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24 Apr 2020 @ 12:00 pm
27 Apr 2020 @ 12:00 pm
Event Category:

This excursion has been cancelled because of the coronavirus outbreak. We hope to reschedule it for 2021.

Leader: David Webster

Field days: Friday (afternoon)/ Saturday/ Sunday/ Monday (morning)

This is a repeat of the 2019 Islay trip. Priority will be given to members who could not come last year because the trip was already full.

The geology of Islay is amazingly varied – 1800 Ma gneiss, Precambrian metasediments and fossil stromatolites, the famous Port Askaig Tillite (possible “Snowball Earth”?), low grade metamorphic Dalradian rocks retaining original sedimentary structures, reactivated and reversed extensional faults, substantial mineralisation, 60 Ma igneous intrusions (opening of the Atlantic Ocean) and a large selection of Quaternary Ice Age features. We plan to visit key localities with the aid of “A Guide to the Geology of Islay” by David Webster, Roger Anderton & Alasdair Skelton.

Boulder of granite in Port Askaig tillite


Accommodation will be B & B in Bowmore; transport will be in shared cars.

If you are interested, please contact the Residential Excursions Secretary, Maggie Donnelly, at restrips@gsocg.org as soon as possible, because accommodation is not plentiful and gets booked up quickly.