Evolution
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For quartzose fluvial sediments near the base of the Otero gypsum deposits a date of about 14,000 years was obtained, which places the Otero Evaporite sediments solidly in the late Pleistocene. Additionally, several dates were obtained in the fossil dune terrain just northeast of NE 30 observation station that averaged about 16000 years. A younger date of 6,500 years was obtained for rather similar gypsite-encrusted terrain on the ridge of the long parabolic dune arm that extends northeastward from South Playa Lucero to near Point of Sands.