The Earth has several different layers—the crust, the mantle, and the core. The part that we live and walk on is the crust, the outer-most layer. It is very thin in comparison to the other layers and is made up of two parts—the continental crust and the oceanic crust, both of which are made up of minerals. The continental crust ranges from 25 to 70 kilometers thick, while oceanic crust is between 65 and 100 kilometers thick.
I believe you are asking about is the geosphere – as this is the portion that includes rocks, the layer of oceanic and continental crust. This outermost portion of the geosphere is what we walk on every day, and what holds the oceans in place.
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