Figure F21. Close-up photograph of glauconite-bearing chalk with centimeter- to decimeter-scale color banding defining lithologic Unit IV (interval 202-1236C-23X-02, 10-47 cm).

Figure F21. Close-up photograph of glauconite-bearing chalk with centimeter- to decimeter-scale color banding defining lithologic Unit IV (interval 202-1236C-23X-02, 10-47 cm).