296 J. L. Rich — Stratigraphy of E, New Mexico. 



led liim to assign the Glorieta to the Upper Trias and to 

 correlate the gypsiferous formation above the San 

 Andreas with the Yeso formation whereas, in reality, it is 

 entirely different and much higher. On page 118 he says : 



' ' The basal member of the Upper Trias, the Glorieta sandstone, 

 outcrops along the valley of the Pecos from the Glorieta Mesa 

 downstream to somewhere between Puerto de Luna and Fort 

 Sumner. It outcrops at Santa Rosa. ' ' 



This statement shows clearly that Baker thinks the 

 Glorieta sandstone of Glorieta Mesa and the Santa Eosa 

 sandstone are the same, whereas, as will be shown below, 

 they are entirely different. 



The Santa Eosa sandstone is a very definite nnit 

 exposed at Santa Eosa and Puerto de Luna and along the 

 canyon of the Pecos for many miles both above and below 

 those places. From Santa Eosa it may be traced up the 

 valley of the Pecos as a continuous, unbroken, escarpment 

 to the Estaritos Dome, east of Anton Chico, where it 

 forms the rim-rock surrounding the dome. In the center 

 of the dome, about 200 feet below the base of the Santa 

 Eosa sandstone, the San Andreas limestone, 10 to 25 

 feet thick, is exposed. Beneath the San Andreas on the 

 dome is the Glorieta sandstone in its proper relation and 

 full thickness. The well drilled for oil near the top of 

 the dome started on the top of the Glorieta and penetrated 

 490 feet of it before entering the salmon-colored sand- 

 stones of the Yeso below. On another dome 5 or 6 miles 

 west of the village of Anton Chico, there are complete 

 exposures of the series from the Glorieta to the Santa Eosa 

 in such relations that there can be no question as to the 

 relative positions of the various formations. Between 

 the latter place and Glorieta Mesa there is a disturbed 

 belt in which there has been some faulting. It is in this 

 belt that Baker appears to have lost his bearings. East 

 of this he apparently followed the Santa Eosa sandstone 

 thinking it was the Glorieta. 



There are many other places in the region between the 

 Pecos and the Belen cut-off of the Santa Fe where the 

 true relation between the Glorieta and the Santa Eosa 

 sandstones can be seen. It may be observed, also, along 

 the Santa Fe Eailroad between Las Vegas and Bernal. 



The confusion of the Santa Eosa with the Glorieta 



