“Clinoform” is a term originally introduced by Rich (1951) to describe the shape of a depositional surface at the scale of the entire continental margin (Figure 1a). In the current geologic literature, the term “clinoform” denotes strata packages with oblique internal layering, best imaged on seismic reflection profiles, where three geometric elements are recognized: (1) “topset,” the most shallow and low-angle area, (2) “foreset,” the central and steepest area, and (3) “bottomset,” the flat area farther basinward (Figure 1b) (Mitchum et al., 1977). The break in seafloor slope between the topset and the foreset is often called the “rollover point.”

Cattaneo, A., F. Trincardi, L. Langone, A. Asioli, and P. Puig. 2004. Clinoform generation on Mediterranean margins. Oceanography 17(4):104–117, https://doi.org/10.5670/oceanog.2004.08.

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