Report of the State Board of Geological Survey for the Year; Being the Report of Volume 10, Pp. 121-346

Report of the State Board of Geological Survey for the Year; Being the Report of Volume 10, Pp. 121-346

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...It is apparent, on giving the matter consideration, that the zonal arrangement described, is primarily controlled by the depth of water in which the characterizing plants will grow most free from the competition of other types. It follows that in shallow water, or on wet, swampy soil, the whole area may be occupied by plants of a single zone, and all of the peat may be built up by such a group, if, as the surface of the peat is built upward, the water rises with it. On flat areas this not infrequently occurs, and the whole deposit may have been formed by plants of a single type, such as sedges, or shrubs, together with Sphagum and sedges. ' Because there are so many possibilities as to its origin, peat may vary in structure, color, density, degree of decomposition, compactness and. in other properties, not only in different deposits, but different parts of the same bog. Not only is this true, but it is invariably the case in filled, deep depressions, in which the lower parts of the deposit are made up of the disintegrated remains of water plants, while the top strata may be wholly composed of the fibrous residue of sedges and other grass-like plants, or, of these mixed with the remains of mosses and of the more-woody remains of shrub and trees. In Tuscola county, the areas where peat in considerable quantities may be looked for, lie chiefly in the eastern and southeastern parts in the townships of Novesta, Kingston, Wells, Fremont, Dayton and Koylton. ' In most of the swamps in these townships, there was peat at the surface but no soundings were made to determine its depths. It is probable that smaller and shallower deposits also exist in many of the other towns, and such were noted in Columbia township on 'sections 1, 2, 11, 13, 14 more

Product details

  • Paperback | 94 pages
  • 189 x 246 x 5mm | 181g
  • United States
  • English
  • black & white illustrations
  • 1236897102
  • 9781236897107