noun
- a volcanic crater formed by an explosion of steam and gas, typically surrounded by a low rim of ejected rock fragments
Usage: geology; often found in areas with shallow groundwater
Examples
- The maar in the volcanic field was filled with water, creating a small crater lake.
- Geologists studied the maar to understand the region's volcanic history.
- Many maars in the area formed thousands of years ago.
- The explosion that created the maar was driven by superheated groundwater.
- Scientists identified several maars scattered across the landscape.