In other cases we have the plainest evidence in great fossilised trees, still standing upright as they grew, of many long intervals of time and changes of level during the process of deposition, which would not have been suspected, had not the trees been preserved:
Beste kasu batzuetan, egun ere, hazten ari zirenean bezala, zutik dirauten zuhaitz handietan dugu sedimentazio prozesuan izaniko tarte oso luzearen eta sestra aldaketa askoren frogarik argiena, kontu horiek susmatu ere egin ez ziratekeelarik, zuhaitzak kontserbatu ez balira: