Stel et al. claim that pitted cobbles occur not only in the vicinity of the impact structures (northeastern Spain), but also in a large area extending west and south of these structures. This agrees with our own observation that pitted cobbles occur up to ∼75 km distance from the impacts (e.g., Monasterio de Piedra, Sierra de Albarracin). We further note that the conglomerates are homogeneously endowed with these pitted cobbles. These observations are compatible with a widely homogeneous dynamic shock stress field around the impacts but seem to us to be inconsistent with pressure dissolution initiated by locally varying tectonic...

First Page Preview

First page PDF preview
You do not currently have access to this article.