地塊 is read as ちかい (chikai) and means landmass.
ちかい
chikai
ちかいうんどう
block movement
けいどうちかい
tilt block
ちか
the price of land
じばん
foundation (building, etc.)
じごく
hell
ちきゅうぎ
Earth globe (model)
ちけん
District Public Prosecutor's Office
ちさい
district court
ちかく
(Earth's) crust
じらい
land mine
ちかくへんどう
diastrophism (movement and deformation of the earth's crust)
ちほうさいばんしょ