Not a visible tephra layer: cryptotephra. 346–351 cm depth in core. Colourless, highly vesicular, bubblewall and non-vesicular angular glass shards. Their maximum measured length is 100 microns, the median being <45 microns. About 60% of the shards have characteristic feldspar microlite crystals up to 20 microns long, occurring in all types of glass shards
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 G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.