(4) 7.0 - ? Silt, slightly clayey, brownish gray, some v.f. q sand grains locally, grades upward into soil zone under top of bluff. Interval of concretions between top of unit 2 and top of unit 3 -- about 9' thick, appears to contain all of Timber Lake fauna here. Beds below are unfossiliferous. Section 2. - Section cleaved through popcorn beneath big bountite. (1) 23.0 Silt, gray, clayey, blocky, some small streaks and blobs but mostly fairly uniform, becomes somewhat more clayey in lower 4' and in upper feet. Single small ovoid calc conc. found 16 ft from base. At top is (2) 0.5 ft of bentonite with cone-in-cone cone. Unit 1 of section 1 sample 1 = 5 to 9 ft above base 2 = 12 to 14 ft " " 3 = 16 to 19 ft " " 4 = 20 to 22 ft " "