|
Photograph -
J.E. Smith
|
Calcite flowstone
curtains (and a column)
in the Upper Oxbow Series, Ogof Ffynnon Ddu, South Wales.
Here the water rich calcite has run
down a crack in the roof of the cave passage to form a stalactite which
is thin and folded like a set of curtains. When a light is shone
through a curtain it reveals bands of rich colour formed by mineral
traces in the calcite. |
