It contains beds of lignite, often valuable for coal, and is hence also called thelignitic group.
Thus the marine beds of the Lignitic series contain such characteristic Cretaceous forms as Inoceramus and Ammonites, along with a great number of Univalves of a distinctly Tertiary type (Cones, Cowries, &c.
The Jackson series is represented by lignitic clays and marls which occur at Jackson, Mississippi.
The lower portion of this "Lignitic formation" appears to be Cretaceous, and contains one or more beds of Coal; but the upper part of it perhaps belongs to the Lower Tertiary.
In England oil has been pumped up from the carboniferous strata of Coalbrook Dale, whilst in Sussex it has been found in smaller quantities, where, in all probability, it has had its origin in the lignitic beds of the Wealden strata.
Beside the Bovey Tracey lignitic beds to which we have above referred, other tertiary clays are found to contain this early promise of coal.
The coals are there bituminous to lignitic of Tertiary Age, usually folded in with the strata.
The coal was of the lignitic grade, but not of the best quality, and when other mines of better coal were opened the Bellingham Bay mines were closed.
Its thickness was about 3 feet 6 inches, of which there was a band of lignitic coal of three-quarters of an inch near the top, and five inches of the same near the bottom.
Judging from this outcrop, which I suspect does not do full justice to the bed, at least six feet of merchantable lignitic coal may be depended on from this seam.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "lignitic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
