Congressional Edition Volume 6425 (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. 1913 Excerpt: ... in these wells near the surface. Areal distribution.--Marine limestones have been found to underlie the shore of the mainland wherever samples have been collected, from Jewfish Creek westward and northwestward to near Marco. They outcrop in the southernmost patch of the west-coast pineland 3 miles northeast of the head of Rock Creek and at the heads of Turners and Aliens rivers and Hendersons Creek. At Everglade the writer was told that limestones are found nearly to the border of the Everglades, 12 miles to the east, and at Hendersons Creek he was informed that outcrops making bare ridges occur in the pineland. Limestone is also reported along the road from Fort Myers to Fort Shackelford, but the marine origin of exposures more than 20 miles from the coast of southern Florida has not been established. Origin.--Willis 1 has suggested that the rock at Lostmans River was perhaps formed by the deposition of crystallizing calcium carbonate from the presumably limy waters of the Everglades. There can be no doubt that deposits of marl are now accumulating along the coast, but the present hardening of marl to crystalline limestone or the direct deposition of such limestone is not established. As the writer has stated, the bedrock of the western coast, wherever soundings have been made, whether in the Everglades, on swamp islands along the coast, or in the numerous creek channels, seems to slope gently toward the Gulf. The rock is no farther below water level in the swamp than in adjacent channels; moreover, the rock surface in channels where the current runs strongly is full of crevices, is extremely rough, and is evidently being eroded. Loose fragments that have been detached by solution are found not only near the mouths of rivers but at their heads, on the bar...