Tectonic Unit: MTrC
         Name: Cache
 
  Description: mainly MORB-like tholeiitic to alkaline basalt,
               some alkali-enriched seamount basalt,
               serpentinized peridotite and dunite, gabbro,
               trondhjemite and diabase; most sub-greenschist,
               local blueschist; melange with blocks of Upper
               Triassic Nicola assemblage; radiolarian ribbon
               chert, argillite, volcanic sandstone and
               limestone, locally as bank, reef and lagoon
               complexes with Tethyan fossils; includes Jurassic
               radiolarian (MTrCJ) east of Fraser River fault;
               marine
 
    Formation: Intermontane Belt
                  Stikine Terrane
                       MTr  Cache Cr., Kedahda
                       CP   Horsefeed
                       P    Teslin, French Range
                       uP   Marble Canyon
                       M    Nakina
 
    Age Range: Mississippian - Upper Triassic
  Maximum Age: 362.5 Ma
  Minimum Age: 208.0 Ma