Near their northern limit Radiolarian cherts, mudstones and lavas of Arenig age rise from underneath the former along anticlines striking north-east and south-west.
The mudstones and siltstones probably were deposited along flood plains, while the lenticular sands and conglomerates were laid down in stream channels.
Where streams entered the lake tongues of deltaic deposits, sands or mudstones wedge into the Green River Lake sediments.
The Lower Ludlow rocks are mainly grey, greenish and brown mudstones and sandy and calcareous shales.
The Upper Ludlow rocks are mainly soft mudstones and shales with some harder sandy beds capable of being worked as building-stones.
At a distance of between only two and three miles the green mudstones and white indurated tuffs are to a great extent replaced by red sandstone and black calcareous shaly rocks, alternating together.
Shales and mudstones and impersistent limestones of Bala age come next in order, and, bounding the Vale of Towy on the north, extend as a narrow belt north-westwards towards the Presley hills.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "mudstones" in a variety of sentences. We hope that you will now be able to make sentences using this word.
