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(Table S1) Details on modern and paleo notch measurements
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Algerita Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Baker Spring Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Bear Hollow Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Blucher Mountain Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Brady Mountain Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Buffalo Knob Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Richland Springs Quadrangle ; Digital US Topo Maps: 7.5 Minute Series (Topographic)
Sabanno Quadrangle ; Digital Raster Graphic Topographic Maps: 7.5 Minute Series (Topographic)