- Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically 300–450 °C (570–840 °F) and 2–10 kilobars (29,000–145,000 psi). Greenschists commonly have an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine. The platiness gives the rock schistosity (a tendency to split into layers). Other common minerals include quartz, orthoclase, talc, carbonate minerals and amphibole (actinolite).
- Holman Road NW (writesofway.org)
Holman Road NW runs 1³⁄₁₀ miles from 15th Avenue NW just north of NW 87th Street to the intersection of Greenwood Avenue N and N 105th Street. For its last couple of blocks, it is Holman Road N. Work began on the diagonal street, then known as Holman Road № 1, in 1926 and was completed in 1929. (Holman Road № 2 is today known as Westminster Way N in Shoreline.)