Neoproterozoic Glaciation In Scotland and Ireland: The Port Asking Formation
Ever heard of Snowball Earth? Join the Geological Society of Glasgow for a free public lecture, presented by David Webster at Kelvin Hall on Thursday 11th April.
About Neoproterozoic Glaciation In Scotland and Ireland: The Port Asking Formation
Ever heard of Snowball Earth? The time the whole planet was covered by Ice. 640 to 720 million years ago a series of glacial periods occurred worldwide which are given as evidence of this event and rocks of this age are found in Scotland.
Want to learn more? Then join us for a free public lecture, presented by David Webster and hosted by the Geological Society of Glasgow.
Summary
The Port Askaig Formation in the Garvellach Islands and Islay is some 1100m thick and includes 48 diamictites. Many were deposited by grounded ice; a few were ice-rafted. The PAF records 76 climatically-related episodes: 28 glacial, 25 periglacial and 23 non-glacial, plus unusual iron-rich and glaciotectonic intervals. Amongst Cryogenian glacial successions, the PAF is exceptional in its combination of formation thickness; the number of climatically-related episodes and the thickness (25km) of its host Supergroup.
PAF studies started with MacCulloch (1819); Thomson (1871) proposed a glacial origin; Pitcher and Shackleton (1961) measured the strata in the Garvellachs, leading to Tony Spencer’s 1971 Geological Society of London Memoir (#6). A large multi-disciplinary team is now preparing a new Memoir, their recent work has led to proposal that the base of the PAF on Garbh Eileach be a candidate GSSP (Golden Spike) for the Cryogenian world-wide. Evidence for and against a ‘Snowball Earth’ during PAF times will also be discussed.
Biography
David Webster graduated with a geology degree from Oxford University in 1976 and then worked in the oil industry. He undertook a Master’s in Environmental Management from Strathclyde University and subsequently worked in local government in Scotland. On retiring he obtained a Master’s Degree on the geology of Islay from Stockholm University and has continued to research the geology of Islay, Jura and Colonsay; writing two guidebooks on the geology of these islands.
Where possible we will update our listings to notify of cancelled, postponed and rescheduled events, however we STRONGLY ADVISE that you check with the venue/organiser in the first instance for updates.
All information (whether in text or photographs) is supplied in good faith but should not be relied upon as being a statement of representation or fact.GOT AN EVENT TO SHARE? It's free to post your events on What's On Glasgow, click here to find out more!
Want to be the first to hear about what's happening in Glasgow? Just hit 'Like' on our Facebook page, join the What's On Scotland Facebook Group and 'Follow' on our Twitter account and you're all set!Sponsored Links
Other Events at Kelvin Hall
Kelvin Hall Building Tour
Join the volunteer tour guides for a free 45 minute tour of Kelvin Hall and take a peek behind the scenes in Glasgow Museums' store!
READ MORE
Andy’s Man Club at Kelvin Hall
Andy's Man Club meets every Monday at 7pm in the Activity Space at Kelvin Hall... come along for a brew, a biscuit and a chat.
READ MORE
Twilight Tour: The History of Mental Healthcare
Kelvin Hall welcomes you to an evening tour of the Glasgow Life Museums store there which will highlight mental health care for mental health awareness week.
READ MORE
Movement In Nature - Writing Workshop
In this creative writing workshop from National Library of Scotland at Kelvin Hall, the theme of movement is the starting point for thinking about how we interact with the natural world in our lives.
READ MORE
BEATS Film Screening with Q&A
The National Library of Scotland at Kelvin Hall delighted to be screening the award-winning film BEATS (2019) followed by a Q&A with Kieran Hurley who wrote the original play.
READ MORE
Glasgow Science Festival: Family Crafts: Showbox Diorama
Come make a Showbox Diorama at the Moving Image & Sound Archive, National Library at Kelvin Hall.
READ MORESponsored Links
Similar events you might like...
Burrell Bites
Enjoy a specially curated talk about the history and context of a new object(s) from the Burrell Collection each week, delivered by Curators, Gallery Assistants, Volunteer Guides and more!
READ MORE
Themed Tours at The Burrell Collection
Join the Burrell Collection's expert Volunteer Guides as they take you on a journey through the collection with free themed weekly tours.
READ MORE
The Glasgow Gathering of Quilters Talks
The Glasgow Gathering of Quilters hold a monthly programme of talks at Heart of Scotstoun Community Centre between September and June... all welcome!
READ MORE
Information Lecture: Help and Healing on the Spiritual Path through the teaching of Bruno Groening
A lecture about spiritual healing and help through the teaching of Bruno Groening is taking place in Glasgow.
READ MORE
Wild Camping Information Sessions
These sessions from Skylark Guiding are designed to give you the skills, knowledge and confidence to have your own wild camping adventures across Scotland!
READ MORE
Self Esteem - Inspirational Talk & Meditation
During this illuminating talk, Buddhist monk Gen Kelsang Dornying will explore how it is possible to generate and remain anchored in strong, resilient and fearless states of mind.
READ MORE
Let’s Talk History at Provan Hall: Archaeology of Govan Old Church
Provan Hall's Let's Talk History series of events continues on Thursday 9th May with a talk by Stephen Driscoll on the archaeology of Govan Old Church.
READ MORE
Pint of Science Glasgow
The Pint of Science festival in Glasgow brings some of the most brilliant scientists to your local pub to discuss their latest research!
READ MORE
An Evening With Nicola Dinan
Join Nicola Dinan at Waterstones Argyle Street for an event celebrating the paperback launch of her debut novel, Bellies, a beautiful story of love, loss, and transitions.
READ MOREFind other events in Glasgow
Sponsored Links
Go Radio | Number 1 for Glasgow & The West - Listen on DAB, Online or on your Smart Speaker, just say "Launch Go Radio"
