An anomalous crustal uplift was observed at the west coast of Boso Peninsula. The crustal uplift began at the same time as the mining of mountain rock which began about ten years ago.
It seems that the crustal uplift is the result of the elastic recovery deformation of the earth's crust caused by the man-made surface unloading.
An elastic modulus of the uppermost earth's crust estimated by the total amounts of crustal uplift and mined rock is about 1-2×1011dyne/cm2.
