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Time-rock unit
A body of rock established to serve as the material reference for all rocks formed during the same span of time. Each of its boundaries is synchronous. Chronostratigraphic units in order of decreasing rank are eonothem, erathem, system, series, stage.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
- Product: Dictionary of Mining, Mineral, & Related Terms - 2nd Edition
- Acronym-Abbreviation:
Other Languages:
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