Figure 2. This is an overview of the prominent outcrop of layered metamorphic rocks near the western end of the bridge. The layering that was originally horizontal is now nearly vertical (and closely parallel to the regularly spaced holes drilled for blasting the roadway). This is an almost edge-on view of the layering. Most layers are about 10 centimeters thick but some beds are up to a meter thick and others are thinner. Also notice a few prominent fractures near the bottom of the road cut.
Last updated on October 6, 2005