Photomicrograph was taken in plane-polarized light; field of view is 2.2 mm wide. Yangzhipo Cave (25.5N, 106.3E), ca. 30 km southwest of Guiyang city, Guizhou, China; Stalagmite CH; thin section CH4. Sample kindly provided by Mr. Hong-lin Xiao.
| Figure 4-4. Microcrystalline calcite zone (M) above aragonite (A) and below calcite (C). Note detrital grains (arrows) within microcrystalline calcite. The presence of such grains suggests that some if not all of the microcrystalline calcite may be detrital as well. Photomicrograph was taken in plane-polarized light; field of view is 2.2 mm wide. Yangzhipo Cave (25.5N, 106.3E), ca. 30 km southwest of Guiyang city, Guizhou, China; Stalagmite CH; thin section CH4. Sample kindly provided by Mr. Hong-lin Xiao. |
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