The Carlisle Center is distinguishable by the black band of almost pure chert in the middle of buff-colored, silty to sandy agrillaceous limestone.

While there are no fossils present in the black band, there are ichnofauna (trace fossils in sediment) such as Chondrites burrow holes that have been pyritized over time.  Other fossils include Cruziana, Fustiglyphus, and Zoophychus.

Bordeaux, Yvette.  "Field Trip to the Hudson Valley Region, New York State, Fall 2001". 

Miller, Rehmer, .1982.  “Trace Fossils in Interpretation of Sharp Lithologic Boundries, an Example from the Devonian of New York.” Geologic Society of America 11, no 1 :45.

La Porte, Leo, 1969. Depositional Environments in Carbonate Rocks, ed. Friedman, G.M. no. 14. 98:119.

Liz is a CGS student majoring in  Environmental Studies with a focus in geology.