Beacon Series:

Beacon sandstone outcrops on the bigger peaks west of the snout of the Taylor Glacier. The contact of the basement with the Beacon Series was in no place observed as an extensive dolerite sill followed the contact. Over 2,000 feet of Beacon Sandstone occur in the upper Taylor Valley. It consists of finely bedded to massive current bedded ortho quartzite, with occasional pebbles and manganese nodules, and abundant worm casts throughout. Near the base discontinuous red and green bands occur. No carbonaceous remains were observed.