Download Preliminary Report on the Economic Geology of Hazelton District, British Columbia (Classic Reprint) - John Johnston O'Neill file in PDF Online

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Excerpt from Preliminary Report on the Economic Geology of Hazelton District, British ColumbiaThe main valleys have all been eroded in rocks which are very much softer than those which form the hills; further, the cores of the hills are of igneous rocks in small stocks and these have metamorphosed and hardened the surrounding rocks, thus forming hard, resistant areas in a

Title : Preliminary Report on the Economic Geology of Hazelton District, British Columbia (Classic Reprint)
Author : John Johnston O'Neill
Language : en
Rating :
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Type : PDF, ePub, Kindle
Uploaded : Apr 10, 2021

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