laccolite

/lækəlaɪt/

Definitions

1. noun

A type of volcanic landform formed by the eruption of magma into a chamber beneath the Earth’s surface, causing the overlying rock to be pushed upwards and form a dome-shaped structure.

“The geologists studied the unique formation of the laccolite, trying to understand its geological history.”

Synonyms

  • intraplate volcano
  • volcanic plug

Antonyms

  • subduction zone
  • volcanic caldera