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Fig. 6. Internal features of some Cayman stalactites. (a) Transverse cross-section through stalactite from old cave near
Breakers (Fig. 1) showing central 'soda-straw' (SS) surrounded by outward expanding laminated 'stromatolitic' columns
encased by calcite. (b, c) Enlarged views of laminated 'stromatolitic' columns formed of micrite. (d, e) SEM
photomicrographs of hollow filamentous microbes encrusted with 'spiky' calcite crystals, from 'stromatolitic' columns
shown inFigure 6a. (f ) Thin-section photomicrograph of showing irregular-shapedmicritic columns (arrows) in stalactite
from Old Man Village cave. Note deflected of outer lamina around the columns. (g) Thin-section photomicrograph
showing small non-laminated columns formed of dark grey-black micrite in stalactite from Old Man Village cave.
(h) Thin section photomicrograph showing diffuse column of micrite in stalactite from Old Man Village cave.
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