shale is a rock, some shale has oil in it.
shale is a rock, some shale has oil in it.
This reminds me of an individual from South America who gave a speech in our Toastmaster club about his mother in law who had kidney stones, only he called them kidney rocks.
Words have meaning and rocks to me are those things I picked up out of the field as a kid(grin).
I blame it on the reporter who didn’t know how to spell shale but could spell rock.