Supplemental road log: From junction of US-380 and NM-37 to Capitan

The road log route follows US-380 eastward through the northern part of the Sierra Blanca basin past good exposures of Upper Cretaceous strata, Paleogene siliciclastic and volcaniclastic deposits, and Tertiary intrusive rocks. The first stop is to examine a pebbly sandstone of the Sanders Canyon Formation, formerly regarded as part of the Cub Mountain Formation. The second stop allows examination of numerous Tertiary intrusions within the Mesaverde Group.

This log draws many data from Ulvog and Thompson ( 1964) and Osburn and Arkell (1986). Thin-section descriptions are by S. M. Cather.