Figure F21. Microfacies of radiolarian nannofossil clayey limestone from upper Subunit IIIB (Sample 192-1186A-27R-1, 37-39 cm; late Albian) (field of view = 1.4 mm; plane-polarized light; photomicrograph ID# 1186AS_18). Planktonic foraminifers are not preserved, and the matrix is partially silicified. Carbonate content is ~30%.

Figure F21. Microfacies of radiolarian nannofossil clayey limestone from upper Subunit IIIB (Sample 192-1186A-27R-1, 37-39 cm; late Albian) (field of view = 1.4 mm; plane-polarized light; photomicrograph ID# 1186AS_18). Planktonic foraminifers are not preserved, and the matrix is partially silicified. Carbonate content is ~30%.