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London Geodiversity Partnership

@londongeology.bsky.social

600 followers 220 following 82 posts

Preserving and communicating the geology of London. Sharing good practice, influencing policy and establishing cross-London working for Geodiversity

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London Geodiversity Partnership @londongeology.bsky.social · Apr 8

If you like this account please do give it a share! We are really struggling to get engagement on this platform. London’s geology is more varied than you think and we are here to spread the word, look after and promote London’s geosites #londongeology

A series of photos from Gilbert’s Pit in Charlton. A pair of hands holds a slab of the Woolwich Shell Bed, an iron oxide rich clay packed with white fossil shells

A series of photos from Gilbert’s Pit in Charlton. The Blackheath Beds, pavked with well rounded, black flint pebbles forms the top of the section at Gilbert’s Pit

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Reposted by London Geodiversity Partnership

Ruth Siddall @pavementgeology.bsky.social · 15d

My final #urbangeology walk for this year will take place on 4 October. Reservations and more information on #LondonWalks website at www.walks.com/our-walks/th.... Hope to see you there, this is my favourite walk!

Poster for the walk. The text reads ‘discover fossils, stone and astronomy in the city of London! The Monument, the Moon and Malta: urban geology on Eastcheap. Meet at 14.30, Monument Station, Fish Street Hill.’ The background image shows a photo of the Malta War Memorial, a block of squared stone with attached black plaques with maps of the Mediterranean and a description of the siege of Malta during World War II.

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London Geodiversity Partnership @londongeology.bsky.social · 17d

Some photos from yesterday’s guided walk to Hainault Forest Park #londongeology #hainaultforest #walklondon

A group of people looking at the London Clay and superficial deposits around the Lake at Hainault Forest Park

The walking group at the meeting place outside the visitor centre at Hainault Forest Park.

London Geodiversity Partnership @londongeology.bsky.social · 24d

Another busy weekend! LGP’s stand at Abbey Woods Woodland Festival. Open until 4 pm, come and learn about #londongeology

A man and a child are visiting our stall which has a display of fossils and other information about London’s geology.

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London Geodiversity Partnership @londongeology.bsky.social · Sep 7

Come and visit our stall at the Highgate Wood Community Heritage Day today and learn about the geology of the woods and London. More information at
www.cityoflondon.gov.uk/events/commu...
#londongeology #highgatewoods

Members of London Geodiversity Partnership running today’s stall at Highgate Woods this morning

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Reposted by London Geodiversity Partnership

Ruth Siddall @pavementgeology.bsky.social · Sep 3

Ordovician Orthoceratite Limestone from Öland in the orangery at Hampton Court Palace. Large orthoceras fossils #urbangeology

Chequerboard slabs of Öland Limestone with large orthoceras fossils. The slabs are ~ 30x30 cm. My foot is in the photo for scale

Chequerboard slabs of Öland Limestone with large orthoceras fossils. The slabs are ~ 30x30 cm.

A view of the red and grey limestone chequer board paving in the orangery at Hampton Court Palace.

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London Geodiversity Partnership @londongeology.bsky.social · Aug 31

Four million tons of London Clay moved in HS2 excavation www.bbc.com/news/article...

HS2: West London tunnel section completed with 'huge' machines

Engineers have begun the process of lifting the machines used on the project to the surface.

www.bbc.com

London Geodiversity Partnership @londongeology.bsky.social · Aug 29

Here’s the info for our free, guided walk to Hainault Forest Park with #LondonNaturalHistorySociety on 20 September. Please register at the email in the flyer (or alt text) if you want to join us
#londongeology

Geotrail around Hainault Forest Country Park
20 September 2025 Start at 11am
Guided jointly by the London Geodiversity Partnership and London Natural History Society
Romford Road, Chigwell, IG7 4QN

Meet: Global Cafe [TQ 4767 9264) opposite first car park, or by bus from Romford or Grange Hill stations
(all details will sent to those booking).

Hainault Forest Country Park is a public park that shows the geomorphology of the underlying geology – largely the Claygate Member capping the London Clay. We shall also see the Bagshot Formation and some till, with head in the valley. They all have distinctive features that affect the
geomorphology and the flora and fauna of the area.

The Lake and the visitor centre are between 50m and 60m with Cabin Hill (c90m) to the north and Dog Kennel Hill (c80m) to the south. There is evidence of the Anglian glaciation with the deposit of sandy and clayey till with chalk and flint.
Hainault Forest is a Metropolitan SINC (Site of Importance for Nature Conservation), which is a fine example of old wood pasture and ancient woodland. It is also a SSSI that extends into Essex.
The Country Park is a Borough SINC and both areas share similar species of rare birds, rare invertebrates and locally uncommon plants.

The walk is free but please register with the London Geodiversity Partnership at

geotrail@londongeopartnership.org.uk

Further details and a Risk Assessment will be sent nearer the time

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London Geodiversity Partnership @londongeology.bsky.social · Aug 27

A recce for our free public walk for #EarthScienceWeek looking at the landscape and geology of Hainault Forest Park. The walk will take place on 20th September - watch this space for more info! #londongeology

People walking up a hill, away from the Hainault Forest Park visitor centre, which is in the background of the photo.

Fallen trees in a dry stream bed. Upturned trees can reveal the underlying geology in their root balls.

A photo of a forest with a meandering stream cutting through it.

People walking towards the photographer along a gravel path in parkland.

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Reposted by London Geodiversity Partnership

The Thompsonian @thethompsonian.bsky.social · Aug 19

Very inspiring indeed!

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London Geodiversity Partnership @londongeology.bsky.social · Aug 20

Great photo! 😂🦢

Reposted by London Geodiversity Partnership

Naomi in the lanes @naomiinthelanes.bsky.social · Aug 19

Blogged: Grove Whitbed, #PortlandStone, full of oysters.

#Geology #UrbanGeology #UrbanFossils #Jurassic

shutterbugofstone.blogspot.com/2025/08/rock...

Rock bang full of oysters

A Shutterbug of Stone

shutterbugofstone.blogspot.com

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London Geodiversity Partnership @londongeology.bsky.social · Aug 16

A couple of photos from our walk today for #inspirallondon led by myself & fellow LGP member @gaildickerson.bsky.social. The walk - Rivers, Reservoirs, Ice &Sea - looked at the geology and colours in the landscape in East London. We walked from Forest Gate E7 to Wood Street E17 #londongeology

Starting the walk on Wanstead Flats - the photo shows a view looking north, our direction of travel, with a gravel path heading towards woodland in the distance

The monolithic twin tower blocks on Leyton Flats

Looking at swatches of colours made from earths and oak galls at the end of the walk

A close up of the colour swatches mainly showing the ones made by Gail and representing the geology of the London basin

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Reposted by London Geodiversity Partnership

Ruth Siddall @pavementgeology.bsky.social · Aug 11

Next Saturday I’m doing a walk with #InspiralLondon and artist @gaildickerson.bsky.social; Rivers, Reservoirs, Ice and Sea. More info and booking details in the link below www.inspirallondon.com/event/rivers...

Poster for the walk - the link above contains all the details shown in the text here.

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Reposted by London Geodiversity Partnership

The Geologists' Association @geolassoc.bsky.social · Jul 2

Our colleagues at the Geologists' Association club for junior geologists: @rockwatch.bsky.social currently have a vacancy for a volunteer Fieldtrip Manager.

If you are interested helping to inspire the next generation of junior geologists email [email protected] for more details.

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London Geodiversity Partnership @londongeology.bsky.social · Jul 2

There are a surprising number of fossil trees hidden in London and the small fossil forest at Regent’s Park is one of our London Sites of Geological Interest (#SGI). Check them out in the list below

Ruth Siddall @pavementgeology.bsky.social · Jul 2

An update to my gazetteer of displaced fossil trees in the UK. I'm going to be talking about this project at the Workshop on #HeritageStone in Dublin in a couple of weeks, so have a look and let me know of any additions or if you have a photo to add ruthsiddall.co.uk/Walks/Britai... #urbangeology

A fossil tree used as a monument on the grave of Alfred Russel Wallace in Poole

The fossil tree stump in Stanhope churchyard.

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London Geodiversity Partnership @londongeology.bsky.social · Jun 27

I know the feeling!

London Geodiversity Partnership @londongeology.bsky.social · Jun 27

Yeah … or maybe even a giraffe. It’s tacky

London Geodiversity Partnership @londongeology.bsky.social · Jun 27

Paternoster Square was once a really nice piazza in the City of London. Today it’s full of clutter, sheds and poor quality public art #walklondon

A view of Paternoster Square ruined by sheds, stalls and unattractive tv system and naff sculptures

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Reposted by London Geodiversity Partnership

Germander Speedwell @germanderspeedwell.bsky.social · Jun 12

The London Museum recently asked me to write about clay pipes for their online blog linked to their exhibition 'Secrets of the Thames'. Read about how I first started pipe-larking, and see some of my favourite photos:
www.londonmuseum.org.uk/blog/mudlarking-clay-tobacco-pipes-thames-foreshore

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Reposted by London Geodiversity Partnership

Ruth Siddall @pavementgeology.bsky.social · Jun 16

I recently read Smith & Martill’s paper on pterosaur fossils in Portland Stone. Here’s a bone fragment I found in PS in London and its porosity + thin outer layer have always made me wonder if it could be a pterosaur. Any ideas @nataliajagielska.bsky.social & other palaeo bone folk? #urbangeology

Overview of the bone fragment which appears brown in colour. It is in Portland Jordans Whitbed.

Close up of the same bone fragment with my fingers for scale. It has a porous, honeycomb texture. Other fossil fragments present are rolled Solenopora algae and oyster shell fragments.

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Reposted by London Geodiversity Partnership

Ruth Siddall @pavementgeology.bsky.social · Jun 11

On Saturday! A few places left for an #urbangeology walk in Regent’s Place and Fitzrovia, 14 June from 2-4 pm. This walk is in collaboration with the exhibition ‘The Geological Unconscious’ at Hypha Gallery, Regent’s Place. Booking www.eventbrite.co.uk/e/urban-geol...

Poster for the wall containing the information in the text above

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London Geodiversity Partnership @londongeology.bsky.social · Jun 8

Portland Stone is used for buildings all over London. You can spot these fossils on London’s buildings #urbangeology #portlandstone

Ruth Siddall @pavementgeology.bsky.social · Jun 8

The quarry men on the Isle of Portland call the casts and moulds of the fossil bivalve Trigonia ‘osses ‘eads (horses’ heads). This is why
#portlandstone #whitbed

A cut block of Portland Stone with a fossil protruding out from the surface. The original shell material has leached away leaving only the external cast and the internal mould. The mould resembles a horse head with ears and a snout. Portland Stone is a white, fine grained, oolitic limestone.

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London Geodiversity Partnership @londongeology.bsky.social · Jun 2

A few photos from our recent field trip along the River Ravensbourne looking at the results of cleaning and naturalising the river and flood management #riversoflondon #lonfonrivers #londongeology

The team standing on a bridge over the river

A white egret - wildlife is thriving on the river

Artist Gail Dickerson describes her work to the group whilst standing on the riverbank

A view of the confluence of the Pool and the Ravensbourne

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Premier Construction & Rail @premierconstructionnews.com · May 29

Premier #Construction - Tideway has announced the successful activation of the new super sewer.

After ten years of construction the last of 21 connections has been made between the original Victorian sewers and the new 25km…

https://premierconstructionnews.com/2025/05/29/thames-tideway-tunnel-2/

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Reposted by London Geodiversity Partnership

Peter Stone @londonstone.bsky.social · May 29

Take a train between Wapping and Rotherhithe stations and you are travelling under the Thames on the world's first (now oldest) tunnel under a river. Constructed by Isambard Kingdom Brunel and father Marc. Originally opened for pedestrians in 1843 and for railway in the 1860s.

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