Detrital zircon geochronology yields a maximum age of 1475 million years, corresponding to the Calymmian period.

The Trampas Group consists of metasedimentary formations deposited in the reactivated Pilar Basin during the Picuris orogeny.

Detrital zircon geochronology yields a maximum age of 1475 Mya, considerably younger than the underlying Hondo Group.

The Trampas Group likely was deposited in a basin formed during the breakup of the supercontinent of Columbia.

[2] The formations of the Trampas Group were originally included by Bauer and Williams in the Hondo Group as part of their sweeping revision of northern New Mexico Precambrian stratigraphy in 1989.