Essential of Geology , 2 ed.

Essentials of Geology, 2e

Glossary

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kame
A stratified sequence of lateral-moraine sediment that's sorted by water flowing along the edge of a glacier.

karst landscape
A region underlain by caves in limestone bedrock; the collapse of the caves creates a landscape of sinkholes separated by higher topography, or of limestone spires separated by low areas.

kerogen
The waxy molecules into which the organic material in shale transforms on reaching 100°C.

kettle hole
A circular depression in the ground made when a block of ice calves off the toe of a glacier, becomes buried by till, and later melts.

knob-and-kettle topography
A land surface with many kettle holes separated by round hills of glacial till.

K-T boundary event
The mass extinction that happened at the end of the Cretaceous period, 65 million years ago, possibly because of the collision of a bolide with the Earth.

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