Rb-Sr isochron framework: (⁸⁷Sr/⁸⁶Sr) = (⁸⁷Sr/⁸⁶Sr)₀ + (⁸⁷Rb/⁸⁶Sr)·(e^{λt} − 1)

Layer 2 — Chemistryin the geochemistry subtree

The Rb-Sr isochron dating framework — arguably the single most important geochronometric tool for Precambrian rocks and meteorites, derived from the Nicolaysen 1961 co-magmatic cogeneticity insight. For a suite of co-genetic minerals…

Related concepts

N(t) = N₀·exp(−λt); t_{1/2} = ln 2 / λ (universal isotope clock)
Rb-Sr slope: m = e^{λt} − 1; m|_{λt small} ≈ λt; m|_{t = t_{1/2}} = 1
Linear map

Explore Rb-Sr isochron framework: (⁸⁷Sr/⁸⁶Sr) = (⁸⁷Sr/⁸⁶Sr)₀ + (⁸⁷Rb/⁸⁶Sr)·(e^{λt} − 1) on the interactive knowledge graph →