Figure F14. Close-up photograph showing basalt at 60.5-74.5 cm recovered near metamorphosed sedimentary rock with burrow structures at 66-74.5 cm (interval 198-1213B-30R-4, 60-74.5 cm). This interval is interpreted as the fragmentary record of a contact between a sill (chilled margin) and country rock (contact-metamorphosed sediments) between two overlying and underlying intervals (Subunits IVA and IVB) of diabase (not shown here).

Figure F14. Close-up photograph showing basalt at 60.5-74.5 cm recovered near metamorphosed sedimentary rock with burrow structures at 66-74.5 cm (interval 198-1213B-30R-4, 60-74.5 cm). This interval is interpreted as the fragmentary record of a contact between a sill (chilled margin) and country rock (contact-metamorphosed sediments) between two overlying and underlying intervals (Subunits IVA and IVB) of diabase (not shown here).