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| A process by which the minerals of rock reform or change as a result of the changes of heat and pressure. The alteration of the minerals in rock without formation of magma. |
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| A dense fine-grained metamorphic rock with a variable composition. It can form from the contact metamorphism of basalt or shale. |
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| A clastic sedimentary rock composed primarily of sand grains that are held together by natural cement. |
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| A texture found in extrusive igneous rocks that have cooled too rapidly for mineral crystals to form. |
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| The ability of a material to hold water in open spaces, or pores. |
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| Describes atoms that breakdown spontaneously, releasing energy and/or subatomic particles to become different elements. |
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| A form of heat flow that moves matter and energy as density currents under the influence of gravity. |
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| Large scale motion Earth's crust that are responsible for uplift and mountain building. |
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| The settling, or release, of sediments that have been carried by an agent of erosion. |
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| Sorted sediments deposited by water from a melting glacier. |
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| The mass of solid and molten rock. |
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| Force that tends to dis tort rock, resulting in slow bending. |
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| An area of rock underneath the surface of the earth which absorbs and holds water. |
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| Atoms of the same element that contain different numbers of neutrons in their nucleus. |
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| Matching bedrock layer by rock type or by age. |
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