ASSOCIATION OF STATE GEOLOGISTS ITINERARY Monday, October 1. Leave Port Jervis, 8 A. M. for Otisville, N. Y. Railroad cut and quarry in the Shawangunk Conglomerate (Oneida sandstone of early writers). Clarke found a Eurypterid fauna in thin black shales intercalated in the conglomerate beds and referred the formation to the Salina. Later Schuchert found the typical Medina fossil Arthrophyus in quarry. At east end of cut the unconformable contact of the Shawangunk (Silurian) grit on the Martinsburg (Ordovician) shale is exposed. Leave Otisville 9 A.M. Return to Port Jervis, thence to Nearpass section, Tristate, at 9:45 A.M. Nearpass Section-Base Upward 1. Pocino Island shale. Buff colored or yellow calcareous shale.- 200 ft. thick in Pennsylvania at type locality (I. C. White). Salina age. 2. Bossardville limestone. Fine grained, thin bedded, gray or blue limestone, the so-called ribbon limestone of Cook. Small ostracods and a few other fossils in upper 4 feet.-Salina age- Correlated with the Tonolway of Pennsylvania (U.S.G.S. Prof. Paper 108 K). 3. Decker limestone. 3a. Highly fossiliferous, earthy, somewhat sandy limestone. 3b. Hard, bluish-gray limestone with some thin shale beds. 3c. Yellow, shaly, platy limestone, with occasional thin beds of bluish crystalline limestone near top. (Beds 3a-3c are correlated by Hartnagel with the Wilbur limestone of New York). 3d. Reddish limestone - a crystalline gray limestone with many fragmentary fossils and red oolite grains suggestive of the lean Clinton ore at Hemlock Creek, Bloomsburg, Pa. (Van Ingen)- the Ptilodictia zone of Weller. Large bryozoans abundant. 3e. Fissile yellow shale.