In the Earth sciences, parent rock, or parent material is the original geologic material from which soil develops. It may consist of bedrock (such as sedimentary, igneous, or metamorphic rock) or unconsolidated deposits such as glacial, fluvial, or volcanic sediments.
In the Earth sciences, parent rock, or parent material is the original geologic material from which soil develops. It may consist of bedrock (such as sedimentary, igneous, or metamorphic rock) or unconsolidated deposits such as glacial, fluvial, or volcanic sediments.
Source: Wikipedia "Parent rock" · CC BY-SA 4.0
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