Geoscience Reference
In-Depth Information
Figure 3.14.
The geomagnetic-reversal time scale. Black indicates periods of normal
polarity for the Earth's magnetic field; white, reversed-polarity periods. The grey
pattern indicates uncertain polarity. The anomaly or chron numbers, C1-C34 and
M0-M38, are on the right-hand side of the columns; the age (in Ma) is along the
left-hand side. Note that the International scale uses not 'Tertiary' and 'Quaternary'
but 'Paleogene' and 'Neogene'. (By Gabi Ogg, after Gradstein
et al
. 2004,
Geologic
Time Scale 2004
.)
