The building and decorative stones of Maryland, containing an account of their properties and distribution (1898)
Merrill, George P. (George Perkins), 1854-1929, Mathews, Edward Bennett, b. 1869 · Baltimore, Johns Hopkins press · leaf 229
ltimoreand Harford coimties are several exposures of highly micaceous quartz-ose rocks, which were originally sandstones, but which have nowimdergone considerable change through dynamic metamorphism.These are most characteristically developed in Setters Ridge along theGreen Spring Valley, ten miles… … MARYLAND GEOLOGICAL SURVEY WM Q. CLARK STATE QEOLOQIST 1898LEGEND TUSCARORA S. S. | tV \ POTTSVILLE CONG (_ CAMBRIAN S. S POCONO S. S. : QUARTZ SCHIST | 9 | ORISKANY S. S.TBIASSIO S. S. I N i SLATE VOLUME !!. PLATE XXX.
Stone · Building stones
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