onlap
English
[edit]
Etymology
[edit]Noun
[edit]onlap (plural onlaps)
- (geology) The phenomenon of successively younger rock strata extending progressively further across an erosion surface cut in older rocks.
- 2001 December 14, Senthil Kumar et al., “Earthquake Recurrence and Rupture Dynamics of Himalayan Frontal Thrust, India”, in Science[1], volume 294, number 5550, , pages 2328–2331:
- Displacement on F3 was followed by continued accumulation and onlap of the fine-grained sands of unit 3 on the footwall and development of soil Qb2.
Synonyms
[edit]Verb
[edit]onlap (third-person singular simple present onlaps, present participle onlapping, simple past and past participle onlapped)
- (geology) To form an onlap.
- 1998 March 6, Roger J. Phillips, Vicki L. Hansen, “Geological Evolution of Venus: Rises, Plains, Plumes, and Plateaus”, in Science[2], volume 279, number 5356, , pages 1492–1497:
- Elsewhere, many of the youngest volcanic plains units onlap tesserae at crustal plateau boundaries.