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Identification of a bentonic ash layer by crystal morphology of its zircon population (Bed 79, Hasselbachtal, Rheinisches Schiefergebirge)
The highly altered volcanic ash layer of Bed 79 in the Hasselbachtal Section, Rheinisches Schiefergebirge, close to the base of the Carboniferous, contains a population of magmatogenic, idiomorphic zircons with distinctive crystal morphological features. The ash was air-borne and at Hasselbachtal was far from its source. The ash layer is therefore likely to have had a wide original distribution and should be present in other rock successions of the same age deposited in a low energy hydrodynamic environment.
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A propos de : Josef Winter
Geologisch-Paläontologisches Institut der Universität Senckenberg-Anglage 32-34, 6000 Frankfurt a.M. 1.