PART II. ECONOMIC GEOLOGY. The Silurian and Devonian Clays and Limestones of Eastern Kentucky, WITH NOTES ON WAVERLY AND IRVINE CLAYS. (207) CONTENTS OF PART II. (209) KENTUCKY GEOLOGICAL SURVEY ...
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...Part ii economic geology the silurian and devonian clays limestones of eastern kentucky with notes on waverly irvine contents geological survey chemical characteristics ordovician rocks high bridge formations consist almost entirely limestone a percentage lime more than per cent calcium carbonate low silica less judging from few analyses so far recorded camp nelson oregon divisions are distinctly magnesian magnesium in case division to tyrone while is calcareous place compared curdsville bed lowest lexington formation consists crystalline this followed by argillaceous interbedded clay shales logana wilmore paris which forms top greater central again often formerly submitted analysis small some these contained very little others referred horizons here called accredited even perryville upper birdseye linney has not been studied as yet lower or greendale cynthiana predominate but point pleasant quantity material usually localities contains alumina along ohio river silicious at considerabl...