What are the evidences of isostacy?

Evidence of isostasy includes the compensation of weights on Earth's lithosphere by buoyant forces in the asthenosphere, as seen in the rebound of crust after glacial retreat. This is supported by measurements of gravity anomalies, topography variations, and seismic data showing different densities of lithospheric materials. Isostasy also explains the relative stability of Earth's crust over geological time scales.