Geology rocks

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The Oldest Known Rock on Planet Earth – Geology In
The Acasta Gneiss is a tonalite gneiss in the Slave craton in Northwest Territories, Canada. The rock body is exposed on an island about 300 kilometres north of Yellowknife.
Red Granite
This rock is a foliated metamorphic rock. Note the banding that goes through the rock from one side to the other.
Easy Ways to Identify Igneous, Sedimentary, and Metamorphic Rocks
Everything You Need to Identify Rocks
What Hornfels Is and How It Forms
Learn about the metamorphic rock called hornfels, including how it gets it name, its composition, characteristics, sources, and uses.
Rocks and Mineral Identification Table - 911Metallurgist
Diorite: Igneous Rock - Pictures, Definition & More
How To Identify Your Rock: Beginners Guide To Rock and Mineral Identification
How To Identify Your Rock: Beginners Guide To Rock and Mineral Identification - Rock Seeker
Gneiss: Metamorphic Rock - Pictures, Definition & More