u3a

Oban

Geology

Status:Active, open to new members
Convenor:
When: On Tuesday afternoons 1:45 pm-3:45 pm
No further indoor meetings until the Autumn
Venue: Studio Theatre, Corran Halls
Cost: £2 plus optional £1.50 for a drink

There will be no further indoor meetings until the Autumn.

Torridonian Events - The slides for this talk are shown below. See also the talk by Rob Butler on YouTube Forensics of an ancient meteor impact - Stac Fada, NW Scotland and a link to a major symposium on the evidence for the meteorite impact in 2024.

We are planning at least one or more field excursions, again provided members want us to set these up. As already advertised we are planning one to the North West Highlands for 3/4 days in the last week of September. We may be able to run shorter excursions locally as well.

In the developing Community Garden in Cullipool on Luing, we are establishing a real rock garden – an area dedicated to showing the remarkable range of rocks from across Scotland and beyond. The heart-shaped design contains areas for igneous, metamorphic and
sedimentary rocks, with named groups in these areas. You are welcome to come to view this at any time. In addition if you have any
interesting larger (hand-sized or bigger) spare rocks gathered over the years that you would like to contribute to the rock garden, please hand them to us or leave by the bench alongside the rock garden.

Please see below for summaries of many of our meetings.

Some of you may have tuned in to Melvin Bragg’s In Our Time episode on Thursday 12 June - it’s well worth hearing and still available to hear. It covers an aspect of the evolution of life in period we covered in the Spring this year, from around 400 million years ago – the evolution from gills to means of air breathing
in land animals, including our lungs.

A couple of talks on video via YouTube from past monthly talks given at the Glasgow Geological Society which may interest you:
The Geology of Colonsay:
Tectonic Deformation in the NW Highlands - a deeper look into the ideas we gave last month

In addition, here are two updates for the Life Story series:
First breaths of a hospitable Earth: The early history of oxygen updated - perhaps; an editorial + open access paper in ‘Nature’
Archaean oxygen oases driven by pulses of enhanced phosphorus recycling in the ocean

An article in ‘New Scientist' gives a new angle on the origin of complex life, but beware you need a subscription to New Scientist to read the full text A whole new world of tiny beings challenges fundamental ideas of life

Finally, for the more adventurous, how about a visit to Papa Stour in Shetland - dramatic coastline of faulted and folded Devonian rocks, with multiple sea caves, all best seen from the sea.


If you are new to Geology, please see these summaries of earlier sessions -

During last Summer break we had a short field excursion around Oban itself. We all learned a lot.