Figure 7-3. Seven layers of calcite (C). Most of these layers are flat-topped, but the third from the bottom has some euhedral crystal terminations, which may be the result of a thick film of water on the surface of the growing stalagmite. A higher-magnification view shows the area in the red rectangle.
     Photomicrograph was taken in plane-polarized light; field of view is 2.0 mm wide. Drotsky's Cave, Ngamiland, Botswana; Stalagmite BDS1 (DS87) ; thin section BDS5.5. Sample collected by John Cooke and George Brook.
  Speleothem Image
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