(microporphyritic basalt)
*Fintry Hills Lava Member (basaltic lava)
*Shelloch Burn Lava Member (trachybasalt)
*Spout of Ballochleam Lava Member (microporphyritic basalt)
*Slackgun Volcaniclastic Member (sandstone, conglomerate)
*Skiddaw Lava Member (basaltic lava)

Stronend, the summit, is not formed from the stratigraphically uppermost member but from the Shelloch Burn lavas since the entire pile is tilted. The northern cliffs and Double Craigs are formed by the Spout of Ballochleam lavas. Substantial amounts