Magmatic activity of the Franklin Glacier Complex spanned roughly four million years from the Late Miocene to the Early Pleistocene, with the most recently identified volcanic eruption having taken place around 2.2 million years ago.
The volcanic history of the Franklin Glacier Complex is characterized by activity that lasted for approximately four million years, from the Late Miocene to the Early Pleistocene, with the most recent event occurring around 2.2 million years ago.