David Webster
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davidjwebster.bsky.social
David Webster
@davidjwebster.bsky.social
Geologist, Islay geology guide book author, Fossil Grove trustee, whisky lover. Secretary Geological Society of Glasgow.
Come to the Fossil Grove this Sunday (15th) - anytime 12-4. Come and hear about what's going on with the renovation programme. Tours of the quarry area. Children's activities. Displays and fossils. (Note: The building itself is closed).
www.fossilgroveglasgow.org
June 11, 2025 at 9:57 PM
Good turn out today for a geology walk on the Rhinns of Islay. 1.8 Ga Metagabbro and syenitic gneiss. Triassic faulting, Paleocene dykes and late glacial raised beaches... www.islaygeology.org
June 1, 2025 at 8:25 PM
Reposted by David Webster
🧪⚒️I just posted an episode on megafloods with Vic Baker, a pioneer in the field. Megafloods are cataclysmic events that devastate the landscape. The Mediterranean Basin was filled by two successive megafloods. And a Black Sea megaflood might be the basis for the Biblical account of Noah's flood.
April 13, 2025 at 2:54 PM
Reposted by David Webster
🧪⚒️New episode - Lindy Elkins-Tanton on the origin of Earth's water. Only about 0.02% of the Earth is water, but even that's been a puzzle as Earth formed within the snow line where no liquid water would have been present. Isotopic analysis provides the clues to resolve this apparent paradox.
March 27, 2025 at 7:46 PM
Reposted by David Webster
Change to lecture programme tonight. David Webster will talk about the geology of the island of Colonsay. Palaeoproterozoic basement, the overlying Colonsay Group and spectacular igneous intrusions plus the earliest radiometric dating and 'granitisation'.
geologyglasgow.org.uk/event/colons...
The Geology of Colonsay | Geological Society of Glasgow
by David Webster
geologyglasgow.org.uk
March 13, 2025 at 7:07 AM
Reposted by David Webster
🧪⚒️I just posted an episode about using the late Paleozoic ice age as an analog to climate conditions today. It was similar in that there was low but rising CO2 and continental ice sheets. Her models suggest possible major ocean anoxia and dramatically increased runoff as CO2 climbs.
March 8, 2025 at 6:56 PM
Reposted by David Webster
Next Lecture at the Geological Society of Glasgow. Dr Simon Cuthbert on eclogites in NW Scotland. Thursday 13th March at 7pm Boyd Orr Building, Room 407 - All welcome.
geologyglasgow.org.uk/event/eclogi...
Eclogite Shangri-La: Vestiges of the Grenville orogen in the northwest Scottish Highlands (and some heroes of Scottish geology) | Geological Society of Glasgow
Dr. Simon Cuthbert, Retiring Presidential Address
geologyglasgow.org.uk
March 6, 2025 at 7:59 AM
Reposted by David Webster
Our next lecture is on Thursday 6th February at 7pm in Room 407 of the Boyd Orr Building, University of Glasgow. Dr Alex Dunhill will talk on "Species loss, community collapse and ecosystem recovery during times of mass extinction" geologyglasgow.org.uk/.../species-...
All welcome.
Species loss, community collapse and ecosystem recovery during times of mass extinction | Geological Society of Glasgow
Dr Alex Dunhill, University of Leeds
geologyglasgow.org.uk
January 31, 2025 at 8:03 PM
@bobgooday.bsky.social bob, any idea about this rock? i was sent a photo and would like to get back to the sender. its from lamlash on arran so immediately thought of you! i think some form of explosion breccia with a carbonate infill? thanks
December 28, 2024 at 9:52 PM
Reposted by David Webster
Here is a link to a recording of last Thursday's lecture given by Paige dePolo on pantodonts (weird early mammals) from New Mexico. Its well worth a view, she was very entertaining and knowledgeable! youtu.be/RWamAw6uo10
The taphonomy of a pantodont-rich assemblage from the San Juan Basin, New Mexico, USA
YouTube video by Geological Society of Glasgow
youtu.be
December 14, 2024 at 6:37 PM
Reposted by David Webster
Next Lecture at the Geological Society of Glasgow. Thursday 12th December at 7pm. Room 407 Boyd Orr Building. ALL WELCOME!
Dr. Paige dePolo, Liverpool John Moores University
“The taphonomy of a pantodont-rich assemblage from the San Juan Basin, New Mexico, USA”
geologyglasgow.org.uk/event/the-ta...
November 30, 2024 at 11:57 AM
Nice anticline in metagreywackes at Saligo Bay, Islay. The area is known as The Arches' after the fold. Colonsay Group (earliest Dalradian, c. 800 Ma) #fridayfold
November 22, 2024 at 7:34 PM
Good to see a bit of Scottish rock from Islay in your collection! Look out for new Geol Soc memoir on the Port Askaig Fm next year
Sample set for my Snowball Earth lab exercise in Historical Geology. ⚒️
November 20, 2024 at 11:49 AM
Reposted by David Webster
Geological Society of Glasgow's YouTube channel for previous lecture recordings etc.
www.youtube.com/channel/UCfN...
Geological Society of Glasgow
www.youtube.com
November 19, 2024 at 2:20 PM
Reposted by David Webster
A link to the November 2024 Lecture by Heather Stewart on "The abyss gazes also into you: exploring the deepest oceans"
youtu.be/-6b9bi-AehM
The abyss gazes also into you: exploring the deepest oceans
YouTube video by Geological Society of Glasgow
youtu.be
November 19, 2024 at 2:07 PM
New paper helps tie down the start, age and duration of the Cryogenian 'Sturtian' glaciation. Zircons in the Port Askaig Formation from the Garvellach Islands show YSG younging-upwards and help the case for a 'Golden Spike' there. For now we make do with a golden carrot! doi.org/10.1144/jgs2...
August 23, 2024 at 10:11 AM
Geological Society of Glasgow Monthly Lecture - Thursday 14th March 2024
Dr. Murray Reid,
“What lies beneath: the geology of Strathkelvin”
Boyd Orr Building 7.00 pm
March 5, 2024 at 8:05 PM
Email sec@gsocg.org for zoom link
Geological society of glasgow - Next lecture Biogeochemical cycling of essential elements within Mars analogue sites by Toni Galloway (St Andrews). Thursday 8th Feb 19:00 by zoom.
us02web.zoom.us/j/87137408991?…
February 2, 2024 at 8:04 PM
Geological society of glasgow - Next lecture Biogeochemical cycling of essential elements within Mars analogue sites by Toni Galloway (St Andrews). Thursday 8th Feb 19:00 by zoom.
us02web.zoom.us/j/87137408991?…
February 2, 2024 at 8:02 PM
TV camera at the fossil grove today. Much excitement! Glasgow City Council has agreed to fund £450,000 worth of repairs to the building to help conserve the fossils for future generations to enjoy.. a big result for geoconservation!
November 30, 2023 at 1:45 PM
I've listened to every episode, some many times. They get me up and down mountains. Essential listening for any earth scientist. Thanks oliver.
I love this podcast, I’ve listened to every episode 🤩 Thanks for making it. I find it useful for my teaching too.
November 27, 2023 at 9:05 AM
The 'billion-year gap' at Kilchiaran Bay, Islay. 1.8 Ga gneiss on right, 800 Ma meta-arkoses on left. Sinistral shear sense.
November 25, 2023 at 9:33 PM