Assessment of geologic mapping techniques at Aristarchus plateau, the moon
Lough, Trevelyn Anne
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I created 3 maps of the Aristarchus plateau region on the Moon, a volcanic complex on the near side, using different mapping techniques in ArcGIS to assess information provided by both morphologic and compositional data sets. The map areas cover 20°-30oN and 45°-58oW. The 3 mapping techniques are: (1) giving more weight to Clementine compositional data; (2) using only morphologic data (Lunar Orbiter IV and V an Apollo 15 photographs); and (3) synthesizing the first two maps to maximize pertinent information while consolidating redundancies to create the most geologically accurate map. I find relying too heavily on compositional data can result in the mapping of surficial contamination rather than underlying geology whereas using only morphologic data can result in the separation or consolidation of units based on resurfacing processes rather than formational processes. The geologic map that transmits the most valuable information uses all available data sets. I also infer the geologic history of the region and conduct preliminary studies on possible controls of sinuous rille orientation trends within the map area. I measure trends in orientation of rille meanders and find that slope primarily controls rille orientation, but local and regional structure also contribute to orientation trends.