Department of Geology, University of California, Davis, California 95616, U.S.A.
Burrows and trails produced by Quinqueloculina impressa Reuss, a benthic foraminifer, in fine-grained sediment
Article first published online: 14 JUN 2006
Volume 29, Issue 6, pages 897–901, December 1982
How to Cite
SEVERIN, K. P., CULVER, S. J. and BLANPIED, C. (1982), Burrows and trails produced by Quinqueloculina impressa Reuss, a benthic foraminifer, in fine-grained sediment. Sedimentology, 29: 897–901. doi: 10.1111/j.1365-3091.1982.tb00093.x
- Issue published online: 14 JUN 2006
- Article first published online: 14 JUN 2006
- Manuscript received 15 February 1982; revision received 31 March 1982
The benthic foraminifer Quinqueloculina impressa Reuss, was buried in various types of sediment in order to assess its capability for producing sediment disturbances and thus, ichnofossils. Silts and silty-clays showed distinct burrows; fine sands did not. Two types of burrows were produced: fairly straight, vertical burrows from 4 cm below the water-sediment interface to within 1 cm of the sediment surface, and a horizontal and vertical maze-like burrow system in the top centimetre of the sediment. Individuals moving on the sediment surface also produced visible trails. When the sediments were dried the burrows were always destroyed; in some cases the surface trails were preserved. We propose that the vertical burrows are escape structures and that the horizontal and vertical maze-like structures are living burrows.
Ichnofossils similar to the escape structures and surface structures have been described. Presence of these ichnofossils indicates a low energy sedimentary environment and a lack of macrofaunal bioturbation. The presence of escape structures may indicate a pulsatory pattern of sedimentation.