Project Gutenberg 2015-09-14 Public domain in the USA. 291 Robinson, Charles Sherwood 1920 Robinson, Charles S. (Charles Sherwood) Robinson, C. S. (Charles Sherwood) Geology of Devils Tower National Monument, Wyoming A Contribution to General Geology Produced by Stephen Hutcheson, Dave Morgan and the Online Distributed Proofreading Team at http://www.pgdp.net "Geology of Devils Tower National Monument, Wyoming" by Charles Sherwood Robinson is a scientific publication written in the mid-20th century. This book delves into the geological features and history of Devils Tower, an iconic geological formation in Wyoming. It provides a comprehensive overview of the Tower's structure, the types of rocks present in the area, and the geological processes that have shaped the landscape over various geological periods. The book begins with an introduction to the significance of Devils Tower, emphasizing its status as the first national monument established by President Theodore Roosevelt. It describes the Tower's composition, primarily igneous rock termed phonolite porphyry, and outlines the various sedimentary formations surrounding it, dating from the Triassic to the Jurassic period. Robinson discusses the geological history of the region, highlighting theories regarding the Tower's origin, including its potential classification as a volcanic neck or an intrusive igneous body connected to a deeper magma chamber. Additionally, the book elaborates on the geological processes such as erosion, faulting, and the structural characteristics of the rock formations, supported by illustrations and maps that provide visual context. (This is an automatically generated summary.) Reading ease score: 58.3 (10th to 12th grade). Somewhat difficult to read. en Geology -- Wyoming -- Devils Tower National Monument QE Text Category: Science - Earth/Agricultural/Farming 79222 2025-09-20T05:55:05.227298 text/html 51758 2024-10-24T18:01:23 text/html 978032 2025-09-20T05:55:09.705264 application/epub+zip 976680 2025-09-20T05:55:07.234320 application/epub+zip 91180 2025-09-20T05:55:06.194293 application/epub+zip 1021426 2025-09-20T05:55:11.291257 application/x-mobipocket-ebook 1006937 2025-09-20T05:55:08.717288 application/x-mobipocket-ebook 122519 2022-09-22T15:25:15.291423 application/x-mobipocket-ebook 58758 2025-09-20T05:55:04.854370 text/plain; charset=us-ascii 38919 2024-10-24T18:01:23 text/plain; charset=us-ascii 15786 2025-09-20T05:55:11.413247 application/rdf+xml 23611 2025-09-20T05:55:06.278284 image/jpeg 3571 2025-09-20T05:55:06.237273 image/jpeg 895680 2025-09-20T05:55:05.259304 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog