GEOLOGY

Detailed explanation-1: -Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the seafloor, at what is called a “hot spot.” The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving.

Detailed explanation-2: -All of these volcanoes were built in an assembly line-like process that is driven by plate motion and a “hot spot, ” or plume of hot material, deep within the Earth. Heat from the Hawaiian hot spot partially melts mantle rock at depths starting about 200-400 km (125-250 mi) below Earth’s surface.

Detailed explanation-3: -Volcanoes. Over its 85 million year history, the Hawaii hotspot has created at least 129 volcanoes, more than 123 of which are extinct volcanoes, seamounts, and atolls, four of which are active volcanoes, and two of which are dormant volcanoes.

Detailed explanation-4: -Hawaii has Volcanic Origins Approximately 40 to 70 million years ago, the 137 islands of Hawaii began to form. Every island in the archipelago originated from multiple underwater volcanic eruptions. Magma burst from underneath the seafloor until it reached the ocean’s surface.