zingghttp://www.oed.com/dictionary/zingg_n%3Ftab%3Dmeaning_and_useZingg, n.
Revised 2021

Zinggnoun

Geology.
  1. 1941–
    As a modifier. Used with reference to Theodor Zingg's system of classification of pebble shapes, in which two ratios formed from three mutually perpendicular diameters are used to assign a pebble to one of four basic shape classes according to its degree of flatness and elongation.
    1. [1939
      Relation between Zingg's pebble classes and the index of elongation.
      Journal Sedimentary Petrol. vol. 9 128/1 (caption) ]
    2. 1941
      Relation between sphericity and Zingg shape classes.
      Journal of Sedimentary Petrology vol. 11 67/1 (heading)
    3. 1979
      Very simple probabilistic methods were used to estimate the formation of the four basic Zingg shapes (disks, spheres, blades and rods).
      Nature 8 February 496/3
    4. 2009
      The Zingg diagram reflects the sphericity of the pebbles in the deposit.
      Estuaries & Coasts vol. 32 334/2

Zingg, n. was revised in March 2021.

Zingg, n. was last modified in July 2023.