
Fujita's Tectonic Theory
Fujita’s Tectonic Theory suggests that the Earth's outer shell, or lithosphere, is divided into large, rigid segments called tectonic plates. These plates move gradually atop the semi-fluid asthenosphere beneath them, driven by forces like mantle convection. Their slow movements cause continents to drift, create mountain ranges, and lead to earthquakes and volcanic activity at plate boundaries. In essence, the theory explains the dynamic nature of Earth's surface, emphasizing that the planet's crust is made up of interconnected plates continually shifting over geological time.