Science / Geology / Paleocurrent Map: A map that shows the directions of currents at the time of sediment deposition. These directions can be determined through the study of cross bedding, ripple marks, tool marks and other sedimentary st MORE
Science / Geology / Paleogeographic Map: A map that shows the distribution of sedimentary environments at a specific time in the past. These maps are made by studying the rock record to correlate rock units that were deposited at the same ti MORE
Science / Genetics / Long-Range Restriction Mapping: Restriction enzymes are proteins that cut dna at precise locations. Restriction maps depict the chromosomal positions of restriction-enzyme cutting sites. These are used as biochemical 'signposts,' or MORE
Science / Geology / Topographic Map: A map that shows the change in elevation over a geographic area through the use of contour lines. The contour lines trace points of equal elevation across the map. MORE
Science / Tides and Currents / Tidal Bench Mark State Index Map: A state map which indicates the locations for which tidal datums and tidal bench mark descriptions are available. MORE
Science / Geology / Contour Map: A map that shows the change in value of a variable over a geographic area through the use of contour lines. For example, a contour map of elevation has lines that trace points of equal elevation acros MORE