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Definition
| The combination of Earth's so-called spheres, including the lithosphere, hydrosphere, and atomosphere. |
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| The source and upper part of a stream. |
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Historical geology
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Definition
| A major branch of geology concerned with the evolution of Earth's and its life since Earth's origin. |
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Definition
| Rock formed from molten (magma) or partly molten material in the earth. |
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Definition
A point from which to measure; an indicator.
Index fossils mark the age of an area. |
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Definition
| A fossil that is found over a relatively short span of geological time and can be used in dating formation. |
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Definition
| Describes igneous rock that cooled below Earth's surface; formed from magma. |
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Definition
| A daily, written record of personal experiances and observations. |
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Definition
| A shape or feature of Earth's surface, such as a delta or canyon. |
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Definition
| Molten rock that comes to Earth's surface through a valcano or other cracks in Earth's surface. |
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Term
Law-Of-Fossil-Succession
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Definition
| A geological law that states that the kind of plants and animal found as fossils change overtime and that the relative age of rocks can be figured out by the types of fossils in the rocks. |
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Definition
| A thickness or bed of rock. |
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Definition
| The process that changes sediments into rocks. |
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Definition
| The solid portipon of the world. |
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Definition
| Molten rock that forms naturally below Earth's surface. |
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Definition
| The layer or Earth below the crust and above the core. |
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Definition
| Material that holds sediments, such as sand, together in a sedimemtary rock. |
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Definition
| A geological era; means"middle life." |
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Meta Morphic rock
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Definition
| A rock that has changed from another rock because heat, pressure, or a chemical reaction. |
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Term
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Definition
| A naturally occuring in organic, solid consisting of a single element or compound that has a definite chemical compostion and internal arrangment of atoms. |
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Term
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Definition
| Melted; changed into liquid formed by heat |
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