The known cultural chronology of the La Junta region as used by archeologists today for the last three thousand years. The major periods shown in gray are fairly standard terms used by most archeologists in Texas. The brightly colored blocks represent cultural patterns that have been defined for the eastern Trans Pecos region (on the left) and for the La Junta district ("Bravo Valley Phases" on the right).

Kelley considered his Bravo Valley sequence to be merely a "working framework." In 1990 he lamented the fact that this framework "unfortunately soon achieved the status of a dogma." Kelley recognized that these cultural patterns need to be refined and redefined (or scrapped altogether) based on new data and ideas.