Figure F5. Close-up photograph of boundary between a whitish periplatform sediment (32-38 cm) and a layer of dark phosphatic nodules (interval 194-1198A-23X-1, 19-38 cm; 203.19-203.38 mbsf). This layer is interpreted as a hardground. The texture within each individual nodule is a skeletal packstone dominated by planktonic foraminifer and minor amounts of small benthic foraminifers.

Figure F5. Close-up photograph of boundary between a whitish periplatform sediment (32-38 cm) and a layer of dark phosphatic nodules (interval 194-1198A-23X-1, 19-38 cm; 203.19-203.38 mbsf). This layer is interpreted as a hardground. The texture within each individual nodule is a skeletal packstone dominated by planktonic foraminifer and minor amounts of small benthic foraminifers.