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Geological Society of Norfolk @geolsocnorfolk.bsky.social · 1d

Geoconservation Research journal (editor-in-chief Prof Mike Benton) - open access and peer-reviewed.
#geodiversity #geotourism #geoconservation
Open for submissions at oiccpress.com/gcr

Geoconservation Research

oiccpress.com

Reposted by Geological Society of Norfolk

Richard Fallon @richardfallon.bsky.social · 2d

Walking down the Madingley Road today I'll be sure to look out for ichthyosaurs. In the @sedgwickmuseum.bsky.social, of course.

Close-up of an ichthyosaur jaw, Myopterygius campylodon (Carter). Location: Madingley Road, Cambridge.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · 2d

It couldn't be clearer!
Which DTM map is this?

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Philip Amies @amiesphilip.bsky.social · 2d

Hunstanton Park esker and Ringstead down

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Philip Amies @amiesphilip.bsky.social · 6d

@hydrology.nl created this superb elevation illustration of the mouth of The Wash embayment and the west of the North Norfolk coast, prompts me to make a thread of some historic map images.

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Reposted by Geological Society of Norfolk

Charnwood Forest Geopark @charnwoodforest.bsky.social · 9d

🥳 Today is International Geodiversity Day!

📅 Every October 6th, we take a day to celebrate the importance of our planet's rocks, soils, fossils, landscapes, and much more!

♦️ Learn more about the geodiversity of Charnwood Forest: www.charnwoodforest.org/our-geodiver...

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Reposted by Geological Society of Norfolk

Norfolk Ponds Project @norfolkponds.bsky.social · Sep 11

A day of 'ghostpingo' #pond resurrection in the Norfolk Brecklands with @timholtwilson.bsky.social & other wonderful experts. By the end of tomorrow Norfolk will have 2 more of its lost ancient ponds back

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Mr and Mrs Trellis @thenorfolkcoast.bsky.social · Sep 12

Work to return a stream to its historical position, to reconnect habitats, has finished. Starston Beck flows into the River Waveney near Homersfield, on the Norfolk/Suffolk border....

www.bbc.co.uk/news/article...

Stream on Norfolk/Suffolk border returned to its historical route

The Environment Agency says the work near Homersfield will benefit wildlife and their habitats.

www.bbc.co.uk

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Sep 6

We have spectacular ploughsoil geology in East Anglia, great diversity of erratic stones in river deposits & glacial till.

* Carb & Trias plant, Jur reptile, Cret echinoid fossils. * Scots porphyry & Northum dolerite.
* Dartmoor breccia.

Fieldwalking here has a fascinating geological dimension.

The battered form of an Inoceramus fossil bivalve shell in flint, of Upper Cretaceous age. A ploughsoil find from Norfolk, UK.

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Norfolk Ponds Project @norfolkponds.bsky.social · Sep 5

It's a great when you change the map! 2 resurrected #ghostpingos, just 1 yr old, look like they have been there forever. Working with the brill @timholtwilson.bsky.social & funded by Norfolk Wildlife Trust, BFER & Heritage Lottery we have helped 22 lost ancient Ice Age ponds back to life since 2021

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Sep 5

Rhinos are extraordinary Pleistocene survivors - natives of the Britain in both warm & cold phases. 🦏
Here's a recent find (molar, lower jaw) from Norfolk river gravels which GSN members are researching. Could be Coelodonta antiquitatis (cold) or Stephanorhinus hemitoechus (warm). 🌍🗻🪨

Side view of a rhinoceros molar tooth (lower jaw) in a good state of preservation. It is stained dark presumably by burial in organic-rich sediment. It shows three long roots and three projecting cusps bridged across the back.

Occlusal view of a rhinoceros molar tooth in a good state of preservation. It is stained dark presumably by burial in organic-rich sediment. It shows three loops of enamel forming cusps.

Reposted by Geological Society of Norfolk

Tim Holt-Wilson @timholtwilson.bsky.social · Aug 9

@geolsocnorfolk.bsky.social

British Geological Survey @bgs.ac.uk · Aug 9

Summer days at the beach looking at pebbles is a pastime that just can't be beaten!

Here BGS' Rock Doc, Clive Mitchell discusses spotting, identifying and collecting the pebbles you can find on Britain's beaches - and the history that these pebbles contain.

www.bgs.ac.uk/news/pebble-...

A pebbly beach in Scotland. In the distance to the right there is a single house with white walls and a grey roof. The rugged shoreline and sea is to the left. It is a clear, sunny day.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Aug 26

RIP Dr Sylvia Peglar - pioneering investigator of the fossil pollen stratified in Diss Mere, Norfolk - a backdrop to so much inspiring, recent palaeo-environmental work by @royalholloway.bsky.social @amywalsh.bsky.social

A summer view over Diss Mere, Norfolk UK. The lake has an unruffled surface and the view is framed by trees.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Apr 8

A Silurian graptolitic pebble from the Frankenwald, eastern Germany, found in South Norfolk.
How did it get there?
⚒️🌏

Geological Society of Norfolk @geolsocnorfolk.bsky.social · Mar 23

'A unique, far-travelled graptolite-bearing erratic pebble from the Lowestoft Till (Quaternary: Anglian Stage) of North Lopham, Norfolk'-
www.lyellcollection.org/doi/full/10....
Such a rarity, it deserves a paper all to itself!
#Pleistocene #geology #Norfolk #UK #Germany

A rounded, black Silurian chert pebble showing a Monograptus priodon graptolite fossil. It has been sawn at one end to remove a thin section for analysis.

Close-up view of a uniserial graptolite rhabdosome of Monograptus priodon.

An arable field at North Lopham, Norfolk, UK, showing the findspot of the graptolitic pebble (circled in red).

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Reposted by Geological Society of Norfolk

Thomas R. Holtz, Jr. @arctomet.bsky.social · Aug 4

Dingsu Feng, Thomas Tütke, Eva Maria Griebeler, Daniel Herwartz, and Andreas Pack (2025)
Mesozoic atmospheric CO2 concentrations reconstructed from dinosaur tooth enamel
Proceedings of the National Academy of Sciences 122(33): e2504324122
www.pnas.org/doi/10.1073/...

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

www.pnas.org

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Jul 15

East Anglia's mediaeval ship's ballast originated in Cornwall, Scotland, Scandinavia, northern England, the Baltic etc - leapfrogging from ship to shore, shore to ship & back again, over hundreds of years. Their diversity makes a great teaching resource for schools. @discoverdunwich.bsky.social

Tim Holt-Wilson @timholtwilson.bsky.social · Jul 6

A large cobble of Anorthosite identified at Dunwich @pavementgeology.bsky.social. Likely to be extremely ancient, formed as scum on the surface of primordial Earth. Later an asteroid smashed into the molten mass, tore off a gobbet of magma which formed the Moon and its Anorthosite crust. ⛰️🌍 #geology

A cobble of grey Anorthosite igneous rock in a church wall at Dunwich, Suffolk, UK. It is likely to be an example of ship's ballast from Scandinavia.

A woman in a red shirt and grey hat looking closely with a hand lens at an Anorthosite cobble in a church wall at Dunwich

A woman in a white tee-shirt looking closely with a hand lens at an Anorthosite cobble in a church wall at Dunwich.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Jul 7

Good to meet you on the road to geological discoveries!

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Reposted by Geological Society of Norfolk

Tim Holt-Wilson @timholtwilson.bsky.social · Jul 6

Aquatic adventures revealing at first hand a world so few of us get to see. There some signs that all is not well there, though...
@carlsayer.bsky.social @danhoare.bsky.social @norfolknats.bsky.social @geolsocnorfolk.bsky.social

Nicola Crockford @numenini.bsky.social · Jul 6

On May 11 found bones of the extinct, giant Steppe Bison (Bison priscus) from Pleistocene deposits of River Wissey, exposed in Cut-Off Channel at Wretton, 1km from Nattergal's High Fen. (Wolf & Woolly Rhino also found here). Thanks @timholtwilson.bsky.social‬ for setting me the mission! #MySwim 1/25

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Jun 2

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:-(

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Jun 2

As with rats in London, one is rarely more than a few feet away from a flint in Norfolk.
They are an endless source of interest to beachcombers and geologists alike - and often inspirational for artists such as Henry Moore. Your specimen prompts flights of fantastical imagination! #geology #art

Tim Holt-Wilson @timholtwilson.bsky.social · Jun 1

Flint sometimes throws up surprises. Here, a white cavity with crystals of quartz and brassy pyrite and wondrous 🦚 colours from traces of [biogenic iron] mineralisation.
A rainbow inscape 🌈 of threads and zones of colour.
#Norfolk #geology 🌍⛰️ UK

A close-up photo at x100 magnification of colours in a broken flint nodule. Peacock colours of red, orange, purple, blue and green form a weird, cloudy inscape.

A microscope photo of the colours in a broken flint nodule. Complexions of buff, yellow, red, orange, purple, blue and green form a fan of zones and threads of colour.

A close-up photo at x20 magnification of the surface of a broken flint nodule, showing zones of peacock colour.

The surface of a flint nodule showing a white cavity containing quartz and pyrite crystals and a multicolored patch of staining. The image is approximately magnified x10.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · May 2

'Rethinking the origins of plate tectonics' - Naomi Oreskes explores how our understanding of the planet has been shaped by money. An online lecture @ri-science.bsky.social on Monday 12th May - www.rigb.org/whats-on/ret...

A view of the rift zone of the mid-Atlantic ridge outcropping in Iceland. There is a rocky ravine in the foreground marking the rift and an attractive landscape of firths and islands in the background.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Apr 22

'Macaque molar from the Red Crag Formation, Waldringfield, England' - investigating a late Miocene or Pliocene specimen in the @sedgwickmuseum.bsky.social collection.
Open Access at hal.science/hal-04460190.... #Suffolk #geology #palaeontology 🌏⚒️

An engraving of a macaque monkey (Barbary Ape, Macaca sylvanus) from 'Mammalia' by JG Wood (London, 1865).

Photographs of different aspect of a molar tooth of Macaca sp. found c.1908 in the Red Crag Formation of Waldringfield, Suffolk, in the collection of the Sedgwick Museum of Earth Sciences, Cambridge.

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Geological Society of Norfolk @geolsocnorfolk.bsky.social · Apr 22

'Prehistoric Beasts: Land, Sea, Sky' exhibition at Bury St Edmunds, Suffolk, UK using real and cast specimens @sedgwickmuseum.bsky.social and artwork by Alex Pritchard.
Booking and further info at www.moyseshall.org/whats-on/det...

Geological Society of Norfolk @geolsocnorfolk.bsky.social · Apr 16

'The Cretaceous world: plate tectonics, palaeogeography and palaeoclimate' - an excellent introduction to the #Cretaceous - a world 10°C warmer; sea levels 70 m higher - and its continental geographies. Download at www.lyellcollection.org/doi/pdf/10.1... thanks @geolsoc.bsky.social 🌏⚒️ #geology

Colourful Cretaceous strata in Hunstanton Cliffs, Norfolk, UK: brown Carstone sandstone; Red Chalk; Grey Chalk, a sequence spanning 110 to 95 million years BP.

A pale blue lagoon in a chalk quarry in Norfolk, UK, showing white blocks of chalk in the foreground.

An artists' impression of a late Cretaceous seabed, as displayed at Saffron Walden Museum, Essex, UK.
Sharks, ammonites, sponges, belemnites and echinoids can be seen; also burrows in the sediment.

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Reposted by Geological Society of Norfolk

British Geological Survey @bgs.ac.uk · Apr 15

What does the next generation of coastal environmental models look like? 🔎

Developed with @ecioxford.bsky.social & @unisouthampton.bsky.social, CoastalME is a free, open-source tool helping predict how coastlines evolve.

🔗 Read more: www.bgs.ac.uk/news/what-do...

Coastal erosion at Mappleton, south of Bridlington, East Yorkshire coast. BGS © UKRI.

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