Locality 97, Mud Butte, small butte NE of Freemans Ranch near road. It's cap of oyster-coquina Sandstone has collapsed and only chunks of it remain on slopes. Cochine features oysters, high-spired snails and corbiculids; also found fragment of ammonite, smaller snails and mytilloid. See collection. A950 A951 The caprock was Calgate, probably high calgate. Bedrock in butte is the banded type that lies between Calgate sand layers in loc. 96. Slopes to E show lower banded beds and upper Timber Lake stuff just coming in. To south the first large gully heading in toward road has lower banded beds (from which Roger collected) and upper Timber Lake which is a clayey vfg sand that weathers yellowish gray at upper 10't, light grey below and has rustyto RB worth calc concs near top. Further south just before Freemans road dips into valley of RedCozt Creek, a bentonite is exposed S. of road not too far below the Timber Lake type concs. No good section of T.L. and down is readily usable but with proper control and plenty of sweat a composite might be put together in this area. 41