. A treatise on rocks, rock-weathering and soils;. Petrology; Soils. 304 THE REGOLITH Chemical Analyses of Swamp Deposits, jSToeth CAROLmA Constituents Silica (insoluble) (SiOa) Silica (soluble) (SiOg) , Alumina (AI2O3) . < Oxide of iron (^6203) Lime (CaO) .... Magnesia (MgO) . , Potash (K2O) . . , Soda (NajO) . . , Phosphoric acid (P2O6) , Sulphuric acid (SOg) . , Chlorine (CI) . . Organic matter (C) . , Water (H2O) . .. ir 0/, Column I of the above is from the margin — the oak fringe — of this great swamp, near North
. A treatise on rocks, rock-weathering and soils;. Petrology; Soils. 304 THE REGOLITH Chemical Analyses of Swamp Deposits, jSToeth CAROLmA Constituents Silica (insoluble) (SiOa) Silica (soluble) (SiOg) , Alumina (AI2O3) . < Oxide of iron (^6203) Lime (CaO) .... Magnesia (MgO) . , Potash (K2O) . . , Soda (NajO) . . , Phosphoric acid (P2O6) , Sulphuric acid (SOg) . , Chlorine (CI) . . Organic matter (C) . , Water (H2O) . .. ir 0/, Column I of the above is from the margin — the oak fringe — of this great swamp, near North Eiver, about 8 miles north of Beaufort; it is light gray to ash-colored with a growth of white oak, gum, maple, pine, and palmetto trees; the situation is low and flat. ''This margin belt of semi-swamp is from a half mile or less in width to above a mile. The surface rises towards the interior and is covered by a soil, if it may be called such, repre- sented by column II, which is 2 to 3 feet deep and upwards, and lies on a bed of white sea-sand. It consists of a loose open mass of half-decayed woody matter, of a brown color, and is in fact a superficial, uncompressed lignite; for it will be observed that the analysis includes nearly 10% of water, so that the dry sub- stance would give but 3|% of inorganic matter, not more than would be accounted for by the ash of the woody matter. The growth is a dense thicket of spindling shrubs with small scat- tered maples and ;^ Wiley has described^ deposits of a somewhat similar nature as covering 1,000,000 acres in the Kissimmee valley of Florida. These, which are of a dark brown to deep black color, contain in some cases as much as of organic and volatile matter, and vary from 3 to 20 feet in depth. Such, when properly ^ Geology of North Carolina, Vol. I, 1875. ^Agricultural Science, Vol. VII, No. 3, 1893, pp. Please note that these images are extracted from scanned page images that may have been digitall
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpetrolo, bookyear1913
