1881 30 Shale..may be seen in most of the road cuts along the mountain sides.
1978 8 June 459/1 I have collected unweathered samples from new exposures in quarries and roadcuts in the type area.
2002 43 1829/2 Banded pumice is particularly abundant in an ignimbrite cropping out locally in roadcuts between Abades and Poris de Abona.