 ... clays are already known and as exploration advances new ones are frequently discovered. Some of the more typical exposures will now be described. Along the shore, about a mile below Bodkin Point, Anne Arundel County, the variegated clays of the Raritan...  Calvert County - Page 113by Maryland Geological Survey - 1907 - 227 pagesFull view - About this book
 | Maryland Geological Survey - 1906 - 406 pages
...the section and carry an abundance of lignite more or less encrusted with crystals of pyrite. Sand and gravels of the Talbot formation unconformably...stream must have established its valley on the Raritan sand, for here the surface of that formation, like a great concave depression, passes gradually beneath... | |
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