Field Notebook: SD, CO, WY 1967
Page 107
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Transcription
(2) cont. (7) 7,0 Shale, still with few Fe-quartzite boulders, pebbly, Loc gray feldarsenica #7-3.2 from base. (8) 0,2 Bentonite, loc with hard Fe stained layers in top of #7 below it. (9) 14,0 Shale, pebbly, with scattered red brown weathering to shaly cone masses, some boulders flattened frets. A few IS (weather gray quartz) coves with clinc in upper 3 ft but most of these start in base #10 #8=3.8 from base, #9-3.2 from top. (10) 25,0: Shale,(see below). At base first widespread layer layer first c-in-c and pebbly red and, locally, septarian is cone masses - this +/- loc. with cones protruding into (9) below. Locally capped by thin bentonite strata. Above basal cone layer scattered similar masses without obvious persistent layers though may be widespread cones in zones about 12-15 above base. At top, seems to be fairly persist, dominantly septarian cones quartz wrapping, moderate (1/2/dirty) #10 -9.2 from base #11-16 from base #12 - 20,6 from base