Comparison with Morton and Matti (1987) Slip Rate Geomorphic and soil chronologic study 36 m of uplift of surface Qyf 1a across 3 strands Surface age of ~13 ka estimated using soil comparisons with radiometrically dated soil at Cajon Pass Morton and Matti (1987) dip-slip rate of ~4.5 - 5.5 mm/yr is significantly greater than our estimate of ~1.9 mm/yr using cosmogenic ages of fan surface
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