Not a visible tephra layer: cryptotephra. 233–239 cm depth in core. Consist of colourless vesicular glass shards, with a medium diameter of ca. 50 microns.
Linking the North Atlantic to central Europe: A high-resolution Holocene tephrochronological record from northern Germany
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.