The Garvellachs

Leader: David Webster

Field days: Friday/Saturday/Sunday/Monday

Geological Background
The Garvellach islands expose a magnificent section of the glacial Neoproterozoic Port Askaig Formation. Although part of the Dalradian, it is relatively undeformed and contains an extraordinary amount of glacial features including spectacular glaciotectonic “rafts” as well as a sequence at the base recording the transitional onset of glaciation at the start of the Cryogenian – which is a prime candidate for a global “golden spike” or GSSP. We will discuss the concept of snowball earth and assess how the succession here fits (or doesn’t) with that model. We will aim to have one day on each of the three main islands in the archipelago.

No of participants: 10 maximum

Itinerary
To be announced

Self service breakfast/lunch.
All weather dependent.
Transport to/from Cuan Ferry: Responsibility of participants

Accommodation
Rubha Fiola field centre on Lunga. Youth hostel type accommodation. Dormitory rooms with bunks, some smaller rooms with beds. Off grid with battery powered lighting/phone charging. Solar hot water.

Personal Equipment
Sleeping bags, towels, head torch, helmet, gloves

Food
A variety of breakfast and lunch supplies will be available for DIY preparation. Dinner will be provided by centre staff.

Fitness/Agility
Ability to get in/out of small boats, including transfers from the larger boat to a smaller landing craft onto potentially slippery rocks.

Terrain
Walking on rough ground and rocky coasts without paths, but distances are relatively short.

Cost
Approx. £450 (including all boat trips, accommodation, food and leaders’ expenses).

This will be a repeat of the excursion held in 2024, but with 4 field days instead of 3. The maximum number of participants is 10, and it is expected that the places will be taken quickly. If you are interested in participating, please email the society’s secretary.