U.S. Geological Survey: Science for a Changing World - USGS visiaul identifier and link to main Web site at http://www.usgs.gov/

Sketches illustrating a possible evolution
      from a planar (topogenous) peat deposit to a domed
      (ombrogenous) peat deposit. For a more detailed explanation, contact Stanley Schweinfurth at sschwein@usgs.gov

Figure 23. Sketches illustrating a possible evolution from a planar (topogenous) peat deposit to a domed (ombrogenous) peat deposit. A, planar; B, transitional, slightly domed; and C, domed. A planar deposit may evolve into a transitional or domed deposit if climatic conditions change; the two types of peat deposits also may occur independently. No scale implied, but the horizontal dimension could be many miles and the vertical dimension could be 500 to 1,000 ft. Individual plant types were not identified in the source for this figure, but a typical flora might include cypress, magnolia, and willow trees; sassafras, sumac, and witch hazel shrubs; and ferns, reeds, and lilies as low-growing and water plants. Modified from McCabe (1987), used with permission of The Geological Society (London).

Explanation of patterns used in diagram

U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubs.usgs.gov /circ/c1143/html/fig23.html
For more information, contact Stanley Schweinfurth
Maintained by Eastern Publications Group
Last modified: 12:28:58 Wed 23 Nov 2016
Privacy statement | General disclaimer | Accessibility