I spent several hours trying to determine the species of lichen shown in the photo above. Finding the genus (Lecanora) was not difficult, but I could not narrow it down to the species.
My best guess (as a non-professional) would be that this is Lecanora pacifica, also known as Pacific rim lichens. This species has a very small area of distribution including a swath along the western coasts of Canada, the United States and northern Mexico. And add to that a small section in central Turkey. The location that these photos were taken lies within the known area of distribution.
None of the online photos I found which were listed as being Lecanora pacifica, looked much like my sample. I did find out that this species is difficult to identify by sight alone, because there is so much variation in its physical appearance. The few photos which did look like mine, did not have a species name listed.
I would be grateful to hear from anyone who is able to identify this variety. I have come to the conclusion that lichen identification is, in many cases a challenge best left to the experts.
For more information about lichens go to Discovering the World of Lichens.