Lives/Generations 15 - 1 15
0 - 1 180
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0 - 1 180
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0 - 1 180f
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360 - 180 180
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180 - 1 180
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15° |
1243 |
97 |
1.12 |
1.39 |
.33 |
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15° |
1246 |
97 |
1.34 |
1.39 |
.33 |
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11th Galactic year 2.75 - 2.5
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10th Galactic year 2.5 - 2.25
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Precambrian Eon 4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Paleoproterozoic Era
2.5 - 1.6 900,000,000
Siderian Period 2.5 - 2.3 200,000,000
2.5 City of Rocks National Reserve, 2mi N SC Idaho border with Utah. spires 28-million-year-old Almo pluton. some of the oldest rocks W USA. |
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Precambrian Eon 4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Paleoproterozoic Era
2.5 - 1.6 900,000,000
Siderian Period 2.5 - 2.3 200,000,000
2.45 - 1.85 .6 Stage 2 O2 produced, but absorbed in oceans and seabed rock. |
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