Ullapool Day 4



OUGS North West Branch Ullapool Trip May 2002

THURSDAY 9th
Drive to Scourie Bay. Walk to Poll Earna and back, igneous and metamorphic phenomena. Lunch in Scourie. Drive to Tarbet. Traverse northwards to examine well-exposed Lewisian rocks, structures and textures.

Previous Day Day 1, Monday 6th.
Day 2, Tuesday 7th.
Day 3, Wednesday 8th.
Day 4, Thursday 9th.
This ultra-basic (Pyroxinite) exposure in a field near Scourie may represent a layered gabbro from a piece of the Lewisian ocean floor.
Layered Gabbro 		On our way to see the Scourie dyke we met the West Scotland OUGS trip coming back.
The Other Group 		This section of Scourie dyke at Poll Earna, a late intrusion innto the Lewisian complex (~2200-2400 Ma ), shows signs of Laxfordian deformation (~1800-2000 Ma ).
Scourie Dyke
General view of Poll Earna Bay and the Scourie dykes.
Poll Earna Bay 		An ultra-basic remnant in the Lewisian gneiss north of Tarbet
RemnantTarbet 		This wide dyke at Rubh' an Tiompain north of Tarbet shows numerous shear features.
Wide Dyke
And on the day we left - it rained!
Ulapool
Martin Elsworth.