Figure F14. Zeolitic chalk bands in the lower part of Unit II (interval 192-1186A-13R-1, 50-63 cm; early Paleocene). Bioturbation is abundant. The darker bands (e.g., 51-52 and 54-55 cm) have a greater concentration of zeolite and other noncarbonate components. These bands preferentially developed a microflaser texture with small chalk nodules during compaction and pressure-solution diagenesis. Some vertical mottles crosscut microflaser features, implying these mottles have a postcompaction origin.

Figure F14. Zeolitic chalk bands in the lower part of Unit II (interval 192-1186A-13R-1, 50-63 cm; early Paleocene). Bioturbation is abundant. The darker bands (e.g., 51-52 and 54-55 cm) have a greater concentration of zeolite and other noncarbonate components. These bands preferentially developed a microflaser texture with small chalk nodules during compaction and pressure-solution diagenesis. Some vertical mottles crosscut microflaser features, implying these mottles have a postcompaction origin.