Seasonal microclimate control of calcite fabrics, stable isotopes and trace elements in modern speleothem from St Michaels Cave, Gibraltar - Tufas and Speleothems: Unravelling the Microbial and Physical Controls - page 320

Fig. 2. Plan of the St. Michaels Cave systems based on the survey by Shaw (1954) and figures from Rose & Rosenbaum
(1991). Locations of monitoring sites and features discussed in the text are shown.

to have no impact on CO 2 levels and ventilation
of NSM as a whole (our unpublished data).
Deeper within the NSM system very weak air

flow patterns can be detected using smoke tracers,
but the dramatic seasonal fluctuations in CO 2
levels described by Mattey et al. 2008 and in