Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Wednesday Sep. 12 - 1934.
Of Pre-Cambrian age, and shallow syncline seems to actual contact between the Call Grey slates and the Pre-Cambrian ochre.
The White Marl diff. (120-75') looks very much like the grey Ellenham diff. (40-150')
The forms found in the 1s are more like Ellenham, all fragments, but Ellenulus is present (form by the reticulate character of the surface), and as fragments is the commonest form. The other distinguishable forms are worm tubes about ½ inch in diameter, supra-metamorphous and about one inch in length. The shells are thicker than those of Ellenulus. Also found to our a fragment of Retofora. Another brachiopod is present but judging Oriscioia has apparently more cross of calcareous.
Prof. Clark demonstrated to me the various formations and that the succession was about described. The shale are somewhat metamorphosed but the structural conditions are complicated; apparently by superimposition.