from The Century Dictionary.
- Pertaining to or effected by means of aggradation.
- Effecting an upbuilding of sediments: contrasted with degradational agencies or those which remove material.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective geology Pertaining to or formed by
from Wiktionary, Creative Commons Attribution/Share-Alike License
Although there are numerous degradational/aggradational cycles within the Chinle Formation, a single unconformable horizon within or at the base of the Sonsela Member that can be traced across the entire western United States (the "Tr-4 unconformity") probably does not exist.