Upon this comes hard beds of quartzose sandstone and conglomerate often obliquely laminated but of no great thickness and then a series of white, red, pinkish and grey sandstone beds occupying many hundred feet vertically, being interstratified with beds... British Guiana: The Essequibo and Potaro Rivers, with an Account of a Visit ... - Page 72 by Edward John Webber - 1873 - 82 pages Full view -
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