|Figure 8-2. Relics of aragonite (e.g., red arrows) in calcite, as seen in plane-polarized light (A) and cross-polarized light (B). These relics are presumably the remnants left by diagenetic conversion of aragonite to calcite. Blue arrows point to zonation of calcite, which is an indicator of diagenetic calcite as well. "V" indicates a void not completely fill by calcite.
Photomicrographs were taken in plane-polarized and cross-polarized light; field of view of each is 1.1 mm wide. DeSoto Caverns, Alabama, U.S.A.; Sample 95b; thin section 95b2. Sample collected by Dr. George A. Brook.
|Back to the Table of Contents of the Atlas of Speleothem Microfabrics.|