The early Holocene Saksunarvatn tephra found in lake sediments in NW Germany   总被引：3，自引：0，他引：3  

JOSEF MERKT  HELMUT MÜLLER  WOLFGANG KNABE  PETER MÜLLER  THOROLF WEISER 《Boreas: An International Journal of Quaternary Research》1993,22(2):93-100

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.  相似文献