Sandbian

Age

  • Base: 458.4 Ma (GTS 2012), 460.9 (GTS 2004)
  • Top: 453.0 Ma (GTS 2012), 455.8 (GTS 2004)
  • Duration: 5.4 Ma (GTS 2012), 5.1 (GTS 2004)

Global stratotype section and point (GSSP)

  • Locality: Sularp Brook, (55.7137°N, 13.3255°E )
  • Boundary level: 1.4m below a phosphorite marker bed in the E14b outcrop
  • Correlation events: Graptolite FAD Nemagraptus gracilis
  • Status: Ratified 2002, Episodes 23/2, p. 102-109, 2000

GSSP for the Sandbian Stage

GSSP for the Sandbian Stage, and Upper Ordovician, at Fågelsång, southern Sweden. Prof. S. Finney fixing the golden spike at the boundary level, coinciding with the FAD of Nemagraptus gracilis. Photo courtesy to Stan Finney.