The rocky shore from East Sands to Maiden Rock reveals Carboniferous plant remains, ripple-marked sandstone and sharply folded beds. Look for fossil roots and plant fragments among the weathered surfaces, with less conspicuous shell-bearing mudstones recording occasional marine incursions. This protected, tidal shore rewards careful observation and photography.
FIND FREQUENCY: ♦♦♦ – Plant fragments and Stigmaria are the most familiar finds; shell-rich stones are less common.
CHILDREN: ♦♦ – East Sands is a visitor beach, but the rocky fossil shore needs close supervision, sound footing and careful tide planning.
ACCESS: ♦♦♦ – Approach from East Sands; beyond the sand there are uneven, slippery reefs and unstable coastal slopes.
TYPE: Carboniferous cliffs and foreshore. Observe fossils in exposed surfaces and loose stones; establish permission and any required consent before removal.
DIRECTIONS
♦ From the A917 (St Mary’s Street), turn towards East Sands into Woodburn Place and use the signed parking serving the beach.
♦ Walk south along or behind East Sands towards the leisure centre and the point where the sandy beach gives way to rocky, tilted strata.
♦ Explore only as far as conditions allow towards Maiden Rock, the sandstone stack above the shore. Return by the same safe route before the tide closes it; this guide does not cover the longer Rock and Spindle excursion.
♦ Original approach reference: 56.33621°N, 2.78197°W. Check current parking signs and coastal-path notices before setting out.
FOSSIL HUNTING
Plant fossils are the most accessible feature of this short shore. Sandstone surfaces and naturally weathered loose blocks show dark plant scraps, impressions and larger rooting structures. Scan exposed bedding planes with the light falling obliquely across them: relief and scars are often easier to see than on a wet, strongly reflective surface. The photographs show plant-bearing sandstone, a small plant impression and Stigmaria. They illustrate material found here without establishing an exact bed for each photograph.
Stigmaria is the name given to the rooting organs of Carboniferous tree-sized clubmosses. Repeated rounded rootlet scars are a useful recognition feature, rather than the regular parallel ridges of ripple-marked sandstone. Broken surfaces may show only part of the pattern. The shore also contains fragmented stems and other plant remains that cannot reliably be identified to species from a small weathered scrap. Some large plant material described from this coast was carried by water and buried in sand, so a root or trunk is not automatically preserved where the tree grew.
Marine fossils belong to particular mudstone horizons rather than every sandstone ridge. The St Nicholas Marine Band has recorded brachiopods including Echinoconchus punctatus and Lingula, bivalves and the net-like bryozoan Fenestella. Ironstone nodules occur in its fossiliferous mudstone, sometimes with evidence of burrowing. These published records explain what the finer beds can contain; they are not a promise of abundant loose specimens on a visit. Examine already exposed surfaces with a hand lens and record their position without breaking into the bed.
A separate mudstone horizon about 30 m above the St Nicholas Marine Band has yielded the non-marine bivalve Curvirimula scotica. That figure describes its position in the succession, not the thickness of a shell bed or a distance to walk along the beach. Uncommon reddish cobbles packed with bivalve remains have also been recorded here. A rounded beach stone has lost its precise bed context, so colour and shell abundance alone cannot identify its species or assign it to either marine band.
Burrows and trails add another kind of fossil evidence. The local teaching guide records Chondrites in ironstone nodules and plant-bearing sandstone fragments around the landslip area. These observations do not make the unstable slope or its toe a safe search area. Photograph accessible material from stable ground, leave embedded fossils intact and retain a note of the rock type and location. An unusual or scientifically important find is best recorded in place and referred for specialist advice before any attempt at removal.
A chronological record of geological research and conservation milestones on the East Sands–Maiden Rock shore.
1920 – Small volcanic bodies described
David Balsillie described small volcanic vents near St Andrews, including occurrences associated with the faulted shore west of Maiden Rock. Later geological field guides retained these observations, helping distinguish minor, often concealed igneous features from the surrounding sedimentary rocks.
1971 – The coast receives SSSI protection
The coast was first notified as St Andrews–Buddo Ness Site of Special Scientific Interest. Protection recognised a coastal section important for its Carboniferous rocks and natural habitats, encompassing the rocky shore beyond East Sands.
1977 – St Nicholas Marine Band documented
I. H. Forsyth and J. I. Chisholm named the St Nicholas Marine Band and published its measured local section and marine fauna. They also recorded a higher mudstone with non-marine Curvirimula, while explaining the faulting and uncertainty affecting correlation of the East Sands–Maiden Rock rocks.
1982 onwards – Landslip movement documented
The coastal landslip west of Maiden Rock was described in a later field guide as moving slowly since 1982. Its sandstone blocks and soft shale illustrated the interaction of slope failure and marine erosion, an important part of understanding the present exposure and its hazards.
1989 – Protected site enlarged
On 14 February the SSSI was re-notified with an increase of 48.01 hectares. The enlargement extended protection across the wider coast.
2004 – Regional significance reassessed
A national geological review placed the East Sands exposures within the wider East Sands–Buddo Ness section. It emphasised the thinner, sandier northern development of the Strathclyde Group and assigned the local section to the Asbian by correlation, highlighting its value for reconstructing Carboniferous environments.
2009 – The short shore documented for field teaching
A dated educational guide illustrated the plant-bearing beds near East Sands, the landslip and the Maiden Rock fold and fault. Its photographs and named stops provide a useful record of the features on this short walk, including transported plant material and changing shore exposure.
2011 – SSSI notification reviewed
The notification for St Andrews–Craig Hartle SSSI was reviewed on 25 March. The protected interest includes Lower Carboniferous stratigraphy alongside coastal habitats; designation and review do not themselves grant permission to remove fossils.
GEOLOGY
The rocks on this walk belong to the Strathclyde Group of the Carboniferous. The local section is assigned to the Asbian, a subdivision of the late Viséan, in the Geological Conservation Review account. Most of the disturbed shore between southern East Sands and Maiden Rock is assigned to the Sandy Craig Formation, formerly called the Sandy Craig Beds. Its formal formation-wide range extends from Asbian to Brigantian, but that broader range does not demonstrate Brigantian beds on this walk.
Sand, silt and mud accumulated in a landscape influenced by rivers, deltas and shallow non-marine water. Plant debris was carried into the sediment; ripple marks preserve the movement of water over sandy surfaces. Soil-forming intervals produced mottled, locally dolomitic material. Short-lived marine incursions introduced shelly animals and bryozoans, leaving contrasting fossiliferous mudstones such as the St Nicholas Marine Band. The alternation of harder sandstone and softer mudstone now helps form the ridges and gullies of the foreshore.
Faults interrupt the succession and the beds become sharply folded near Maiden Rock. Walking east is therefore not a simple journey upwards through younger rocks. The immediate Maiden Rock fault-zone brings the Pittenweem Formation and the Witch Lake Marine Band into the local picture. Pittenweem is the older formation: in the formal succession Sandy Craig overlies it, with their boundary defined at the top of the St Andrews Castle Marine Band. That regional boundary definition should not be mistaken for a continuously exposed contact on this short route.
Maiden Rock itself is a remnant sandstone sea stack left above the modern shore on a raised beach. Its steep bedding and the adjoining folded ridges show how deformation and erosion combine to shape the coast. Small, commonly obscured volcanic bodies have been described in the faulted shore west of the stack, but the conspicuous Rock and Spindle volcanic complex lies beyond this guide. Loose modern beach stones and landslip debris are displaced material, separate from the bedrock succession, and may conceal or reveal different surfaces as conditions change.
A closer look at the rocks and fossil-bearing beds at St Andrews, from southern East Sands to Maiden Rock.
This account covers the faulted shore from southern East Sands to Maiden Rock and its immediately adjoining fold. It is not a complete log of the much longer East Sands–Buddo Ness section. The local rocks are assigned to the Asbian by correlation in the Geological Conservation Review account. No formal member subdivision is established for this short walk.
STRATHCLYDE GROUP
The local succession is dominated by sandstone, with siltstone, mudstone, shale and dolomitic material. Plant remains and sedimentary structures record river and shallow-water deposition, while distinctive marine mudstones interrupt the predominantly non-marine succession. Relative to the equivalent southern Fife sections, the broader St Andrews coastal succession is thinner and sandier, with fewer marine intervals. Its folds and faults repeat and interrupt individual beds.
Sandy Craig Formation
Formation assignment and boundaries. The 1977 survey assigned the disturbed East Sands–Maiden Rock rocks to the Sandy Craig Beds on facies grounds; its fossil-locality index retains a question mark against that assignment. The modern name is Sandy Craig Formation. Its formation-wide age range is Asbian–Brigantian, whereas the local coastal section is treated as Asbian in the GCR synthesis. In the formal succession the base is the top of the St Andrews Castle Marine Band, above the Pittenweem Formation, and the top is the base of the West Braes Marine Band. These are regional definitions, not two contacts demonstrated along this short walk.
Plant-bearing sandstone and siltstone near East Sands. The first rocky exposures east of the beach include deltaic sandstone and, farther along the cliff base, interbedded sandstone, siltstone and mudstone. Ripple marks and plant impressions occur on bedding surfaces and in fallen blocks. The local educational account describes a large transported trunk lying within the bedding, about 400 m east of the point where the cliff begins to rise; shingle may hide it. Detached roots, trunks and plant fragments do not necessarily mark the original position of a standing forest. Glacially transported igneous and metamorphic stones occur among the loose material and are not beds within the formation.
Nodular dolomitic interval (3 m). A prominent unbedded band of mudstone and sandstone contains dolomitic concretions with mottled, “catsbrain” texture. It can be traced east along the cliffs to a small fault at NO 5222 1582. The survey considered the beds west of this fault probably lower than those to the east, but did not demonstrate an uninterrupted connection. This measured 3 m interval must therefore remain separate from the measured St Nicholas section.
St Nicholas Marine Band: exposure and local section. The band occurs among sandstone, shale and mudstone east of the small fault. The survey recorded outcrops low on the foreshore at NO 5243 1600 and NO 5258 1591, and a separate small faulted block nearer high-water mark at NO 5231 1590. The six units below describe that last block in upward order. They form a measured local section around the marine band, not a member or the full thickness of the formation; tide, shingle and weathering affect what is visible.
Lower sandstone (7.6 m). Sandstone forms the lowest unit in the published local section. The measurement applies to this faulted block. No detailed fossil content is assigned to it in the measured description.
Barren shale (0.15 m). A thin shale rests above the lower sandstone and below the Lingula-bearing mudstone. “Barren” is the survey’s observation for this measured bed, not a claim that all shale on the coast lacks fossils.
Lingula-bearing mudstone (0.05 m). This very thin fossiliferous mudstone overlies the barren shale. Its 5 cm thickness is a bed measurement, separate from the much thicker nodular mudstone above.
Fossiliferous nodular mudstone (1.5 m). Mudstone with ironstone nodules contains brachiopods, molluscs and Fenestella; some nodules are bioturbated. This is the main fossiliferous mudstone in the local measured description. The marine assemblage contrasts with the plant-bearing sandstone and with the higher non-marine bivalve horizon.
Laminated sandy mudstone (1.1 m). Mudstone containing sandstone laminae succeeds the nodular fossiliferous unit. The sandy layers record a change in sediment character; no separate marine-band or member name is established for this bed.
Upper sandstone (3.1 m). Sandstone caps the measured six-unit section. It is the highest bed in that local table, not a formation boundary. The published section is not a continuous link to the higher Curvirimula horizon.
Recorded St Nicholas marine fauna. The survey records Echinoconchus punctatus, Lingula mytilloides, L. squamiformis, orthotetoid brachiopods, Productus sp. and a doubtful Spirifer, together with Fenestella and other bryozoans. Bivalves include Aviculopecten subconoideus?, A. aff. interstitialis, Leiopteria sp., Limipecten cf. dissimilis, Lithophaga lingualis and Streblochondria sp. These are published historical identifications with their qualifications retained, not new identifications of the photographs. An uncertain sponge and indeterminate coral are also reported. The wider locality index records ostracods, crinoid fragments and fish fragments from the St Nicholas shore localities, which include the band and beds above it; their precise positions within the local succession are not all established.
Higher Curvirimula mudstone. A prominent mudstone forms an open gully among the sandstone reefs at NO 5243 1589, approximately 30 m above the St Nicholas Marine Band. It has yielded Curvirimula, with C. scotica recorded in the locality index. The 30 m value is stratigraphic separation, not the mudstone’s thickness. Its non-marine bivalves belong to a different environmental interval from the marine-band fauna. Similarities of fauna and stratigraphic position suggest that the St Nicholas Marine Band may correlate with the New Mill Marine Band inland.
Pittenweem Formation: immediate Maiden Rock fault-zone context
Older strata beside the fault. The Pittenweem Formation is Asbian and lies below the Sandy Craig Formation in the formal stratigraphy. At the immediate eastern edge of this walk, faulting and folding bring its sandstone-rich local succession into view. This is a structural juxtaposition, not a younger formation lying above Sandy Craig. The regional base is the base of the Cuniger Rock Marine Band and the top is the top of the St Andrews Castle Marine Band; neither definition supplies a complete measured Pittenweem log at Maiden Rock.
Witch Lake Marine Band. This marine horizon reappears at and just beyond Maiden Rock; the memoir gives an outcrop at NO 5265 1580, and the field guide describes a poorly exposed continuation a few metres west of the stack, marked near high-water level by a sand- and boulder-filled trench. Strata above it occupy the adjoining Maiden Rock Syncline. The band is historically known as the Encrinite Bed in the wider coastal succession. The detailed measured sections farther east at the Saddleback Anticline describe a different exposure.
Maiden Rock Syncline and faulting. The sandstone ridges beside the stack curve through a tight fold. The field guide describes a steep to overturned western limb and a NE–SW fault cutting off the fold to the north-west. Farther west, smaller folds and faults interrupt the generally southward-dipping Sandy Craig rocks. Resistant sandstone forms ridges while softer shale and shattered fault-zone rock are preferentially eroded into trenches. Different published measurements describe different positions on these structures, so a single dip cannot characterise the whole shore.
Sandstone and shale in the western syncline. Farther west along this same shore, a separate tight syncline contains thick trough-cross-bedded sandstone above grey shale with ironstone nodules, with another thick sandstone sequence below. Preferential erosion of the softer shale makes the fold easier to see. Small faults cut the more rigid sandstone, while the shale has bent around it. This is an unmeasured structural exposure, separate from the six-bed St Nicholas log described above.
Minor igneous features and younger coastal deposits. Small masses of tuff and altered basalt have been described among the faults west of Maiden Rock, often obscured by beach material. They should not be confused with the larger volcanic complexes farther east. Maiden Rock is an erosional remnant of steeply bedded sandstone on a raised beach, rather than a volcanic plug. Modern shingle, glacial erratics and landslip debris overlie or cover parts of the shore and must be distinguished from the Carboniferous succession. At the documented landslip near NO 5246 1582, sandstone fragments and plants occur within soft muddy debris; Chondrites is recorded in ironstone nodules.
References
Forsyth, I. H. and Chisholm, J. I. (1977), The geology of east Fife, especially the East Sands–Maiden Rock coast section, marine faunas and Appendix 1 localities 128–129.
British Geological Survey, Lexicon entries for the Sandy Craig Formation and Pittenweem Formation.
MacGregor, A. R. (1996), Kinkell Braes, St Andrews, in Fife and Angus Geology, third edition, especially localities 8–10.
Cossey and colleagues (2004), British Lower Carboniferous Stratigraphy, Geological Conservation Review 29, East Sands–Buddo Ness, pp. 34–35.
Scottish Earth Science Education Forum (2009), St Andrews: Teachers’ Guide, Higher & Intermediate 2 Geology, localities 1–3.
SAFETY
Plan the rocky-shore visit around a suitable low tide, arrive while the tide is falling and allow ample time to return before it rises. Gullies and projecting reefs can obstruct the return route, and waves or onshore winds can reduce the available shore. Check a current local tide forecast and weather conditions; turn back if a safe route is doubtful.
The sandstone ledges can be slippery with algae, while loose cobbles shift underfoot. Keep away from cliff bases, overhangs and fresh falls. The slopes include a documented landslip with sandstone blocks in soft muddy material; do not enter its toe, climb the stack or scramble across unstable debris. The accessible sandy beach should not be taken as evidence that the rocky section is suitable for every child or visitor.
Wear footwear with good grip, carry a charged phone and let someone know your route and return time. Follow current on-site signs and coastal-path diversions. Stay on established approaches and avoid trampling the protected coastal vegetation.
EQUIPMENT
A hand lens, camera, notebook and small scale are useful for studying and recording fossils without disturbing them. Carry tide information, weatherproof clothing and sturdy footwear. A geological hammer is unnecessary for an observational visit and should not be used to split foreshore blocks or attack exposures without the relevant permission and consent.
CLEANING AND TREATING
For a specimen that has been lawfully collected, record its location and rock type before cleaning. Begin with gentle dry brushing once it has dried slowly at room temperature. Plant films and impressions can be very thin, and flaky mudstone or shale may disintegrate if soaked; avoid scrubbing, prolonged soaking and pressure washing.
Do not use acids, bleach or routine varnish. Ironstone and hard sandstone may be difficult to remove without damaging the fossil, so leave firmly attached matrix in place unless a specialist can advise. Keep an unusual specimen unprepared, with its context and any associated fragments, until it has been assessed.
IDENTIFY YOUR FINDS
Need help identifying a fossil? Share clear photos, where you found it and its size with the community.
FURTHER READING
BGS: The geology of east Fife (East Sands–Maiden Rock section)
Kinkell Braes field excursion (a longer route; see Maiden Rock and East Sands stops)
St Andrews geology teachers’ guide (localities 1–3 cover this walk)
GCR: East Sands–Buddo Ness, regional geological context
St Andrews–Craig Hartle SSSI: official site information
ACCESS RIGHTS
The rocky coast towards Maiden Rock lies within St Andrews–Craig Hartle SSSI. Its geological exposures and coastal habitats are protected. Responsible walking access does not itself grant permission to remove fossils or rock. Establish landowner or mineral-rights permission and clarify any NatureScot consent needed before collecting.
Leave bedrock, embedded fossils and protected vegetation undisturbed. Do not assume that loose blocks are unrestricted simply because they have fallen or washed onto the beach. Read and follow the Scottish Fossil Code, including its guidance on recording and reporting important finds.
It is important to follow our ‘Code of Conduct’ when collecting fossils or visiting any site. Please also read our ‘Terms and Conditions‘
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