S. Howlett-West Books: Geology
| gevonden: 3 boeken |
Mineral Resources of California Bulletin 191
Sacramento, CA: California Division of Mines, 1978. 3rd Printing. Paperback. B&W Illustrations; This is a trade sized paperback book. The book is in Very Good+ condition and was issued without a dust jacket. The book and its contents are in clean, bright condition. The text pages are clean and bright. There is a map in clean bright condition in a pocket at the rear of the book. "A 'Mineral Resource' is a concentration or occurrence of material of intrinsic economic interest in or on the earth's crust in such form, quality and quantity that there are reasonable prospects for eventual economic extraction. Mineral Resources are further sub-divided, in order of increasing geological confidence, into inferred, Indicated and measured Categories. Inferred Mineral Resource is the part of a mineral resource for which tonnage, grade and mineral content can be estimated with a low level of confidence. It is inferred from geological evidence and assumed but not verified geological or grade continuity. It is based on information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes which may be of limited or uncertain quality and reliability. ". Very Good+ .
-- Boeknummer: 37051
USD 20.00 [Appr.: EURO 18.75]
Catalogus: Geology
Trefwoorden: Geology California Division Of Mines Natural Resources Mineral Resources Mines Geology
Discovery at the Rio Camuy the Finding and Exploring of One of the Largest Caves in the Western World
New York: Crown Publishers, 1973. 1st Edition; 1st Printing. Hardcover. ISBN: 0517505940. B&W Photographs; This book is in Very Good+ condition and has a Very Good dust jacket. The book and its contents are in clean, bright condition. The text pages are clean and bright. There is a previous owner's embossed name stamp on the front endpaper. The dust jacket is crisp and clean but does have wrinkling to the laminate that was done during the publishing process. "The Cavernas del Río Camuy is the third largest cave network on the planet, and the largest in the Western Hemisphere. The Río Camuy (Camuy River) shaped the stalactites, stalagmites and sinkholes when coursing through the area more than a million years ago. Researchers unearthed the Río Camuy cave system in the late 1950s, though it was likely a re-discovery. Archaeologists believe Puerto Rico’s native population explored the area centuries before. Today, more than 10 miles of mapped trails run through the caves, with close to 20 entrances and additional, smaller cave networks that researchers have yet to probe." (from BBC travel website). Very Good+ in Very Good dust jacket .
Boeknummer: 41365
USD 20.00 [Appr.: EURO 18.75]
Catalogus: Geology
Trefwoorden: 0517505940 Geology Russell Gurnee Jeanne Gurnee Spelunking Spelunkers Caves Subterranean caves Puerto Rico
California Journal of Mines and Geology January 1956; Vol. 52, No. 1
San Francisco, CA: State of California, Department of Natural Resources, 1956. Paperback. B&W Illustrations; This is a trade sized paperback book. The book is in Very Good condition and was issued without a dust jacket. The covers are generally clean and bright, though there are a couple of numbered noted on the front cover in red pencil. The text pages are clean and bright. This is the annual report of the State Mineralogist Chief of the Division of Mines for the fiscal Year 1954 - 1955.. Very Good .
Boeknummer: 45023
USD 20.00 [Appr.: EURO 18.75]
Catalogus: Geology / Mining
Trefwoorden: Geology Mining Olaf P. Jenkins Californiana Division Of Mines
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