This paper presents an extensive review of the process of ghost-rock karstification and
highlights its role in the formation of cave systems. The process integrates chemical …

Sandstones form the backdrop to some of the world's most spectacular scenery, and are
found all over the planet and in all climates. Following on from the authors' successful 1992 …

Siliceous speleothems can be formed in sandstone caves. Recently, opal “biospeleothems”
have been found in the World's largest cave in Precambrian sandstones on the Chimantá …

Venezuelan table mountains (tepuis) host the largest arenite caves in the world. The most
frequently used explanation of their origin so far was the “arenization” theory, involving …

Coralloid-type speleothems were recorded on the ceiling of the Ana Heva lava tube in
Easter Island (Chile). These speleothems were morphologically, geochemically and …

Water trickling through the discontinuities of granitic massifs causes a slow chemical and
physical weathering of the rock related to biological activity. The weathered materials are …

Existem algumas formas de relevo em rochas não carbonáticas que se assemelham ao
relevo normalmente encontrado no calcário. Tais formas são carste, a partir do momento em …

It is generally considered that karst aquifers have distinctly different properties from other
bedrock aquifers. A search of the literature found five definitions that have been proposed to …

The genesis of calcite coralloid speleothems from Lamalunga cave (Southern Italy) is here
investigated from a purely petrographic perspective, which constitutes the basis for any …

Karstification processes in sandstones of the Furnas Formation, Silurian to Devonian of the
Paraná Basin, have been described since the mid-twentieth century. However, some …