[DSRP Evidence](https://dsrpevidence.org/)

# Exhumation of Grand Canyon's basement along the Great Escarpment of Laurentia

Gernon et al., 2026, Geology — Geology

Patterns: [Distinctions](https://dsrpevidence.org/pattern/distinctions), [Systems](https://dsrpevidence.org/pattern/systems), [Relationships](https://dsrpevidence.org/pattern/relationships)

## In short

A continent-scale rift-flank system (the whole) explains spatially varying local erosion depths (the parts) through a distance-dependent causal relationship, framed against a sharp presence/absence boundary in the rock record known as the Great Unconformity.

## What they found (results)

Landscape-evolution models show erosion reached about 8 km near a ~750-800 Ma rift-flank escarpment spanning Laurentia and fell to 2 km or less roughly 200 km away, explaining the variable depth of missing time beneath the Grand Canyon's Great Unconformity.

These researchers were not testing DSRP. The finding is theirs; the correspondence to DSRP is drawn by this site.

[Source](https://doi.org/10.1130/G55133.1)