Page:Field Notes of Junius Henderson, Notebook 4.pdf/26



R.R. cut at, with 6 foot kitchen midden.

Miocene overlaid by San Pablo Neocene unconformably, all capped by Pleistocene brecciated shale.

late Pliocene. I found apparently some on S. end of, a higher horizon than Pliocene exposure on east face.

Bluff capped by Pleistocene gravels and sands. Prof. Wm. E. Ritter, Director, Biol. Station