The significance of toolmarks on a Silurian erosional furrow
- 1 September 1972
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 109 (5), 405-410
- https://doi.org/10.1017/s0016756800039789
Abstract
The toolmark pattern on an erosional furrow from the Llandovery shelf sequence in the Welsh Borderland indicates that there was:— (i) local helical flow within the furrow similar to that found in sinuous alluvial streams and (ii) a moderately powerful current which moved towards the shore. Erosion by a shallow water turbidity current or storm surge tidal ebb flow therefore seems unlikely. A flood tidal current super-imposed on storm wave oscillatory disturbance of the sea-floor provides a possible mechanism.Keywords
This publication has 15 references indexed in Scilit:
- GENESIS OF LAMINATED SAND AND GRADED RHYTHMITES IN STORM‐SAND LAYERS OF SHELF MUDSedimentology, 1972
- Shallow-Water Sedimentation as illustrated in the Upper Devonian Baggy BedsGeological Society, London, Memoirs, 1971
- The origin of some transverse sand patches in the Celtic SeaGeological Magazine, 1970
- THE COMPOSITION AND STRUCTURE OF LOWER SILURIAN MARINE COMMUNITIESLethaia, 1968
- Wave activity at the sea bed around northwestern EuropeMarine Geology, 1967
- Experimental Turbidite Lamination in a Circular FlumeThe Journal of Geology, 1966
- Morphology and evolution of inshore shell ridges and mud-mounds on modern intertidal flats, near Bradwell, EssexProceedings of the Geologists' Association, 1966
- Primary Sedimentary Structures from the Silurian and Lower Devonian of the Oslo Region, NorwayNature, 1965
- The Analysis of Two-Dimensional Orientation DataThe Journal of Geology, 1956
- SAND MOVEMENT BY WAVES : SOME SMALL-SCALE EXPERIMENTS WITH SAND OF VERY LOW DENSITY.Journal of the Institution of Civil Engineers, 1947