Pg. 127, 155 (fig. 28). Folsom Vent basalt. Name applied to basalt that issued from Folsom Vent. Folsolm Vent basalt rests on 5 feet of alluvial sands and gravels, which in turn rest directly on sediments of Cretaceous Niobrara group. Age is Late Cenozoic.
Folsom Vents, two cinder cones and associated basalt, cover less than 0.5 sq mi near mouth of Hereford Park, 1 mi west of Union Co. line on NM Highway 72, northeastern NM.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1382).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
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