The chalk shore around North Foreland, between Broadstairs and Joss Bay, offers a patient search among fossil-bearing flints and loose chalk. Large flint bands in the cliffs provide a striking record of the Late Cretaceous sea.
FIND FREQUENCY: ♦♦♦ – Modest, variable finds rather than a guaranteed bagful.
CHILDREN: ♦♦♦♦ – Use the main beaches for family visits; remote tidal sections around the headland need experienced judgement.
ACCESS: ♦♦♦♦ – Joss Bay and Broadstairs have established beach access and parking. A full coastal traverse is tide-dependent.
TYPE: – Loose flint pebbles and detached chalk; avoid the cliff toe and leave in-situ rock untouched.
DIRECTIONS
♦ The original northern approach is the pay car park at Joss Bay, south of Kingsgate. Check its seasonal opening and current charges, then use the established beach access.
♦ From Joss Bay, explore south only as far as tide and return conditions allow. Alternatively, use lawful parking and public beach access in Broadstairs, then explore north.
♦ Do not depend on private stairways or cliff tunnels as escape routes. Return to your known public access before the tide closes the shore.
♦ Ref: 51.37390°N, 1.45009°E
FOSSIL HUNTING
North Foreland is best approached as a patient search through loose flint and already detached chalk along the shore between Broadstairs and Joss Bay. The two materials reveal fossils in different ways: flints may carry durable moulds or silicified remains, while chalk preserves shell surfaces and more delicate fragments. Inspect exposed patches of beach rather than expecting every part of the platform to be equally productive. The original field account records echinoids, sponges, shells, small corals and crinoid pieces, but finds are scattered and many are incomplete.
Echinocorys and Micraster are useful starting points for identification. The first generally has a domed or helmet-like test; the second has a heart-shaped outline. Rows of tiny paired pores and the arrangement of plates are better evidence than a suggestively rounded pebble. A flint mould may retain the overall form but little of the original shell surface. In detached chalk, look for a curved test edge or a patch of regular pores showing through the weathered matrix, and keep fragile examples supported in the chalk.
The flint bands provide a framework for understanding where the fossils originated. At North Foreland, the base of Bedwell’s Columnar Flint is associated with concentrations of the conspicuously ribbed bivalve Cladoceramus undulatoplicatus. The chalk between that marker and Whitaker’s Three-inch Flint is an important fossil-bearing interval. Search naturally exposed surfaces of loose pieces from this flinty chalk, but do not assume that a detached columnar flint identifies its original bed: similar shapes occur at more than one level.
Shell fragments are worth a closer look. The original local account records Cordiceramus and Sphenoceramus, both inoceramid bivalves. Broad shell curves and growth folds can be more conspicuous than a complete pair of valves. Keep them with their matrix when possible; an isolated worn fragment need not be identifiable to species. Sponges and small corals should likewise be examined for organised skeletal detail rather than named from a knob or cup-shaped outline alone. Crinoid pieces are disarticulated elements of a sea lily’s skeleton, rather than evidence that a whole crown is hidden in the same stone.
North Foreland also has a documented, much less routine fauna immediately above the base of the Columnar Flint: Sphenoceramus cardissoides, the thin-shelled echinoid Hagenowia rostrata and exceptionally rare early Gonioteuthis belemnites. These published finds give the locality scientific importance; they are not a promise of easy beach specimens. A delicate echinoid fragment or unusual belemnite should be photographed, labelled with its exact finding place and left unprepared pending specialist advice.
Keep the search to loose beach material under the Thanet Fossil Code, without digging, breaking blocks or working on the cliff and platform. Take only a small sample of common finds and report unusual material. Plan a short, reversible route: both sides of Joss Bay are cut off by high tide, so a fossil-bearing stretch is not necessarily a safe through-route.
A chronological record of geological research and significant milestones at North Foreland.
1874 – Columnar flints documented
Bedwell’s work established conspicuous flint bands as practical markers along the Thanet coast. The columnar band is especially useful at North Foreland, where fossils around its base connect the visible rock horizon with Santonian biostratigraphy.
1900 – Named flint markers standardised
Rowe’s published Chalk study named the Columnar and Three-inch flint bands used to correlate the eastern Thanet cliffs. Their distinction remains important when following the changing height of the beds along the North Foreland coast.
1988 – Coastal structure and fossil zones synthesised
The geological memoir integrated the measured coast sections with faults and folds, providing the modern map context for the North Foreland traverse.
References
Shephard-Thorn (1988), Geology of the country around Ramsgate and Dover, sheets 274 and 290
Thanet Coast Project, Fossil Code
Hubbard (2021), Thanet anticline’s shifting shorelines: Two millennia of change
Trevelyan (2021), The Smugglers Trail book review
Thanet Coast Project, Nature designations
Mortimore, Wood & Gallois (2001), Thanet Coast, GCR 23
Thanet District Council, Joss Bay access
BGS Lexicon, Margate Chalk Member
Natural History Museum, What is a fossil? specimen fragility and pyrite decay
Thanet District Council, current car park charges
GEOLOGY
Between Broadstairs and Joss Bay, North Foreland is chiefly a section through the Seaford Chalk Formation. Soft white limestone is crossed by repeated nodular and tabular flint bands, a conspicuous contrast to the flint-poor Margate Chalk farther around Thanet. The chalk accumulated as carbonate-rich marine sediment during the Late Cretaceous. Flint developed within it after deposition, preserving some of the burrow patterns made by animals in the sea-floor sediment as well as providing durable markers through the cliffs.
Bedwell’s Columnar Flint Band is one of the most recognisable horizons. Its nodules have striking vertical extensions, locally forming large columnar paramoudras, and the base is associated with a concentration of the ribbed bivalve Cladoceramus undulatoplicatus. Just above the base at the foot of North Foreland, published collections record Sphenoceramus cardissoides, the delicate echinoid Hagenowia rostrata and exceptionally rare early Gonioteuthis belemnites. These associations give the band a palaeontological identity as well as a distinctive appearance.
Higher up, Whitaker’s Three-inch Flint is a sheet-like marker formed around a horizontal Thalassinoides burrow system. It contrasts with the separated nodules and finger-like flints of the intervening chalk and can be followed at the Joss Bay end of the traverse. Changes in a marker’s height along the cliff reflect geological structure as well as the shape of the coastline; faulting can displace the sequence. The chalk above leads towards Barrois’ Sponge Bed and the transition into Margate Chalk, with the fuller lower Margate reference section continuing beyond Joss Bay towards White Ness.
The flints also influence the material encountered on the beach. Erosion removes the softer chalk and leaves resistant nodules among the shore deposits, some preserving echinoid moulds or sponges. Detached chalk supplies a different view of the fauna, including shell fragments and more fragile fossil remains. Transport and abrasion can mix and wear both materials, so an isolated columnar flint or rolled fossil rarely retains enough context to assign it confidently to a named band. The continuous markers in the cliff provide the geological framework for interpreting those loose finds.
Detailed geology and stratigraphy of North Foreland.
CHALK GROUP
The white rock is a marine limestone accumulated from carbonate-rich sediment during the Late Cretaceous. Flint formed within the sediment after deposition rather than being a layer of lava.
WHITE CHALK SUBGROUP
The local succession belongs to the flinty and flint-poor white chalks traditionally included in the Upper Chalk. Formation boundaries are based on rock character, whereas the zones used in many older accounts are based on fossils.
Seaford Chalk Formation
Soft white chalk contains repeated nodular and tabular flint layers. In the Thanet sections the older name Broadstairs Chalk largely corresponds to this formation; it is not an additional overlying unit. The flints provide conspicuous markers, but faulting can repeat or remove portions of a cliff section.
Columnar Flint basal fauna at North Foreland
Just above the base of Bedwell’s Columnar Flint at the foot of North Foreland, published collections include Sphenoceramus cardissoides, the delicate echinoid Hagenowia rostrata and exceptionally rare early Gonioteuthis belemnites. These site-specific records are scientifically useful, but their mention does not authorise extraction from the cliff.
Bedwell’s Columnar Flint Band
This marker comprises nodular flints with striking vertical extensions and locally large columnar paramoudras. The band’s base coincides with a strong concentration of the ribbed bivalve Cladoceramus undulatoplicatus.
Chalk between the Columnar and Three-inch flints
The Thanet composite section contains about 12 m of chalk between the two major flint markers, with 13 intervening flint bands, many comprising finger-like Zoophycos flints. This is a section-scale correlation interval, not a measured thickness for every individual bay. Several shell concentrations occur above the Columnar Flint, including a higher Cladoceramus/Platyceramus bed.
Whitaker’s Three-inch Flint Band
A conspicuous sheet-like flint contrasts with the separated nodules below. Its morphology reflects silica replacement around a horizontal Thalassinoides burrow system. It is a useful correlation marker with a historical name; its thickness varies.
Three-inch Flint at Joss Bay
At the northern end of the traverse, Whitaker’s marker is accessible to observation at the head of Joss Bay. It helps establish the position of the chalk above the richer lower Santonian beds. Shifts in its height along the cliff reflect structure as well as coastline shape.
Chalk above the Three-inch Flint
The interval to Barrois’ Sponge Bed is about 6 m in the published Thanet composite and includes discontinuous nodular flints. A minor surface about 2 m below the sponge bed marks the arrival of Actinocamax verus and the highest local records of Gibbithyris; thick-shelled Platyceramus occurs above this surface. These are fossil events and horizons within a formation, not members.
Barrois’ Sponge Bed at the Joss Bay end
The higher Seaford marker was traced historically from Joss Bay towards White Ness. It marks the transition to the flint-poor Margate Chalk beyond and above the main flinty North Foreland succession. The more complete lower Margate Chalk reference succession continues beyond Joss Bay towards White Ness.
References
Shephard-Thorn (1988), Geology of the country around Ramsgate and Dover, sheets 274 and 290
Mortimore, Wood & Gallois (2001), Thanet Coast, GCR 23
BGS Lexicon, Margate Chalk Member
SAFETY
Headlands and rising water can cut off the beach. Check tides, weather and your exit before leaving either main bay.
Keep away from cliffs, avoid weed-covered platforms and do not climb boulder falls. A beach that is straightforward near an access point can become isolated farther along.
EQUIPMENT
Wear sturdy footwear with a strong grip and carry a small bag, individual padding, labels and a hand lens. Bring suitable clothing, drinking water and a charged phone.
For a beachcombing visit, leave hammers, chisels and digging tools at home. Do not carry heavy rocks or overfill a bag on slippery ground.
CLEANING AND TREATING
Keep a label with the exact locality, date and, where known, the bed. Pack each chalk fossil separately with padding and support fragile shells with their surrounding matrix. Begin with a soft dry brush after gradual room-temperature drying; do not force chalk away from thin echinoid tests or crinoid plates. Avoid acids, bleach and routine varnish. Flint specimens are best retained as naturally weathered finds, rather than struck to chase a fossil into the nodule. Leave unusual or potentially important specimens unprepared for specialist assessment.
IDENTIFY YOUR FINDS
Need help identifying a fossil? Share clear photos, where you found it and its size with the community.
FURTHER READING
Hubbard (2021), Thanet anticline’s shifting shorelines: Two millennia of change
Trevelyan (2021), The Smugglers Trail book review
Mortimore, Wood & Gallois (2001), Thanet Coast, GCR 23
Shephard-Thorn (1988), Geology of the country around Ramsgate and Dover, sheets 274 and 290
Thanet District Council, Joss Bay access
Thanet District Council, current car park charges
Thanet Coast Project, Fossil Code
ACCESS RIGHTS
Follow the Thanet Fossil Code: beachcomb for a small number of common loose fossils, leave the cliff and shore platform intact, and avoid digging or using tools. Keep away from cliff bases and freshly fallen material while further falls remain possible. Record the precise position of unusual finds and report them. Landowner permission remains necessary on privately owned parts of the shore. The voluntary collecting code and the site’s statutory nature-conservation designations are distinct.
It is important to follow our ‘Code of Conduct’ when collecting fossils or visiting any site. Please also read our ‘Terms and Conditions’.
LINKS
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