Rock Classification

Sedimentary rocks

Metamorphic Rocks

666

Igneous Rocks

Credits:

Created with images by functoruser - "mountains of sedimentary rock" • James St. John - "Cherry blossom stones (pinite) in hornfels (mid-Cretaceous, 98 Ma; Mikata, Honshu Island, southern Japan)" • James St. John - "Chalk ("Upper Chalk" Formation, Upper Cretaceous; White Cliffs of Dover, England, southern Britain)" • Grand Canyon NPS - "Grand Canyon National Park: Colorado River Runners 2804" • James St. John - "Greenstone (metagabbro) (metamorphism at ~2.7 Ga, Neoarchean; Rt. 169 roadcut south of Peyla, Minnesota, USA) 5" • James St. John - "Clinker (Wasatch Formation, Lower Eocene; coal fire metamorphism at 19 ka, Late Pleistocene; large block at Interstate 90 west-bound hilltop rest area, east of Buffalo, Powder River Basin, Wyoming, USA) 6" • James St. John - "Greenstone (metagabbro) (metamorphism at ~2.7 Ga, Neoarchean; Rt. 169 roadcut south of Peyla, Minnesota, USA) 1" • Zanikos - "ladybird etna italy" • James St. John - "Obsidian" • James St. John - "Snowflake obsidian"

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