Pabian, R. K., Mohlman, D. R.,Vasek, R. W., Root, R., 1994. Common Nebraska Rocks, A Collection with Explanatory Notes (GIM-76a) 1 pp., size 8" x 4.5" box. Description: This "advanced" rock collection is designed for advanced scientific study at the post-high school level. It has 18 samples: non-marine portion of a nearshore shale; non-marine portion of a nearshore shale with sandstone lenses; marine shale portion of nearshore shale; transgressive limestone; offshore shale; limestone-lowermost portion of regressive sequence; limestone-uppermost portion of regressive sequence; continental shale; continental sandstone; marine shale; marine limestone; continental limestone; quartzite; volcanic ash; dune sand; blue agate; prairie agate; and Holdrege Soil (the state soil). The box measures 8" x 4.5." A descriptive brochure is included. Comes with a four-page 8.5" x 11" (photocopied) brochure.