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
Washington-on-the-Brazos, Texas Any students residing in the area are within the Brenham Independent School District. Washington-on-the-Brazos, Texas Washington-on-the-Brazos is an unincorporated area along the Brazos River in Washington County, Texas, United States. Founded when Texas was still a part of Mexico, the settlement was the site of the Convention of 1836 and the signing of the Texas Declaration of Independence. The name "Washington-on-the-Brazos" was used to distinguish the settlement from "Washington-on-the-Potomac"—i.e., Washington, D.C. Founded largely by immigrants from the southern United States, Washington-on-the-Brazos is known as "the birthplace of Texas" because it was here that, on March 1, 1836, Texas delegates met