The complete change which this abrupt ending of the coal-field causes in the aspect of the country is very singular.
One of the most celebrated in England is that called the "ninety-fathom dike," in the coal-field of Newcastle.
In the Sidney coal-field fifty-nine fossil forests thus occur in superposition.
The late Mr. Buddle, who described them to me, told me he had seen similar phenomena in the Newcastle coal-field.
The coal-field, or as it is sometimes called “the great black cake,” is of limited extent.
They were built at the eastern extremity of the coal-field, within easy reach of the iron ores.
In many of the quarries near the Cheshire coal-field you may watch the workmen cutting and shaping these stones.
In the Sydney coal-field fifty-nine fossil forests occur in superposition.
The mineral resources are great, and a coal-field still to be worked exists in it as large as the whole of Scotland.
A dike is a wall of extraneous matter, which divides all the beds in a coal-field.