What does Age (Ma) stand for?
In the third graph on this webpage: http://www.soest.hawaii.edu/GG/HCV/haw_formation.h..., it mentions "Best K-Ar age (Ma)." Does "Ma" refer to Mean/Average Age, or does it signify something else?
2 Answers
Feb 04, 2025
Ma = millions of years ago;
K-Ar Age is the time, measured
in millions of years ago, when
the lava that erupted from the
volcano over the “hotspot”
cooled to form solid rock
(basalt).
http://www2.moundsviewschools.org/chippewa/userfil...
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