Syndimentary deformation refers to deformation that occurs during or just after sediment deposition. It typically involves structures like convolute bedding. These deformations are often seen in fine-grained sediments under the influence of gravity or fluid movement, causing folding or warping while the sediment is still soft and unconsolidated.
[6pt]
- Festoon bedding (A) is a type of cross-bedding that forms in environments with strong water currents but is not directly related to syndimentary deformation.
- Flaser bedding (B) refers to alternating layers of fine and coarse sediments, usually in tidal environments, but it is not related to syndimentary deformation.
- Tabular bedding (C) refers to flat, horizontal layers of sediment and is not associated with deformation.
Thus, convolute bedding (D) is the correct answer, as it is characteristic of syndimentary deformation.