ant ▁Sil ur ian ▁T us car ora ▁Form ation ▁ge olog ic ▁layer ▁forming ▁the ▁ste eper ▁north west ▁slope ▁and ▁the ▁cr est . ▁The ▁Bald ▁E agle ▁Form ation ▁cro ps ▁out ▁on ▁the ▁K ish aco qu illas ▁Valley - f acing ▁s lop es ▁of ▁Stone ▁Mountain , ▁forming ▁a ▁ste ep ▁top ographic ▁ben ch ▁below ▁the ▁Juni ata ▁Form ation . ▁Below ▁the ▁Bald ▁E agle ▁Form ation , ▁the ▁upp erm ost ▁sand stone ▁layer ▁of ▁the ▁underlying ▁Re ed sv ille ▁Form ation ▁contain ▁bra chi op ods ▁and ▁other ▁marine ▁foss ils . ▁Ac ross ▁the ▁K ish aco qu illas ▁Valley , ▁on ▁the ▁opposite ▁side ▁of ▁the ▁Jack s ▁Mountain ▁ant ic line , ▁the ▁same ▁rock ▁layers ▁are ▁repeated ▁in ▁reverse ▁order ▁on ▁Jack s ▁Mountain . ▁ ▁References ▁ ▁Geographic ▁Names ▁Information ▁System , ▁Fe ature ▁ID : ▁ 1 1 9 3 4 7 4 . ▁ ▁US GS ▁All ens ville ▁and ▁Mc ▁A lev ys ▁Fort ▁ 7 . 5 - Min ute ▁Qu adr angles ▁▁▁ ▁Category : Land forms ▁of ▁M if fl in ▁County , ▁Pennsylvania ▁Category : Land forms ▁of ▁S ny der ▁County , ▁Pennsylvania ▁Category : R id ges ▁of ▁Hun ting don ▁County , ▁Pennsylvania ▁Category : Land forms ▁of ▁Union ▁County , ▁Pennsylvania ▁Category : R id ges ▁of ▁Pennsylvania <0x0A> </s> ▁Krist ine ▁Lind bl om ▁( born ▁ 1 0 ▁November ▁ 1 9 8 2