0 containing or producing carbon: --
carboniferous rocks
1 from or referring to the period of time, between around 363 and 290 million years ago, when the first reptiles appeared and there were large forests covering the areas that later formed earth's coal layers: --
2 the period of time, between around 363 and 290 million years ago, when the first reptiles appeared and there were large forests covering the areas that later formed earth's coal layers: --
3 containing or producing carbon --
They are mostly built from the same carboniferous limestone used at the castle.
He was a leading paleobiologist and carried out some work on carboniferous palaeobotany.
The rock quarried was carboniferous mountain limestone which was used for construction and railway ballast.
It lies on carboniferous limestone with rock showing through the thin topsoils.
The site consists of a 19.5 ha strip of land surrounding a line of carboniferous limestone cliffs.
Carboniferous limestone was chosen for the blanket because of its inert chemical properties and it acts both as a drainage layer and as a working platform for the embankment construction.
They think that the bacteria and fungi which converted the undergrowth of the carboniferous jungles into coal can be stimulated to carry this process further and so liquefy the coal.
It is possible that some groundwater could be made available from the carboniferous stratum, but the quantities are expected to be small and the water quality poor.
