precambrian
IPA: prikˈæmbriʌn
Root Word: Precambrian
noun
- (geology) The Precambrian supereon; spanning from the formation of the Earth around 4.6 billion years ago to the emergence of hard-shelled creatures 541 million years ago.
adjective
- (informal, geology) Relating to the time and geology dated before the Phanerozoic
Advertisement
Examples of "precambrian" in Sentences
- See Timetable of the Precambrian.
- Forms a cap on top of Precambrian rocks.
- Precambrian basement around the red sea.
- See Precambrian for a chart of the timeline.
- The core of the mountain is Precambrian granite.
- The classic example is rabbit in precambrian rock.
- Precambrian rock is the major component of the bedrock.
- The strata, particularly of the Precambrian are complex.
- In the Precambrian, the supercontinent began to break apart.
- The central mass of the range consists of Precambrian metamorphic rocks.