Figure 1. Huntec boomer reflection profiles just north of Admiralty Inlet showing folded and tilted reflectors, truncated at the seafloor. These beds are probably latest glacial marine sediment of unit 3a (see Surficial Geology). The data shown are presented as the envelope of amplitude. Although glacial tectonic processes can cause such deformation, these features occur along the projected trace of the South Whidbey Island Fault as observed on deeper seismic reflection, magnetic and gravity data.

Figure 2. A portion of PGC96006 Line 9A, just east of Dungeness Bay, crossing the projected trace of the Hood Canal Fault. The top figure is a Huntec Boomer profile, the bottom is the multichannel seismic data. These figures are interpreted as showing a structural fold/fault with disrupted reflectors and failed sediment at the surface