20260610134059.0 m cr n 260607r2014||||utu|||||o|||||||||||||| d UtSlPG en iso639-1 F850.5 QE Thayer, Thomas P., 1907-2004 The Geologic Setting of the John Day Country: Grant County, Oregon Salt Lake City, UT : Project Gutenberg, 2014 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier Release date is 2014-09-26 Produced by Stephen Hutcheson, Dave Morgan and the Online Distributed Proofreading Team at http://www.pgdp.net "The Geologic Setting of the John Day Country: Grant County, Oregon" by Thayer is a scientific publication that was likely written in the mid-20th century. The book provides an in-depth exploration of the geology of the John Day region in Oregon, which is recognized for its rich natural history and significant fossil beds. It serves as a comprehensive guide to understanding the geological features, history, and processes that have shaped this unique area. The book is structured around a detailed geologic history and an accompanying road log that facilitates exploration of the John Day region's significant geological points of interest. It begins with the geological formation of the area dating over 250 million years back, including volcanic activity, sediment deposition, and various geological transformations. The narrative highlights key geological features such as the John Day River, volcanic formations, the influence of glacial activity, and the unique fossil beds that have provided insight into the evolution of ancient life. The publication aims to educate readers about the intricate geological processes that have occurred over millions of years, making the John Day Country not only a geological marvel but also a destination for outdoor recreation and scientific curiosity. (This is an automatically generated summary.) Original publication data not identified Recreation areas -- Oregon -- Grant County Geology -- Oregon -- Grant County https://www.gutenberg.org/ebooks/46969 87808 87808