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Each mineral has distinct physical properties, and there are many tests to determine each of them.The specimens can be tested for: This study is often known as Quaternary geology, after the Quaternary period of geologic history.Modern geology significantly overlaps all other earth sciences, including hydrology and the atmospheric sciences, and so is treated as one major aspect of integrated earth system science and planetary science.Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure.Seismologists can use the arrival times of seismic waves in reverse to image the interior of the Earth.

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This coupling between rigid plates moving on the surface of the Earth and the convecting mantle is called plate tectonics.

However, unlithified material does not only include sediments.