Definition from Wiktionary, the free dictionary
- (geology) The direction in which stratigraphy becomes younger, for a particular formation
2001 May 11, Timothy M. Kusky et al., “The Archean Dongwanzi Ophiolite Complex, North China Craton: 2.505-Billion-Year-Old Oceanic Crust and Mantle”, in Science, volume 292, number 5519, DOI:10.1126/science.1059426, pages 1142-1145:
- Where well preserved, the pillows show cuspate lower boundaries and lobate upper contacts, defining stratigraphic younging (Fig. 3 E).