Excerpt from South Carolina, a Primer: An Article Prepared for the Encyclopedia Americana They belong to the Eocene and are composed of corals and gigantic oyster shells. Just above tide water they pass under the Ashley and Cooper marls, composed of many-cham bered shells (foraminifera), sometimes of so fine and compact a structure as to fit them for building purposes. Fragments broken from these marls and rounded by wave action form the phosphate rock of commerce. These nodules contain 55 to 61 per cent. Of phosphate of ...
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Excerpt from South Carolina, a Primer: An Article Prepared for the Encyclopedia Americana They belong to the Eocene and are composed of corals and gigantic oyster shells. Just above tide water they pass under the Ashley and Cooper marls, composed of many-cham bered shells (foraminifera), sometimes of so fine and compact a structure as to fit them for building purposes. Fragments broken from these marls and rounded by wave action form the phosphate rock of commerce. These nodules contain 55 to 61 per cent. Of phosphate of lime and have been quarried at the depth of one to six feet; they are also found on the bottom of the rivers, and on sea bottoms ex tending from North Carolina to Florida. The remains of the mastodon, elephant, tapir, horse, cow, and hog are found mingled with them, though the Europeans met none of these animals on their arrival, nor were any of the Indians acquainted with them. These marls afford excellent structural limes, and material for the manufacture of artificial cement. Green sands containing 4 to 6 per cent. Of potash in the form of glauconite also occur here. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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