The geology of the Black Hills National Forest is dominated by exposures of Precambrian rocks following erosion of the Paleozoic, Mesozoic, and Cenozoic sequences that were domed up from granitic intrusions and later eroded. Proterozoic plutonism metamorphosed and deformed many of the Precambrian rocks along with fault development. During these intrusive processes, gold deposits and associated mineralization occurred under several different types of emplacement. In addition to lode gold emplacement, erosion stripped many of ...
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The geology of the Black Hills National Forest is dominated by exposures of Precambrian rocks following erosion of the Paleozoic, Mesozoic, and Cenozoic sequences that were domed up from granitic intrusions and later eroded. Proterozoic plutonism metamorphosed and deformed many of the Precambrian rocks along with fault development. During these intrusive processes, gold deposits and associated mineralization occurred under several different types of emplacement. In addition to lode gold emplacement, erosion stripped many of the primary gold into placer gold deposits during Phanerozoic time. Three chapters are included to describe the geology of lode and placer gold in the Black Hills National Forest. Chapter 1 provides an introduction to the Black Hills geology. Chapter 2 presents Black Hills deposits mostly as lode gold deposits. Chapter 3 presents geomorphic descriptions of placer gold deposits and where they might be found.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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New. Trade paperback (US). Glued binding. 132 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.