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{Layla Vega}} Definitions you should know:

1. Relative age: The age of a rock or formation given relative to other rocks or formation, usually defined as a zone fossil name.

2. Absolute age: An approximate age for an archaeological or paleontological

3. Law of superposition: Key axiom based on observations of natural history that is a foundational principle of sedimentary stratigraphy and so of other geology dependent natural sciences

4. Unconformity: A surface of contact between two groups of unconformable strata.

5. Index fossils:

A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found.

6. Radioactive decay: The spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation

7. Half-life: (The time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate))


Basic Facts

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