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Bezig met laden... Roadside Geology of Idaho (1989)door David D. Alt, Donald W. Hyndman
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Onderdeel van de reeks(en)Roadside Geology Series (Idaho)
Presents a general overview of Idaho geology, and features individual discussions of four regions--the Panhandle, central Idaho, the Snake River Plain, and the southeastern mountains--each of which includes a series of roadguides that provide the local specifics. Geen bibliotheekbeschrijvingen gevonden. |
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Google Books — Bezig met laden... GenresDewey Decimale Classificatie (DDC)557.96Natural sciences and mathematics Earth sciences & geology North America West Coast U.S. IdahoLC-classificatieWaarderingGemiddelde:
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Kind of a historical thing. The book was published after the recognition of shocked quartz and iridium in the Cretaceous-Paleogene boundary, but before the Chixulub crater in Yucatan was discovered. The authors speculate that the Deccan Traps mark the impact that ended the Cretaceous. Apparently this theory is not quite dead today, though the impact origin of the Shiva feature off the west coast of India is debated. There does seem to be an indication of a cluster of large impacts at about the right time, so it's faintly possible Chixulub was only part of the story.
Otherwise, a pretty good book, with some nice explanation of accretionary wedges from subduction zones. (There are some very old such features in Idaho from when the West Coast was just west of Boise.) Also a bit on mining, which surprised me by not ranting about the irresponsibility of using the cyanide method. ( )