Ruth Siddall
@pavementgeology.bsky.social
What is your city built from? This account is all about building stones and accessible geology in the built environment. londonpavementgeology.co.uk
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Ruth Siddall
@pavementgeology.bsky.social
· Nov 14
Hello and welcome to our new followers! 🙌 we are all about the geology of building stones and host the LondonPavementGeology.co.uk website which archives building stone data for the UK. Please check it out, and you can also submit locations near you
Reposted by Ruth Siddall
Artists! Is your studio haunted by the bowels if a stallion? A short news item from a 1930s edition of the magazine ‘The Artist’ #ghosts
November 10, 2025 at 2:33 PM
Artists! Is your studio haunted by the bowels if a stallion? A short news item from a 1930s edition of the magazine ‘The Artist’ #ghosts
Reposted by Ruth Siddall
Furiously finalising my campaign so I can press "launch". One last chance to sign up for first dibs (the limited rewards are very limited); the next reminder will be once the campaign is already live!
Is there anyone on Bsky who remembers this book? It's been out of print for a while, because it needs revising in the light of 5 more years of research & experience (including a proper translation of Umdat ul-Kuttab). Being unpaid work, I've simply not been able to prioritise this, so I've decided…
November 10, 2025 at 12:27 PM
Furiously finalising my campaign so I can press "launch". One last chance to sign up for first dibs (the limited rewards are very limited); the next reminder will be once the campaign is already live!
Artists! Is your studio haunted by the bowels if a stallion? A short news item from a 1930s edition of the magazine ‘The Artist’ #ghosts
November 10, 2025 at 2:33 PM
Artists! Is your studio haunted by the bowels if a stallion? A short news item from a 1930s edition of the magazine ‘The Artist’ #ghosts
Correct link ruthsiddall.co.uk/Walks/WarMem...
November 9, 2025 at 2:44 PM
Correct link ruthsiddall.co.uk/Walks/WarMem...
🧵The stone used for war memorials is often chosen carefully and can represent either the home land of the troops or the theatre of war itself. Read more about geology and stone in London’s War Memorials at ruthsiddall.co.uk/Walks/WarMem... #remembrancesunday #urbangeology
November 9, 2025 at 11:20 AM
🧵The stone used for war memorials is often chosen carefully and can represent either the home land of the troops or the theatre of war itself. Read more about geology and stone in London’s War Memorials at ruthsiddall.co.uk/Walks/WarMem... #remembrancesunday #urbangeology
Aercap House on St Stephen’s Green, clad in Kilkenny limestone, Portland roach and Wicklow granite #urbangeology #dublin
November 8, 2025 at 3:06 PM
Aercap House on St Stephen’s Green, clad in Kilkenny limestone, Portland roach and Wicklow granite #urbangeology #dublin
Panels of Irish ‘Marble’ in the foyer of what is now the Department of Justice in Dublin. Stunning example of #urbangeology
November 7, 2025 at 5:46 PM
Panels of Irish ‘Marble’ in the foyer of what is now the Department of Justice in Dublin. Stunning example of #urbangeology
Reposted by Ruth Siddall
These dark patches on the limestone are ancient animal (shrimp-like creatures, we think!) burrows, made when this was a muddy sea floor. It is believed that a storm washed the the animals from these burrows and filled them in with gravel or sand (in this case Crinoid segments).
November 7, 2025 at 10:33 AM
These dark patches on the limestone are ancient animal (shrimp-like creatures, we think!) burrows, made when this was a muddy sea floor. It is believed that a storm washed the the animals from these burrows and filled them in with gravel or sand (in this case Crinoid segments).
Reposted by Ruth Siddall
Well, that was unsettling 😳
Have a read (link in post below)!
Have a read (link in post below)!
I've TWO of these beautiful 'Witch & Hare' original linocuts by my mum, Jo, to give away to my Bluesky followers. The print is from my recently republished book, Help The Witch.
All you have to do to enter is repost this story from the book (maybe give it a read too?) www.tom-cox.com/robot-2/
All you have to do to enter is repost this story from the book (maybe give it a read too?) www.tom-cox.com/robot-2/
November 7, 2025 at 10:17 AM
Well, that was unsettling 😳
Have a read (link in post below)!
Have a read (link in post below)!
Reposted by Ruth Siddall
'Professor Sally Foster, of the University of Stirling’s Faculty of Arts and Humanities, has now discovered the existence of this body of fragments, only one of which was officially recognised when she began her research.'
New Stone of Destiny fragments uncovered by Stirling University expert
NEW research led by Stirling University has revealed the existence and fate of many fragments of the Stone of Destiny, including those secreted away…
www.thenational.scot
November 7, 2025 at 8:47 AM
'Professor Sally Foster, of the University of Stirling’s Faculty of Arts and Humanities, has now discovered the existence of this body of fragments, only one of which was officially recognised when she began her research.'
This is true - I know this practice relates to indigenous ‘sky cultures’ which I don’t object to but it seems they are really only US relevant names with little recognition of other cultures. Do correct me if I’m wrong!
Have we always known the names of the full moons - outside of the harvest moon? I feel it’s just been the last couple of years the names have really been pushed.
November 5, 2025 at 6:35 PM
This is true - I know this practice relates to indigenous ‘sky cultures’ which I don’t object to but it seems they are really only US relevant names with little recognition of other cultures. Do correct me if I’m wrong!
Ty Hyll, Capel Curig, Wales. Built out of large rough blocks of the local rhyolitic volcanic rocks. Little is known of its history, the local myth is that the house was built in a day. Not sure I buy that as an excuse for not reducing block size, nevertheless an intriguing building #urbangeology
November 2, 2025 at 6:39 PM
Ty Hyll, Capel Curig, Wales. Built out of large rough blocks of the local rhyolitic volcanic rocks. Little is known of its history, the local myth is that the house was built in a day. Not sure I buy that as an excuse for not reducing block size, nevertheless an intriguing building #urbangeology
A major day in history and one that affected my family who lived in Dolgarrog. My Taid (grandad) helped with the rescue #OTD #100yearsagotoday #centenary #dolgarrogdamdisaster
Today marks the #Centenary of the #Dolgarrog Dam #Disaster The village never forgot and UK #Reservoir Saftey Laws were changed because of it Read what our colleague Dr Lynda Yorke wrote about this event & how it shaped the community theconversation.com/when-the-dam...
When the dam broke: the 1925 disaster that reshaped a Welsh community and a country’s safety laws
A century after a dam burst in Dolgarrog, killing 16 people, the Welsh village still lives with the legacy that reshaped UK safety laws and its own identity.
theconversation.com
November 2, 2025 at 10:44 AM
A major day in history and one that affected my family who lived in Dolgarrog. My Taid (grandad) helped with the rescue #OTD #100yearsagotoday #centenary #dolgarrogdamdisaster
Reposted by Ruth Siddall
Today marks the #Centenary of the #Dolgarrog Dam #Disaster The village never forgot and UK #Reservoir Saftey Laws were changed because of it Read what our colleague Dr Lynda Yorke wrote about this event & how it shaped the community theconversation.com/when-the-dam...
When the dam broke: the 1925 disaster that reshaped a Welsh community and a country’s safety laws
A century after a dam burst in Dolgarrog, killing 16 people, the Welsh village still lives with the legacy that reshaped UK safety laws and its own identity.
theconversation.com
November 2, 2025 at 8:16 AM
Today marks the #Centenary of the #Dolgarrog Dam #Disaster The village never forgot and UK #Reservoir Saftey Laws were changed because of it Read what our colleague Dr Lynda Yorke wrote about this event & how it shaped the community theconversation.com/when-the-dam...
Reposted by Ruth Siddall
We had great fun on our whistle stop tour of London all those years ago, and I love the idea of the cultural infrastructure pf a place being imprinted by the history of the rocks below (or sometimes borrowed!).
October 31, 2025 at 1:14 PM
We had great fun on our whistle stop tour of London all those years ago, and I love the idea of the cultural infrastructure pf a place being imprinted by the history of the rocks below (or sometimes borrowed!).
Reposted by Ruth Siddall
For 61 years the #BBCWorldService has been broadcasting the latest in science via its weekly Science in Action programme. That dies in the next half hour, with this final edition, reflecting on the fall in trust in expertise driven by malign interests over recent years.
October 30, 2025 at 8:20 PM
For 61 years the #BBCWorldService has been broadcasting the latest in science via its weekly Science in Action programme. That dies in the next half hour, with this final edition, reflecting on the fall in trust in expertise driven by malign interests over recent years.
Why we should be building in stone
- Stone: The ancient material making a comeback www.bbc.com/news/article...
- Stone: The ancient material making a comeback www.bbc.com/news/article...
Set in stone: The old building technique makes a comeback
Could stone be the environmentally friendly way forward in the construction industry?
www.bbc.com
October 29, 2025 at 9:08 AM
Why we should be building in stone
- Stone: The ancient material making a comeback www.bbc.com/news/article...
- Stone: The ancient material making a comeback www.bbc.com/news/article...
Reposted by Ruth Siddall
Spotted in the wall at Bath Spa Uni yesterday @pavementgeology.bsky.social #stoneworkSunday
October 26, 2025 at 9:42 AM
Spotted in the wall at Bath Spa Uni yesterday @pavementgeology.bsky.social #stoneworkSunday
Reposted by Ruth Siddall
#FossilFriday: Take a look at these microfossils (foraminifera, mostly globigerinid) that we find in early #Neolithic Għar Dalam ceramics in #Malta!
October 24, 2025 at 3:32 PM
#FossilFriday: Take a look at these microfossils (foraminifera, mostly globigerinid) that we find in early #Neolithic Għar Dalam ceramics in #Malta!
Reposted by Ruth Siddall
New species of #coelacanth from the Early Triassic of China just dropped. Say hello to Whiteia anniae.🐟🧪 #FossilFriday
www.nature.com/articles/s41...
www.nature.com/articles/s41...
October 24, 2025 at 5:42 PM
New species of #coelacanth from the Early Triassic of China just dropped. Say hello to Whiteia anniae.🐟🧪 #FossilFriday
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Ruth Siddall
Reposted by Ruth Siddall
六本木ヒルズけやき坂通りの壁に巻貝や厚歯二枚貝の化石を発見！モロッコ産のイエロープロヴァンス🇲🇦
思ってたより古めの石材だった。
思ってたより古めの石材だった。
October 24, 2025 at 10:38 AM
六本木ヒルズけやき坂通りの壁に巻貝や厚歯二枚貝の化石を発見！モロッコ産のイエロープロヴァンス🇲🇦
思ってたより古めの石材だった。
思ってたより古めの石材だった。
Reposted by Ruth Siddall
#FossilFriday Not to be outdone by Isaac Newton who is buried beneath a gastropod fossil in Westminster Abbey, the famous geologist Charles Lyell’s gravestone is Carboniferous crinoidal limestone full of columnals of these ‘sea-lilies’.
October 24, 2025 at 6:06 AM
#FossilFriday Not to be outdone by Isaac Newton who is buried beneath a gastropod fossil in Westminster Abbey, the famous geologist Charles Lyell’s gravestone is Carboniferous crinoidal limestone full of columnals of these ‘sea-lilies’.
Reposted by Ruth Siddall
long short story
September 19, 2025 at 7:08 PM
long short story
A little bit of #geotourism and #geosouvenirs. I’m fascinated by this sand art from Alum Bay (and elsewhere). It combines my love of pigments, geology and tat. #sandart
October 22, 2025 at 10:42 AM
A little bit of #geotourism and #geosouvenirs. I’m fascinated by this sand art from Alum Bay (and elsewhere). It combines my love of pigments, geology and tat. #sandart