It occurs in soft, soapy, amorphous masses, filling veins in serpentine and cavities in trap rock.
An upheaval of trap rock on Clam creek has caused the waterfall from which the town has taken its name.
There is an upheaval of trap rock in section 2 and copper specimens abound.
Many of the stones and boulders thus obtained are of trap rock, and in general it may be said that all hard field and river stones, if broken to a proper size, will make fairly good and sometimes very excellent road metal.
It consisted of trap rock, as did also the range to which it belonged, being rather a lateral feature thereof.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "trap rock" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
