In the Cordillera, I estimated one mass of conglomerate at ten thousand feet; and although conglomerates have probably been accumulated at a quicker rate than finer sediments, yet from being formed of worn and rounded pebbles, each of which bears the stamp of time, they are good to show how slowly the mass must have been heaped together.
Andeen mendikatean konglomeratu masa batek 10.000 oin zituela kalkulatu nuen; eta, daitekeena den arren konglomeratuak sedimentu meheagoak baino azkarrago pilatu izana, harkaskar landu eta biribilduz osatuak direnez gero, haietako bakoitzak denboraren zigilua daramalarik, masak zein astiro pilatu behar izan zuen erakusteko balio dute.