Gauss-Matuyama reversal

The Gauss-Matuyama Reversal was a geologic event approximately 2.58 million years ago when the Earth's magnetic field underwent reversal.

This event, which separates the Piacenzian from the Gelasian and marks the start of the Quaternary,[1] is useful in dating sediments.

Biological effects

The event is marked by the extinction of calcareous nanofossils Discoaster pentaradiatus and D. surculus, among others.

gollark: SQLite doesn't actually support it.
gollark: I simply do not rename tables.
gollark: I see. I suppose this takes slightly less time than copy-paste.
gollark: I once (well, actually three times) used gdb.
gollark: I don't see how an SQL runner thing is better than a terminal which can run `sqlite3` or `psql` or `deploy_bees_against_any_database_ever`.

References

See also


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