Principles of Stratigraphy
Geology · Year 12 · Geological Time and Palaeontology · 3.º Período

Principles of Stratigraphy

Apply Steno's laws, including superposition and cross-cutting relationships, to determine the relative ages of rock strata. Understand the significance of unconformities in the geological record.

National Curriculum Attainment TargetsEduqas Geology AS/A-level: 3.1a Relative datingEduqas Geology AS/A-level: 3.1b Stratigraphic principles

About This Topic

Apply Steno's laws, including superposition and cross-cutting relationships, to determine the relative ages of rock strata. Understand the significance of unconformities in the geological record.

Key Questions

  1. How is the principle of superposition used to date rocks?
  2. What does an unconformity represent in geological time?
  3. How do cross-cutting relationships help establish relative age?

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