Succession (geology)

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Geology
Science of the solid Earth
Index Outline Category Glossary History (Timeline)
Key components Minerals Rock (Igneous Sedimentary Metamorphic) Sediment Plate tectonics Strata Weathering Erosion Geologic time scale
Laws, principles, theories Stratigraphic principles Principle of original horizontality Law of superposition Principle of lateral continuity Principle of cross-cutting relationships Principle of faunal succession Principle of inclusions and components Walther's law
Topics Composition Geochemistry Mineralogy Sedimentology Petrology Structure of Earth Landform structures Geomorphology Glaciology Structural Geology Volcanology Geologic history Geological history of Earth
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In geology, a succession is a series of strata or rock units in chronological order. Rock successions can be seen in cross sections through rock, for example in a road cut or cliff. With sedimentary layers of rocks, newer units will be above older units, except in cases of inversion.