Figure 1
From: Microbial mediation of complex subterranean mineral structures
(a) A bouquet of Blue Gallery speleothems (BGS)—the unusual speleothems of Asperge Cave. (b) Astonishing “bight” connecting two points ~50 cm apart from each other. The arrow indicates a “bridge”. (c) BGS splitting point (detail of panel b). (d) Two branches meet and merge in the center of the room forming a bight (detail of panel a). (e) Detail of the panel d showing the “coalescence”, the arrows indicate the growing direction of the two branches. (f) Typical “welding point”, the arrow indicates the growth direction of the coating (i.e. against gravity). Photos by: Michel Renda, Nicola Tisato and Tomaso R. R. Bontognali.
