Final answer:
The density slope for the Coastal Geostrophic Current off the coast of Oregon can be caused by the longshore current and turbidite sedimentary deposits. The direction and width of the current depend on various factors.
Step-by-step explanation:
The density slope away from the shoreline toward the ocean that creates a Coastal Geostrophic (Davidson) Current off the coast of Oregon can be produced by two conditions: the longshore current and turbidite sedimentary deposits. The longshore current, which typically runs parallel to the shore, can generate a density slope when it carries sediment and water with different densities. This imbalance in density can create a slope that leads to the formation of a Coastal Geostrophic Current.
On the other hand, turbidite sedimentary deposits formed by slope failures can also contribute to the density slope. As these deposits are carried by currents, they sort the grains according to their density. This sorting process can lead to the formation of a density slope.
The direction and relative width of the Coastal Geostrophic Current off the coast of Oregon would depend on various factors such as the prevailing winds, water temperature, and coastal topography. Therefore, it's difficult to provide a specific direction and width without additional information.