Calderas
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Outlines of calderas associated with the Yellowstone Plateau Volcanic Field.</SPAN></P><P><SPAN>This is a layer that was derived from the geology coverages of Plate 1, Plate 2, and Plate 3 in the Christiansen (2001) Professional Paper.  LTYPE is original value from the coverages.</SPAN></P><P><SPAN><SPAN>Data were minimally modified as necessary (e.g. clipped to spatial extent, desired features extracted, projected to a different coordinate system, attribute fields renamed and/or added, symbolized) by the Wyoming State Geological Survey (WSGS) in April, 2020 for simplified display on the interactive Geology of Yellowstone Map. The WSGS has not formally reviewed or quality-controlled these data; users are encouraged to consult the original data source.</SPAN></SPAN></P></DIV></DIV>
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