The early Holocene Saksunarvatn tephra found in lake sediments in NW Germany |
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Authors: | JOSEF MERKT HELMUT MÜLLER WOLFGANG KNABE PETER MÜLLER THOROLF WEISER |
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Institution: | Geological Survey of Lower Saxony. Postfach 510153, D-3000 Hannover 51, Germany;Federal Institute Geosciences and Natural Resources. Postfach 510153, D-3000 Hannover 51, Germany |
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Abstract: | A basaltic tephra layer consisting of brownish-olive glass shards. and about 0.2 mm thick. was found in cores from four lakes in northwest Germany. According to pollen analysis it was deposited during the early Boreal period (corresponding to about 8700 BP). The petrographic properties. the geochemical composition and the age agree with those of the Saksunarvatn tephra. which was first found on the Faroe Islands. The position of the tephra layer in the pollen stratigraphy and in the absolute time-scale is discussed. Procedures for locating the tephra in other cores are suggested. |
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