Volcanism as early as 14.5 million years ago has been linked to the Anahim hotspot, with the latest eruption having taken place in the last 8,000 years. This volcanic activity has produced rocks that show a bimodal distribution in composition.
Early volcanism, dating back to approximately 14.5 million years, is linked to the Anahim hotspot, with the latest eruption happening in the past 8,000 years. These volcanic activities have resulted in rock formations that display a bimodal compositional pattern.