A Preliminary Report on a Part of the Phosphates and Marls of Georgia (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ...of the water, that it was found impossible to secure specimens for examination. EAST OF THE FLINT RIVER Thnt portion of Decatur county, lying east of the Flint river, has a 'more varied topography, than its western part. In the vicinity of Whigham, the surface becomes quite rolling and broken, many of the bills reaching an elevation of nearly 300 feet above the sea-level. The small streams in this locality are often rapid, and flow in deep channels, cut in the clays and underlying limestone. The more level areas, known as the piney woods, have their numerous lime-sinks and slues, rhe abandoned beds of former streams, all exposing, to a greater or less extent, the formations beneath the superficial clays and sands. THE REX) BLUFF EXPOSURES The Flint river, which traverses, in a southwestern direction, the central portion of the county, exposes, at numerous points along its course, high banks, where the different formations may be studied. One of the most interesting of these exposures occurs on the right bank of the river, about seven miles above Bainbridge, at what is known as Red Bluff. Just below this point, running parallel with the river, and extending back from it, for some distance, is a terrace, fifteen or twenty feet high. This natural embankment gradually approaches the river, where it finally terminates, forming the upper part of the bluff. At the base of the bluff, which is, here, more than forty feet high, and almost perpendicular, is to be seen, near the surface of the water, a light brownish-colored limestone, whose weathered surfaces exhibit many irregular cavities and angular projections, of fantastic shape. The limestone contains a considerable quantity of siliceous material, frequently in the form of shell-casts. Fossil oysters, sea-urchin...