230 
EXCURSIONS. 
On the way from Gill Rock to East Marton a boulder of 
fine-grained Silurian Grit was observed. This had been carried 
into the district by glacial action and was probably derived from 
the exposures in Upper Ribblesdale. 
After lunch at East Marton, the walk was continued by 
three small quarries at Broughton Fields to Glints Delf. 
In the third of these quarries the bedding is much dis- 
turbed by overfolding, while on the south side the beds are 
vertical. 
After a walk over the fields of about one mile, Swindon Moor 
Quarry was reached, where the limestones were found to be 
very fossiliferous, many Crinoids being collected. The beds 
are vertical, or nearly so, and show signs of much faulting. 
The whole of these exposures is on the flanks of a great 
anticlinal fold in the Carboniferous Limestone, running in a 
south-westerly direction from Skipton to Barnoldswick, where 
it is cut off by a fault which brings in the Millstone Grit and 
shifts the limestone outcrop to the north. 
The return journey to Elslack was then commenced, expo- 
sures in the Pendleside Series being examined en route. 
Colne was reached by train after a glorious day. The 
weather had been perfect, the heat of a clear sun being tem- 
pered by a refreshing breeze. 
The members dined together at the Crown Hotel, Colne, 
after which they adjourned to the Municipal Technical School, 
where Mr. Albert Wilmore, B.Sc, F.G.S., read a paper on " The 
Structure and Origin of Limestone Knolls," which was followed 
by a discussion (see pp. 158 to 170). 
The chair was taken by Mr. Cosmo Johns. 
A start was made from Colne at 9 a.m. on Saturday morn- 
ing, and the members were conveyed by Avagonette through 
Barrowford, Blocko, and by Coldweather Hill to Gisburn, Sawley, 
Grindleton, and Chatburn. 
The route from Colne to Gisburn lies across the strike of 
the beds, so that the party passed successively across the out- 
crops of the Lower Coal Measures, the Millstone Grit, the Pendle- 
side Series, and the Carboniferous Limestone. 
