Geologic Forces
The Hawaiian islands are each made up of one primary volcano, although many of the islands are composites of more than one. The Big Island (Hawaii), for example is made up of five volcanoes, to which two are active, Kilauea and Mauna Loa. These volcanoes were produced by the Hawaiian "hot spot" which is underneath the Pacific plate. This plate is in charge of every single volcano formed on Hawaii because the heat from a stationary hot spot deep within the Earths mantle creates magma that rises through the overlapping Pacific plate and erupts on the ocean floor. After thousands of years, the cooled magma or lava, created the Hawaiian islands.
Since these volcanoes were created about 30 million years ago, we can use a geologic time scale to find out that they formed.They formed in the Phanerozoic Eon, in the Cenozoic Era, the Paleogene Period, and the Oligocene Epoch, which is also when mammals became dominant.
Since these volcanoes were created about 30 million years ago, we can use a geologic time scale to find out that they formed.They formed in the Phanerozoic Eon, in the Cenozoic Era, the Paleogene Period, and the Oligocene Epoch, which is also when mammals became dominant.