Tectonic Unit: JS
         Name: Shuksan
 
  Description: greenstone derived from oceanic tholeiitic basalt;
               greenschist, blueschist, iron-manganese
               metasediments, carbonaceous phyllite, semischist
               derived from quartzo-feldspathic clastics,
               metaplutonic rocks; marine
 
    Formation: Coast Belt
                  Shuksan Terrane
                       J    Shuksan, Darrington, Easton
 
    Age Range: Lower and Middle Jurassic
  Maximum Age: 208.0 Ma
  Minimum Age: 157.1 Ma