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The Physical Origin of Certain Concretions

James H. Gardner
The Journal of Geology
Vol. 16, No. 5 (Jul. - Aug., 1908), pp. 452-458
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Page Count: 7
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Notes and References

This item contains 12 references.

  • 2
    J. D. Dana, Manual of Geology, 4th ed., p. 98.
  • 3
    J. E. Todd, "Concretions and Their Geological Effects," Bulletin of the Geo- logical Society of America, Vol. XIV, p. 361.
  • 4
    E. M. Kindle, "Concretions in Chemung of Southern New York," American Geology, June, 1904.
  • 5
    American Association for the Advancement of Science, Vol. IV, p. 12.
  • 1
    H. H. Kessler and W. R. Hamilton, "Orbicular Gabbro of Dehesa Co., Cali- fornia," American Geology, Vol. XXXIV, pp. 133-40.
  • 2
    Sitzungsberichte der niederrheinischen Geschichte, Vol. XIX, p. 185, 1862.
  • 3
    "Origin of Orbicular and Concentric Structure," Transactions of the American Institute of Mining Engineers, Vol. XXXVII, p. 39.
  • 1
    J. M. A. Sheldon, The Champlain Clays of the Connecticut Valley.
  • 2
    C. B. Adams, "Concretions," Second Annual Report on Geology of the State of Vermont, pp. 111-18.
  • 3
    "Champlain Clays," loc. cit.
  • 1
    G. P. Merrill, Rocks, Rock Weathering, and Soils, p. 37.
  • 1
    W. B. Phillips, "Iron Making in Alabama," Alabama Geological Survey.