SP-44 Geologic Excursions to the Rocky Mountain and Beyond, Field Trip Guidebook for the 1996 GSA Annual Meeting, Denver Download Publication Details Twenty-eight field trip guides to parts of Colorado and surrounding states, compiled for the 1996 Geological Society of America’s Annual Meeting in Denver. Originally in the form of a CD, this collection of field trip guides provide a fascinating snapshot into the wide range of geoscience research that is done across the state and region. The individual guides provide an interesting framework for learning about Colorado’s complicated geological history in the field. SP-44 contains the full set of guides, individual PDF guides may also be downloaded separately (see various OF-96-04 field trips). Digital ZIP download. SP-44D Citations Thompson, Ren A., Mark R. Hudson, and C. L. Pillmore, eds. SP-44 Geologic Excursions to the Rocky Mountains and beyond: Field Trip Guidebook for the 1996 Annual Meeting, Geological Society of America, Denver, Colorado, October 28-31. Special Publications, SP-44. Denver, CO: Colorado Geological Survey, Department of Natural Resources, 1996.