NOUN
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a unit of geological time during which a system of rocks formed
ganoid fishes swarmed during the earlier geological periods
How To Use geological period In A Sentence
- ganoid fishes swarmed during the earlier geological periods
- The peaks of Mount Kilimanajaro are now naked of snow for the first time in our own 10,000-year long geological period.
- These planation surfaces joined once each other imply that the vast southeastern part of China was in a state of peneplain during late geological period.
- Geological periods are defined with reference to a Global Boundary Stratotype Section and Point.
- Geologists care about sediments, hammering away at them to uncover what they have to say about the past—especially the huge spans of time as the Earth passes from one geological period to another.
- Because of this, clay becomes progressively less common in older geological periods and is almost never found in Precambrian formations.
- The swell of Qinghai-Tibet Plateau resulted in northern drought and the desert formation and the development in the geological period.
- (If you need to refresh your memory about geological periods and evolution, check out this figure).
- Human may define a geological period in the way dinosaurs -- and their vanishing act -- helped mark the Jurassic.
- The geological period known as the Cambrian is marked by the rather sudden appearance of all the basic forms of animals now in existence.