gigayear
Noun
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Noun
gigayear (plural gigayears) (abbreviated as: Gyr)
- A billion (109) years
- 1967, Rankama, Kalervo, Institute of Geology and Mineralogy, University of Helsinki, Helsinki, Finland, Megayear and Gigayear: Two Units of Geological Time
- 1982, A. M. Clarke, Carboniferous Sedimentary Basins of Northern Europe and the Nature of Emergence around the Margins of the Mesozoic Rifted Sedimentary Basin of the North Sea in Philosophical Transactions of the Royal Society of London, 305(1489), pp207-208.
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004