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see also: title (mousehover text)
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by letter code
example: Gd
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-
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145Gd
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< 1 day
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V
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146Gd
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1–10 days
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I
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149Gd
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10–100 days
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B
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153Gd
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100 days–10 a
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G
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148Gd
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10–10,000 a
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Y
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150Gd
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10 ka–103 Ma
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O
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152Gd
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> 700 Ma
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R
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158Gd
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Stable
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Used in:
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by number code
0
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1–10 years
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1
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10–100 years
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2
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100–1k years
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3
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1k–10k years
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4
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10k–100k years
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5
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100k–1M years
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6
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1M–10M years
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7
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10M–103M years
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8
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103M–700M years
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9
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700M–14G years
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Used in:
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