Entstehung und Flora des Trasses im nördlichen Laachersee-Gebiet

Hans-Joachim Schweitzer
The depositional features of the trass as well as the preservation and position of fossil plants in it indicate a complex genesis of the trass. At its base there is a thin layer of volcanic dust. Above this layer of dust, however, the trass can be described mainly as deposit of volcanic events similar to glowing clouds. The Alleröd-flora of the trass is boreal with Betula pubescens Ehrh., Pinus silvestris L., Prunus padus L. and...