landmass; block
Refers to a large, distinct mass of land, often used in geography or geology. 'Block' can refer to a tectonic block or a large piece of land.
This region is divided into several landmasses.
The movement of blocks can sometimes cause earthquakes.
tilt block; tilted fault block
block movement
Compound of 地 (chi, 'earth, land') and 塊 (kai, 'lump, mass'). The reading ちかい is the on'yomi for both characters.