As can be seen from the geological map, the Yorkshire Coast is composed of shales, alluviums (sand, clay and gravel), oolites, limestones, mudstone, sandstones, ironstones and chalk. Typically, boulder clay is the section alongside the North Sea in the East Riding of Yorkshire and has been the most prone to
coastal erosion.
The Lost Towns of the Yorkshire Coast by Thomas Sheppard lists 30 settlements that were lost by the time his book was published in 1912.
Kilnsea Parish Church was destroyed by
coastal erosion in 1830. It had been noted that the sea was eating away at the coastline before the last burial in 1823. In 1824, services in the church were stopped and 6 years later, the church and many of the dwellings around it had been lost. Erosion rates are now averaging per year on the sections between
Hornsea and
Mappleton and from
Withernsea to the south. Many towns along the coast have installed defences to stop the sea claiming the land, but in some areas, the sea is taking the land and oftentimes is depositing it further down on Spurn Head. Both Withernsea and Whitby have used Norwegian rocks as sea defences. The Shoreline Management Plan 2, which covers the coastline from the Tyne to Flamborough Head admits that whilst towns such as Filey, Scarborough and Whitby should be protected, other settlements such as Robin Hood's Bay will see properties lost to coastal erosion. Robin Hood's Bay had concrete sea walls installed alongside its shoreline in 1973, but a report issued in 2014 stated that the structure was coming to the end of its design life. This stretch of coastline is also famous for the collapse of the
Holbeck Hall Hotel near to Scarborough in 1993. After a prolonged rainfall, water had seeped into the earth which destabilised the ground underneath the hotel causing a landslide. Television cameras managed to capture the building falling onto the shoreline below.
Whitby Jet Part of the coastal geological make-up in North Yorkshire is
Whitby Jet. Jet is a hard
Lignite mineraloid that was wood from Monkey Puzzle and Chilean Pine trees laid down 185 million years ago in the
Jurassic era. Jet is found on the beaches in the area and its popularity during the 19th century was down to
Queen Victoria who wore Jet jewelry as part of her mourning dress for
Prince Albert.
Petrified forest A 7,000-year old petrified forest stretches along the coastline south from
Hartlepool and along Redcar Beach. It was first discovered in 1871 when wild boar tusks and deer antlers were found in the sand. Storms in March 2018 revealed the extent of the ancient forest with petrified tree stumps being exposed to the open air on Redcar Beach when a combination of the storm and low tides removed all the sand from the beach.
Dinosaur Coast The coastline in Yorkshire is home to some of the world's best Jurassic and Cretaceous geology which has given it the nickname of the Dinosaur Coast. Fossils can easily be found on the beaches at Whitby, Staithes and
Runswick Bay with Britain's oldest dinosaur bone being found on Whitby beach in 2015. The bone fell out of a cliff face and after detailed analysis was found to be 176 million years old. A fossilized footprint of what was described as a 'Jurassic giant', and belonging to a meat eating dinosaur (possibly a
Megalosaurus), was discovered in April 2021. The fossil dates the dinosaur to living around 175 to 164 million years ago.
Spurn Point Spurn is a peninsula that extends southwards from the south eastern edge of
Holderness. It is long and in places is only wide. It is continually being eroded by the sea and also becomes a dumping ground for sand, pebbles and rocks washed down from further up the coast. It was reported in early 2016, that the Associated British Ports control tower on the point is being re-located across the Humber Estuary to Grimsby due to progressive deterioration of the point. ==Industry==