Once the sediments, ridges and troughs are located, we are able to use the database to extract orientations and other characteristics of these features. For example, the orientation of the topography can be computed from the paraboloid surface, and rose diagrams of the ridge and trough orientations reflect the fabric of up-turned Cambro-Ordovician sedimentary beds outcropping in this area. The unconsolidated sediments ponded within small basins have low topographic gradients with consistent tilts towards the southeast (mean 133°), which we interpret as due to offshore transport of Holocene sediments, possibly in response to storms.
