Elusive Golden Spikes: When stratigraphers face the technical impossibility of specifying a GSSP in the field

Granier, Bruno R.C.

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Figure 1: A) The Golden Spike (of the base) of the Maastrichtian at Tercis-les-Bains (Odin & Lamaurelle, 2001), Les Landes (SW France). Photo courtesy of Gilles Serge Odin; B) The Golden Spike (of the base) of the Hauterivian at La Charce (Mutterlose et al., 2021), La Drôme (SE France). Photo courtesy of Stéphane Reboulet (30/08/2024).