Figure F3. Close-up photographs. A. Gray volcanic ash layers in Subunit IA. B. High-angle lamination, probably due to rotational slumping in Subunit IA. C. Characteristic features of Subunit IC including cross-lamination of silty layers and a gray clayey layer. D. Dark D-phosphate concretions (probably hardground) in Subunit IC. E. Yellow dolomite lens replacing a former silt-sized sediment in Subunit IC. F. Cross-lamination and gray clayey layer in Subunit IIB. G. Erosional contact between cross-laminated sand to silt-sized layers (above 47 cm) and diatom-rich silty clay (below 47 cm) in Subunit IIB.

Figure F3. Close-up photographs. A. Gray volcanic ash layers in Subunit IA. B. High-angle lamination, probably due to rotational slumping in Subunit IA. C. Characteristic features of Subunit IC including cross-lamination of silty layers and a gray clayey layer. D. Dark D-phosphate concretions (probably hardground) in Subunit IC. E. Yellow dolomite lens replacing a former silt-sized sediment in Subunit IC. F. Cross-lamination and gray clayey layer in Subunit IIB. G. Erosional contact between cross-laminated sand to silt-sized layers (above 47 cm) and diatom-rich silty clay (below 47 cm) in Subunit IIB.