Tectonic Unit: TrJN
         Name: Nicola
 
  Description: calc-alkaline andesite, dacite, rhyolite subaerial
               flows, ignimbrite, minor limestone passing
               eastward into augite and feldspar porphyry,
               andesite and dacite flows and volcanic clastics
               grading further eastward into relatively alkaline
               augite porphyry flows, analcite trachybasalt and
               trachyandesite, volcanic clastics and finally into
               shale, siltstone, limestone and minor quartzite;
               marine and nonmarine
 
    Formation: Intermontane Belt
                  Quesnel Terrane
                       TrJ   Takla
                       uTr   Nicola, Ellemeham
               Omineca Belt
                  Quesnel Terrane
                       lJ    Rossland: Archibald, Elise
                       uTr   Slocan, Ymir, Brooklyn, Nicola, Shonektaw
 
    Age Range: Upper Triassic - Lower Jurassic
  Maximum Age: 235.0 Ma
  Minimum Age: 178.0 Ma