RESUMfi AND FIELD NOTES. 
137 
schisteux, rose et rouge, 150 pieds; puis au soru- 
met de la montagne qui est a 1’ouest du camp 
on a un calcaire gris blanchatre, rougeatre a 
cassure lisse et ressemblant au forest-marble 
du Jura ; pas de fossiles. Ce doit etre du Cre¬ 
tace, ou peuts etre du Jurassique. Le sand¬ 
stone gris et blanc ou se trouve notre camp est 
du Trias, et tous le sandstone precedent depuis 
Antelope Hills est la meme couche, qui n’est 
nullement cretacee. Pas de diluvium. 
19 Septembre.—Du No. 46 au No. 47.—Par- 
tie superieure du Trias ou New Red entre le 
Cretace et le grey sandstone. Pas de diluvi¬ 
um; un peu de calcaire cretace venant de 
Llano ; beaucoup de specimens d’un bois fos- 
sile de Trias. Les morceaux trouves pres de 
gypsum creelc sont du Trias et non-erratique 
comme je le croyais alors. 
20 Septembre.—Du No. 47 au No. 48.—Le 
meme qu ’hier. On trouve dans 3 ou 4 ravins 
sans eau courante maintenant, pres du Camp 
48, des Ostrea aquila roules et un Trigonia; 
ce qui prouve que cette couclie Neocomienne se 
trouve sur le sommet du Llano, ou l’on voit un 
second gradin. 
21 Septembre.—Du No. 48 au No. 49.—New 
Red all the way, avec cretace sur le top du 
Monte Revulto et Tucumcari. 1 
Nous faisons l’ascension et l’exploration de 
Pyramid Moutain; a 4 milles du Camp No. 48 ; 
of a rose and red color. Then at the summit 
of the mountain, which is at the west of the 
cam]), we have a grey, whitish and reddish 
limestone, which breaks with a smooth frac¬ 
ture and resembles the forest marble of the 
Jura. No fossils were seen ; it must be Cre¬ 
taceous or Jurassic. This greyish white sand¬ 
stone at our camp is of Trias, and all of 
the preceding sandstone from the Antelope 
Hills is the same bed, which is by no means 
cretaceous. No diluvium. 
September 19.— From Gamp No. 46 to Gamp 
No. 47.—The superior part of the Trias or the 
New Red is between the cretaceous and the grey 
sandstone. No diluvium ; a little cretaceous 
limestone coming from the Llano. Many speci¬ 
mens of the fossil-wood of the Trias were 
found ; the pieces found near Gypsum creek 
are of the Trias, and not erratic, as I then 
thought. 
September 20.— From Gamp No. 47 to No. 
48.—The same formations as yesterday. We 
found in three or four dry ravines, near Camp 
48, some rolled specimens of Ostrea aquila , and 
a Trigonia , which proves that this Neocomien 
bed is situated on the top of the Llano, where 
we see a second table or summit. 
September 21.— From Gamp No. 48 to Gamp 
No. 49.—The New Red is found all the way 
between these camps, with cretaceous on the 
top of Mount Revulto and Tucumcari. 
September 22.— From Gamp No. 49 to Camp 
No. 50.—At Pyramid mountain we find the 
following succession of strata : 
SECTION AT PYRAMID MOUNTAIN. 
500 ft. 
' White limestone. 
Yellow limestone, with bluish-grey 
bed at the bottom. 
Bed containing Ostrea [-?] < ‘Jurassic. ’ ’ 
White sandstone. 
Yellow sandstone. 
White sandstone. 
Grey and green bed, in contact with : 
the superior Trias. 
Red and green sandstone. 
White marls with [concretions?] “Triassic.” 
Red and green marls. 
White. 
^Red. 
We made the ascension and the exploration of 
Pyramid mountain at a point four miles from 
1 The section of Pyramid Mountain being given in English in the original, it is not duplicated.—W. P. B. 
18 t 
