Hostname: page-component-84b7d79bbc-7nlkj Total loading time: 0 Render date: 2024-07-27T21:24:23.315Z Has data issue: false hasContentIssue false
  • English
  • Français

Basal sand and gravel patches with separate indications of tidal current and storm-wave paths, near Plymouth

Published online by Cambridge University Press:  11 May 2009

N. C. Flemming  and
A. H. Stride
N. C. Flemming
Affiliation:
National Institute of Oceanography, Wormley
A. H. Stride
Affiliation:
National Institute of Oceanography, Wormley
Get access Rights & Permissions [Opens in a new window]

Extract

Diving observations and more wide-spread coverage by Asdic show that the late Holocene basal neritic deposits of the broad bay between The Lizard and Start Point are represented by three main facies whose character depends on the two bed-transport paths converging there. The sheet sands laid at the end of the path with a good supply show a progressive geographical change in texture. On the other path, where sand is in short supply, there are elongated patches of somewhat coarser, well-sorted sand with ‘silt’ balls, alternating with shell-rich gravel patches. While the sand patches are laid out along the path of the strongest tidal currents, the ripple marks of the gravel can only be constructed by long waves from the Atlantic.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 47 , Issue 2 , June 1967 , pp. 433 - 444
Copyright
Copyright © Marine Biological Association of the United Kingdom 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Allen, E. J., 1899. On the fauna and bottom-deposits near the thirty fathom line from the Eddystone grounds to Start Point. J. mar. biol. Ass. U.K., Vol. 5, pp. 365–542.CrossRefGoogle Scholar
Belderson, R. H. & Stride, A. H., 1966. Tidal current fashioning of a basal bed. Mar. Geol., Vol. 4, pp. 237–57.CrossRefGoogle Scholar
Draper, L. Wave activity at the sea bed around north-west Europe. Mar. Geol., in press.Google Scholar
Flemming, N. C., 1965 a. Sediment ribbons off the south Cornish coast. Rep. Challenger Soc., Vol. 3, pp, 42–3.Google Scholar
Flemming, N. C, 1965 b. Operational diving with oxy-helium self-contained diving apparatus. Malta ’65. Underwater Association. Symposium proceedings.Google Scholar
Holme, N. A., 1953. The biomass of the bottom fauna in the English Channel off Plymouth. J. mar. biol. Ass. U.K., Vol. 32, pp. 1–49.CrossRefGoogle Scholar
Inman, D. L., 1957. Wave generated ripples in nearshore sands. Tech. Memo. Beach Eros. Bd U.S., No. 100, pp. 42+23.Google Scholar
Sager, G., 1961. Die Grosstgeschwindigkeiten der Gezeitenströme zur mittleren Springzeiten der Nordsee, dem Kanal und der Irischer See. Beitr. Meereskunde, Bd. I, pp. 19–26.Google Scholar
Stride, A. H., 1959. A linear pattern on the sea floor and its interpretation. J. mar. biol. Ass., U.K., Vol. 38, pp. 313–318.CrossRefGoogle Scholar
Stride, A. H., 1963. Current-swept sea floors near the southern half of Great Britain. Q.Jl geol. Soc. Lond., Vol. 119, pp. 175–199.CrossRefGoogle Scholar
Veen, J. Van, 1936. Onderzoekingen in de Hoefden. S’-Gravenhage: Algemeene Landsdrukkerij.Google Scholar