Nacimiento Formation Nacimiento Formation The Nacimiento Formation is a sedimentary rock formation found in the San Juan Basin of western New Mexico (United States) and named for the Nacimiento Mountains. It is a heterogeneous nonmarine formation composed of shale, siltstone, and sandstone, deposited in floodplain, fluvial and lacustrine settings, and made up of sediment shed from the San Juan uplift to the north and the Brazos-Sangre de Cristo uplift to the east. It was deposited mostly between ~64.5 and ~61 million years ago, during the early and middle Paleocene. The climate was humid and warm to hot. This unit interbeds with the
Battle of the Brazos Battle of the Brazos The Battle of the Brazos is an American college football rivalry game between the Baylor Bears and Texas A&M Aggies. The rivalry is named for the Brazos River that flows by the two schools, which are 90 miles apart. The Battle of the Brazos debuted in 1899. The rivalry became dormant in 2012, when Texas A&M left the Big 12 Conference to join the Southeastern Conference. In the early days of the rivalry (1905 and earlier), Baylor and Texas A&M played each other multiple times in a single year, possibly due to a dearth of regional