Figure F7. Color close-up photograph of interval 183-1136A-14R-1, 97-115 cm, showing bivalve shell material and other fossil detritus mixed with zeolitic silty clay sediments, indicating reworking. Alteration has resulted in green iron-rich clay (nontronite and/or saponite) and mica (celadonite) in halos around fossil fragments in the permeable silt layers and along fractures.