Troll:
marble slabs - fully submerged
(1) submerged in the inlet pool - no measured
weight gain. (2 and 3) slab with highest weight gain (note that scale
in 1 and 3 are equal);
also not ethe diatom in (8)
(1) 
(2) 
(3) 
(4) 
(5) 
(6) 
(7) 
(8) 
Troll: endolith from old terrace
Maps of Ca/Mg and Ca/Si on burried filament; Note
the nice euhedral Cc overgrowing the biofilm - indicating that the film
was trapped before the rock dried out
(1) 
(2) 
(3) 
Maps of Si (green) occuring in trapped -
dead bio-layer (??) in travertine (pure Cc is pink) .
Growth direction: UP (North)
Si and Mg covary strongly but Si is easier to
map due to more counts.
(1) 
(2) 