Skip to main content Accessibility help
×
Home

Experiments on the Settling of Gastropod and Bivalve Shells: Biostratinomic Implications

  • Mary Anne McKittrick (a1)

Abstract

I measured the settling velocities and observed the settling behavior of sixteen molluscan species from Bahia la Choya. Bivalve shells stabilize in a concave-up fall position, and exhibit slower settling velocities than gastropod shells of similar weight and volume. Within individual species settling rates increase as the ratio of shell weight to maximum cross-sectional area increases. Five distinct fall-patterns occur: straight-fall, gliding, rotation, rocking, and oscillation.

Copyright

References

Hide All
Allen, J.R.L. 1984a. Experiments on the settling, overturning and entrainment of bivalve shells and related models. Sedimentology, 31: 227250.
Allen, J.R.L. 1984b. Experiments on the terminal fall of bivalve molluscs loaded with sand trapped from a dispersion. Sedimentary Geology. 39: 197209.
Alexander, R.R. 1984. Comparative hydrodynamic stability of brachiopod shells on current-scoured arenaceous subtrates. Lethaia, 17: 1721.
Behrens, E. W., and Watson, R. L. 1969. Differential sorting of pelecypod valves in the swash zone. Journal of Sedimentary Petrology, 39: 1559–165.
Berthois, L. 1965. Recherches sur le comportement hydraulique des débris organogènes. Sedimentology, 5: 327342.
Braithwaite, C.J.R. 1973. Settling behaviour related to sieve analysis of skeletal sands. Sedimentology, 20: 251262.
Futterer, E.K. 1978. Untersuchungen über die Sink- und Transport-Geschwindigkeit biogener Hartteile. Neues Jahrbuch Geologie und Paläontologie, Abhandlungen 155: 318359.
Krumbein, W.C. 1942. Settling-velocity and flume behavior of non-spherical particles. Transactions, American Geophysical Union, 32: 621632.
Lever, J. 1958. Quantitative beach research I. The “left-right phenomenon”: sorting of lamelllibranch valves on sandy beaches. Basteria, 22: 2151.
Maiklem, W.C. 1968. Some hydraulic properties of bioclastic carbonate grains. Sedimentology, 10: 101109.
Mehta, A.J., Lee, J., and Christensen, B.A. 1980. Fall velocity of shells as coastal sediment. Journal Hydraulic Division American Society Civil Engineering, 106: 17271744.
Menard, H.W. and Boucot, A.J. 1951. Experiments on the movement of shells by water. American Journal of Science, 249: 131151.
Nagle, J.S. 1967. Wave and current orientation of shells. Journal of Sedimentary Petrology. 37: 11241138.
Rubey, W.W. 1933. Settling velocities of gravel, sand, and silt particles: American Journal of Science, 25: 325338.
Schmiedel, J. 1928. Experimentelle Untersuchungen über die Fallbewegung von Kugeln und Scheiben in reibenden Flüssigkeiten. Physikalische Zeitschrift, 29: 593610.
Wadell, H., 1934. The coefficient of resistance as a function of Reynolds number for solids of various shapes: Journal of the Franklin Institute, 217: 459490.
Willmarth, W.W., Hawk, N.E., Harvey, R.L. 1964. Steady and unsteady motions and wakes of freely falling disks: The Physics of Fluids, 7: 197208.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed