Tenerife making dyes, and plantains for use and export. In the commerce of the Canary Islands with the Americas of the 18th century, Tenerife was the hegemonic island, since it exceeded 50% of the number of ships and 60% of the tonnage. In the islands of La Palma and Gran Canaria, the percentage was around 19% for the first and 7% for the second. The volume of traffic between the Indies and the Canary Islands was unknown, but was very important and concentrated almost exclusively in Tenerife. Among the products that are exported were cochineal, rum and sugar cane, which were
Canary Islands third tallest volcano on Earth on a volcanic ocean island. All the islands except La Gomera have been active in the last million years; four of them (Lanzarote, Tenerife, La Palma and El Hierro) have historical records of eruptions since European discovery. The islands rise from Jurassic oceanic crust associated with the opening of the Atlantic. Underwater magmatism commenced during the Cretaceous, and reached the ocean's surface during the Miocene. The islands are considered as a distinct physiographic section of the Atlas Mountains province, which in turn is part of the larger African Alpine System division. In the summer of