Field Notebook: CO 1952b
Page 143
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
13. 14. Main bed cut out here by local channel Channel lifts main bed in 2g mtr. 15 On bare N end of this hogback segment, relations of clay beds in Holmer mine clearly shown. Mainbed in with 3'+ ss separating it from Flinty clay above. Lower split below main bed also in here, but is siltstone+ silty siltstone. Above flinty bed is massive x/2cm ss. Flinty bed prob: 1 of "little 3" Base Top massive first Glen (Kossler memb.) 14.2, About 3' silty gray clay at base, then siltstone grading up Lower split into ss with 1-6 silty. Upper 1.5 to 2' is hard bed with ripmarked top-surface (base main bed. 7.9 Main clay bed, basal bentonite then 1" silt-stn., then silty clay 3+ the 1.5 sits, rest more silty clay sh. 3 to 6.9 Evenbedded to clay bru. weathers, parkings silty sh. 10+ clay bed silty plastic clay gray stained yellow + pink. Siltstone beds basal 2 ' Sandstone, Massive X-lam. Note along strike to S, lower split contains @ bentonite bed.