The digital edition of all books may be viewed on our website before purchase. Excerpt from Field Guidebook, College Teachers Conference in Geology
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Vendeur : Forgotten Books, London, Royaume-Uni
Paperback. Etat : New. Print on Demand. This book provides an excellent guide to the geology and mineral resources of Oregon, focusing on the Cenozoic Era (the last 60 million years). The author takes readers on a journey through Oregon's geological history, starting with the Eocene epoch (60 to 40 million years ago). During this period, the state was covered by shallow seas where thousands of feet of volcanic rock and sediment accumulated, forming the Coast Range and Willamette Valley. A shift in tectonic activity in the Oligocene epoch (40 to 30 million years ago) led to the retreat of the sea, followed by volcanic eruptions that formed the Cascade Range. The Miocene epoch (30 to 15 million years ago) witnessed the formation of the Columbia River Basalt, which covered extensive areas in northeastern Oregon and southeastern Washington with thick layers of lava. The concluding Pliocene epoch (15 to 5 million years ago) marked the rise of the Cascade Range, which became a significant climatic barrier, shaping Oregon's distinct climate and ecosystems. The book's insights on Oregon's geological history are crucial for understanding the state's present-day landscape and the distribution of its mineral resources. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N° de réf. du vendeur 9781528415811_0
Quantité disponible : Plus de 20 disponibles
Vendeur : PBShop.store US, Wood Dale, IL, Etats-Unis
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LX-9781528415811
Quantité disponible : 15 disponible(s)
Vendeur : PBShop.store UK, Fairford, GLOS, Royaume-Uni
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LX-9781528415811
Quantité disponible : 15 disponible(s)