carboniferous : Idioms & Phrases

Index

Carboniferous age

  • (Geol.), the age immediately following the Devonian, or Age of fishes, and characterized by the vegatation which formed the coal beds. This age embraces three periods, the Subcarboniferous, the Carboniferous, and Permian. See Age of acrogens, under Acrogen.
Webster 1913

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 ∨ period. See the Diagram under Geology.
Webster 1913

carboniferous period

  • noun from 345 million to 280 million years ago
    Carboniferous.
WordNet

lower carboniferous

  • noun from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects
    Missippian period; Lower Carboniferous; Mississippian.
WordNet

lower carboniferous period

  • noun from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects
    Missippian period; Lower Carboniferous; Mississippian.
WordNet

upper carboniferous

  • noun from 310 million to 280 million years ago; warm climate; swampy land
    Pennsylvanian period; Upper Carboniferous; Pennsylvanian.
WordNet

upper carboniferous period

  • noun from 310 million to 280 million years ago; warm climate; swampy land
    Pennsylvanian period; Upper Carboniferous; Pennsylvanian.
WordNet