K-T boundary (English, noun)
expansion: K-T boundary
Senses:
glosses: The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.
glosses: The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.
This transition is marked worldwide by a layer of material that contains a high level of iridium.
This transition is marked worldwide by a layer of material that contains a high level of iridium.
Forms:
form: K/T boundary
tags: alternative
form: KT boundary
tags: alternative