A New Classification of Eologlyptoliths

Abstract

This paper introduces a new classification system for eologlyptoliths, a term coined by J. Dylik to describe wind-worn rock fragments. The author proposes this new system because the older term "vetrogrannik" (wind facetted stone) does not encompass all the varieties of eologlyptoliths, especially those that lack distinct facets or edges. The paper defines three main types of eologlyptoliths: polished and varnished surfaces, miniature pits or honeycomb structures, and facetted stones. The author details the formation processes, attributing the shapes to the erosive action of wind-blown mineral particles in arid, semi-arid, and Pleistocene periglacial environments. The paper also highlights the presence of a "desert varnish" coating on many of these rock fragments, which can obscure their original color and appearance.