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1
4500000000
1
Andesite
1
Aplite
1
Calcarenite
1
Chert
1
Diorite
1
Extrusive
1
Extrusives
1
Gabbro
1
Granite
1
Granodiorite
1
Igneous
Intrusive
1
Metamorphic
1
Not Specified
1
Phyllite
1
Schist
1
Sediment Layer
1
Sedimentary
1
Shallow Marine Sediments
1
Submarine
1
Syenite
1
Tonalite
1
Volcaniclastic
1
Years BP
1
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