RESUME AND 
schisteux, rose et rouge, 150 pieds; puis au som- 
met de la montagne qui est à l'ouest du camp 
on à un calcaire gris blanchátre, rougeátre à 
cassure lisse et ressemblant au forest-marble 
du Jura; pas de fossiles. Ce doit être du Cré- 
tacé, ou peuts être du Jurassique. Le sand- 
stone gris et blanc oü se trouve notre camp est 
du Trias, et tous le sandstone précedent depuis 
Antelope Hills est la méme couche, qui n'est 
nullement crétacée. Pas de diluvium. 
19 Septembre.—Du No. 46 au No. 47.—Par- 
tie supérieure du Trias ou New Red entre le 
Crétacé et le grey sandstone. Pas de diluvi- 
um; un peu de calcaire crétacé venant de 
Llano ; beaucoup de specimens d'un bois fos- 
sile de Trias. Les morceaux trouvés pres de 
gypsum creek sont du Trias et non-erratique 
comme je le croyais alors. 
20 Septembre.—Du No. 47 au No. 48.—Le 
méme qu ‘hier. On trouve dans 3 ou 4 ravins 
sans eau courante maintenant, prés du Camp. 
48, des Ostrea aquila roulés et un Trigonia; 
ce qui prouve que cêtte couche Néocomienne se 
trouve sur le sommet du Llano, où l'on voit un | 
second gradin. 
21 Septembre.—Du No. 48 au No. 49.—New 
Red all the way, avec crétacé sur le top du 
Monte Revulto et Tucumcari.! 
Nous faisons l'ascension et l'exploration de 
Pyramid Moutain; à 4 milles du Camp No. 48; 
FIELD NOTES. 137 
| of a rose and red color. Then at the summit 
of the mountain, which is at the west of the 
camp, 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 
ills is the same bed, which is by no means 
cretaceous. No diluvium. 
September 19. —From Camp No. 46 to Camp 
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 Camp 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 Camp No. 48 to Camp 
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 Camp No. 49 to Camp 
No. 50.—At Pyramid mountain we find the 
following succession of strata : 
SECTION AT PYRAMID MOUNTAIN. 
F White limestone. 
Yellow limestone, with bluish-grey 
bed at the bottom. 
Bed containing Ostrea [—— ?] - “Jurassic.” 
500 ft. < 
Grey and green bed, in contact with } 
the superior Trias. 
Red and green sandstone. 
White marls with [concretions ?] 
Red and green marls. 
White. 
| 4: Triassic. ’” 
Red. J 
We made the ascension and the exploration of 
Pyramid mountain at a point four miles from 
l 1 The section of Pyramid Mountain being given in English in the original, it is not duplicated. —W. P. B. 
184 
Ane 
