| Part of Speech | Definition | |
| Expression | 1. (Geol.), the series of rocks (including sandstones, shales, limestones, and conglomerates, with beds of coal) which make up the strata of the Carboniferous age or period.[Websters]. | |
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Common Expressions: CARBONIFEROUS FORMATION
| Expressions | Definition | ||
| Carboniferous formation | (Geol.), the series of rocks (including sandstones, shales, limestones, and conglomerates, with beds of coal) which make up the strata of the Carboniferous age or period. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
