Vulkanische as in het Eoceen bij Enschede

During field investigations in the basal Eocene east of Enschede in the eastern part of the Netherlands traces of volcanic ash (characterized by slaggish or spherical particles of a blackish glassy substance with a diameter of about 0.1 millimeter) have been found in a few borings. Due to the absence of microfauna a precise age determination could not be established but they definitely date from the Eocene. The ash originates from the Eocene volcanic eruptions in the present day Skagerrak.