This thick, vertical coal seam at Garvey Creek, east of Reefton, shows mine workings in the 1950s. The seam is part of the Brunner coal measures, deposited as a peat swamp about 37 million years ago. The swamp deposits were later deeply buried, forming coal
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Vertical coal seam – Geology – overview – Te Ara Encyclopedia of New Zealand
Sedimentary rocks in the field by Visokovisoko - Issuu
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GC914Y2 PWGT1 - Waro in the Waikato (Huntly) (Earthcache) in North Island, New Zealand created by Bennett24, for MinistryofEducation
Pittsburgh coal seam - Wikipedia
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Combined geological column of coal seams.