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The rocky crust of the Earth is primarily composed of igneous, sedimentary, and metamorphic rocks. These rocks are made up of various minerals, with common ones including quartz, feldspar, and mica. The continental crust is generally thicker and less dense than the oceanic crust, which is mainly composed of basalt. Together, these materials form the outer layer of the Earth, supporting landforms and ecosystems.

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rocky almost cement crust like granite found in continental crust and basalt found in oceanic crust


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