Field Notebook: CO 1951a
Page 55
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Transcription
R Turkey Creek C (cont.) 2,4 Shzley Clay, dk grzy plastic, locally silty beds 11,4 Irregularly bedded siltstone & fine ss, Bown to buff weath, some of siltstones mass. w weather lke gray. 1.6 Silty Shzley clay, dk gray, interbedded with siltstone. 5.0 Siltstone minor fine ss as above (17,4) shzley in lower foot argillaceous streaks throught. 2,6 Silty gray to clk grzy clay 6.0 Plastic siltstone thin irreg beds with Shzley partings & thin beds, Middle 1.5 feet considerable silty shale with interbedded siltstone. Thin bed. fine to med gr. ss at base, Fe stain. Disconct ? 7.0 Sandstone massive to cross bedded, whole cross lamin. tcol Disconform with 4.10 Interbedden fine ss argillaceous siltstone, friable, bzsol 6513 to highly silty sh, whole weaths lke gray with ss beds brownish & showing X lam. Massive X 10m fine ss weaths lke gray 6.1 to buff. Discon local. 9.6 Siltstone to fine ss argillaceous massive weathers lke gray to white, hard but crumby, couch to sub couch fracture. Fe stain on fract planes. 30,6 Massive X 12m. lke gray fine to medium gr zined ss. Med grained with white particles - trav clay? locall bones in tve form cgl of ss pellets, rounded, same as matrix. Crops as 25