-158- Section 11 Measured up a gully which heads in a slight reentrant near the western end of Leonard Mountain. Units 1 and 2 dip 10° S and are truncated by higher units which dip about 7° NW. Top of ridge Thickness (feet) Leonard Formation 15. Limestone, medium to dark gray, thin bedded, siliceous bands near top of most units . . . . . . . . . . . . not measured 14. Siltstone, orange-brown weathering, many limestone bands are completely replaced by chert . . . . . . . . . . . . . . . . 32 13. Limestone, light gray, numerous chert pebbles, 4 to 6 foot beds, but beds thicken and thin along strike . . . . . . . . . . 46 12. Siltstone, orange to orange-brown weathering, some beds of sandstone, many thin siliceous bands . . . . . . . . . . . . . . . . . . 73 Lenox Hills Formation 11. Limestone, light gray, calcirudite near at top, chert replacement common, 2 to 4 foot beds . . . . . . . . . . . . . . . 120 10. Covered, probably limestone and shale . . . . 41