Art. IX.] Herrick-Johnson, Geology of the Albuquerque Sheet. 223 
Prof. Cummins in a paper read before the Texas Academy of 
Science, June 15, 1897, says, “The Phacoceras dumblei^ Hyatt, 
has been found only along a very narrow horizon in the Texas 
Permian. . , This fact will assist materially in correlating 
the Texas and Kansas beds, as that fossil has been reported 
only from one locality in the Kansas area, where it is associated 
with the same fossils as in Texas. It is quite certain that thje 
Fort Riley horizon is the same as the Wichita division of Texas, 
and is at the very top of the division. With one horizon defi- 
nitely established, it will be easy enough to correlate the other 
parts of the formation in the two areas.” 
An extended discussion of the Red Series is not necessary 
in this place as we have recently printed extended descriptions 
of the surface geology of the Red Series as seen in the region 
of the white sands in Otero county (current volume of the Jour- 
nal of Geology) and also an article covering the present region 
in the American Geologist. From these it will be gathered that 
the three-fold division of the series is sustained and that on 
paleontological evidence the lower division (red beds proper) 
may be assigned to the Permian. The gypsum is often the 
upper limit of these beds though evidence is lacking to prove 
that it is constant in position where present. The chocolate 
division we assign to the Triassic solely on stratigraphical 
grounds and similarly assign the upper loose marls and sands 
(vermilion beds) to the Jurassic. The correlated sections (Plate 
XLVIII) will illustrate the sequence. On the Albuquerque sheet 
very limited portions of the Red Series appear. The vermilion 
beds occur in the valleys at north-western portion beneath the 
Cretaceous. Everywhere the saline and gypsiferous character 
is preserved and the region south and west of the Jemes moun- 
tains is a good illustration of the lurid colors and desolate land- 
scape of the saline areas. Along the fault line west of the 
north-west corner of the Albuquerque mesa a low series of hills 
lying east of the fault line and consisting of red and white sand- 
stone tilted sharply to the east represents a metamorphic portion 
of the Red Series but the sequence cannot be made out with 
certainty. 
