Field Notebook: CO 1952b
Page 77
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Transcription
Deer Cr. Area - Resume Clay beds - Main bed 14 at mineable thickness only in 3 small areas marked in red along green line. At AIN-48-93, #13'/5' and at just N. Deer Cr. road. Small beds - none of economic note. Dakota clay - North of Deer Cr. best exposure is just N. Deer Cr. Road, remainder of outcrop N. to Massey draw is approx. with no info on clay - other than that it can't be very thick or it would show. south of Deer Creek indication that bed may warrant prospecting. SS on top things throwing it way down slope very near Gueros contact - thus accessible. At AIN-48-95 #4 bed exposed & consists of shale & platy siltstones in lower part. This outcrop may be worth trenching. Stratig. - Disconformity Deer Cr. section reexamined but little new info. - possibility discort. is on top massive calcic ss or is in it. At section AIN-48-93 #18 the 3rd SS is double (as at Plainview) & 4th shale is present & a basal SS is present. Further S. AIN-48-95 #3 similar section with 2 foot basal SS. :. Great thickening of 3rd ss between Deer Creek section and hogback just S of creek. This thickening can be seen taking place on N. wall of Deer Creek gap. Question of whether a Dakota-like lense comes in locally under the disconformity (as at Cazen) is worth investigating.