evidence now shows that the Jurassic-Triassic boundary is within the Dinosaur Canyon Memberof locally present in southwestern Utah, but evidence is not conclusive if these sandstone andconglomerate beds the Blue Mesa Member, or if they... JM Hayden 被引量: 0发表: 2011年 A GIS GEOLOGIC MAP CO...
Geological Survey topographic map, were obtained from the Iowa Geographic Map Server (http:// ortho.gis.iastate.edu/). The soil survey map and index were obtained from the University of Iowa Geoscience Library. RESULTS AND DISCUSSION Species Diversity A total of 337 species of vascular plants,...