Formation of the Hawaiian Islands: A Volcanic Hotspot Over Millions of Years

The Hawaiian Islands formed as the Pacific Plate moved northwest over a stationary volcanic hotspot in the Earth's mantle. This process, ongoing for millions of years, created a chain of volcanic islands:

1. Hotspot Volcanism – Magma erupts through the ocean floor, building submarine volcanoes.
2. Island Emergence – Continued eruptions build islands above sea level.
3. Erosion & Subsidence – Wind, waves, and plate movement wear down and sink older islands.

Age progression: Kauai (oldest, ~5.1 million years) → Oahu → Molokai → Maui → Hawaii Island (Big Island, youngest, still actively erupting).