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Page 213
... sandstone depends upon its detrital grains and bonding material . An abundance of potassium feldspar often gives a pink colour ; this is true of many arkoses , which are feldspar - rich sandstones . Fine - grained , dark - coloured rock ...
... sandstone depends upon its detrital grains and bonding material . An abundance of potassium feldspar often gives a pink colour ; this is true of many arkoses , which are feldspar - rich sandstones . Fine - grained , dark - coloured rock ...
Page 214
... sandstones are created by the re- moval of the clay matrix by current action . The sand grains are , however , still poorly sorted in these rocks . Submarine sandstones are common as river - channel sands , tidal - channel sands , and ...
... sandstones are created by the re- moval of the clay matrix by current action . The sand grains are , however , still poorly sorted in these rocks . Submarine sandstones are common as river - channel sands , tidal - channel sands , and ...
Page 216
... sandstones of the Alps and Slovak Carpa- thians . The study of heavy minerals reveals many details about changes in source area and climate and aids in the cor- relation of sandstones . Quartzarenites contain only the most durable and ...
... sandstones of the Alps and Slovak Carpa- thians . The study of heavy minerals reveals many details about changes in source area and climate and aids in the cor- relation of sandstones . Quartzarenites contain only the most durable and ...
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