The Physical Origin of Certain Concretions

James H. Gardner
The Journal of Geology
Vol. 16, No. 5 (Jul. - Aug., 1908), pp. 452-458
Stable URL:
Page Count: 7
  • Download PDF
  • Cite this Item

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:


Log in to your personal account or through your institution.

The Physical Origin of Certain Concretions
We're having trouble loading this content. Download PDF instead.

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.