noun
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.
この地域はいくつかの地塊に分かれている。
This region is divided into several landmasses.
地塊の移動が地震の原因となることがある。
The movement of blocks can sometimes cause earthquakes.