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1,100,000,000 Years Ago
12000 years ago
12000 years ago
rocks let behind are for Canada
Limestone, Chert, Agate, Flint, Jasper
1,100,000,000 Years Ago
Rocks Formed
Chert, Jasper, Agate, Flint, Amygdaloidal Basalt
1,100,000,000 Years Ago
Vesicular Basalt , Ophitic Basalt, Porphyry Basalt, Gabbo, Rhyolite, Granite
1,100,000,000 Years Ago
Rocks Formed
Slate, Gneiss, Schist
1,100,000,000 Years Ago
Copper Harbor Conglomerate, Freda Sandstone, Jacobvill Sandstone, Nonesuch Shale