Regarding the Shillbottle seam, you can see what happens to it as you head towards Amble on this borehole log.
This one was called the "Broomhill Deep Bore" circa 1912, drilled three quarters of a mile "south east of Morwick"
Dipping all the way from its outcrop at Shilbottle it is now at 2031 feet, and it has thinned to 1 foot 11 inches. If it still exists south of the Hauxley fault it will
pop back up a bit, be even deeper!
Also interesting to note from that bore is the change in strata from river delta type formations common in the Broomhill Hauxley area to the deeper marine like strata (when limestones start to come in) in which the Shillbottle and Townhead coals are found.
