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001 49966
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040 _aUtSlPG
041 7 _aen
_2iso639-1
050 4 _aQE
100 1 _aRobinson, Charles Sherwood,
_d1920-
245 1 0 _aGeology of Devils Tower National Monument, Wyoming :
_bA Contribution to General Geology
264 1 _aSalt Lake City, UT :
_bProject Gutenberg,
_c2015
300 _a1 online resource :
_bmultiple file formats
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
500 _aRelease date is 2015-09-14
508 _aProduced by Stephen Hutcheson, Dave Morgan and the Online Distributed Proofreading Team at http://www.pgdp.net
520 _a"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.)
534 _nOriginal publication data not identified
653 _aGeology -- Wyoming -- Devils Tower National Monument
856 4 0 _uhttps://www.gutenberg.org/ebooks/49966
999 _c90804
_d90804