Tschicoma Formation of Polvadera Group (NM*)
[?] Tschicoma Dacite (NM)
Originally spelled Chicoma.
Pliocene, middle*
Pliocene, late*
Not designated. Occurs in Abiquiu quadrangle, Rio Arriba Co., NM; forms Abiquiu and Chicoma Peaks (Smith, 1938).
San Juan basin*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
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