52 min 30 sec . Maps showing sedimentary and biological environments, depth to Pleistocene bedrock, and Holocene sediment and reef thickness from Molasse Reef to Elbow Reef, Key Largo, south Florida, by B. H. Lidz, E. A. Shinn, M. E. Hansen, R. B. Halley, M. W. Harris, S. D. Locker and A. C. Hine. Prepared in cooperation with the University of South Florida. 12 min , long 80 deg 16 min to 80 deg 20 min . Maps include aerial and underwater photographs, cross sections, and seismic profiles.
Environmental map depicts different ecological communities and associated sediment or reef type.
Maps most useful to resource managers and scientists working in the area. Bedrock geologic map of northern New Jersey, by A. A. Drake, Jr., R. A. Volkert, D. H. Monteverde, G. C. Herman, H. F. Houghton, R. A. Parker and R. F. Dalton. Prepared in cooperation with the New Jersey Geological Survey. 30 sec . Late Quaternary surface faulting on the Cheraw Fault, southeastern Colorado, by A. J. Crone, M. N. Machette, Lee-Ann Bradley and S. A. Mahan. 1997.