sentences:  The complex lies on the overlapping trend of the Garibaldi and Pemberton volcanic belts, which were formed as a result of subduction zone magmatism along the Cascade Volcanic Arc in the last 29 million years.Two separate stages of magmatic activity have been identified at the Franklin Glacier Complex.The first magmatic stage about 6.8 million years ago involved the central emplacement of an elongated quartz monzonite stock.