Ridge Target (Plan Map)
The Ridge Target occurs on the east side of the Thor Anticline. This is a major geological structure that plunges approximately 20 degrees to the northwest under the prominent ridge north of the Thor deposits. Previous exploration in this area was completed in the early 1980's and there is one major access road in the area.
The topographic map shown to the left shows the location of the deposits at Thor, and these are aligned in a northwesterly direction. They occur on the east flank of the Thor Anticline; very similar to what is seen in the Silver Cup Mine to the southeast (refer to the overview).
There are two key aspects that can be seen on the topographic map. The first is the occurrence of several major gossans on the north side of the ridge. The two northeasterly gossans directly overly the Ridge Target, and is indicative of a sulphide source located below the surface. The second feature is that ore-bearing zones at Thor have a close spatial relationship to topographic highs. The southernmost Broadview deposit lies under Broadview Mountain and the True Fissure/Great Northern deposits lie under a separate prominent hill. The likely explanation for these hills is the presence of tuffaceous-sedimentary rocks of the Green Tuff unit that are more resilient to weathering, and also have a close spatial relationship to ore-bearing zones at Thor.