RESUME AND FIELD NOTES. 143 
9 Octobre.—Du Camp A, Humboldt, au Camp 
B, Douglas, or Antonitto.—On a le carbonifère 
inférieur jusqu'au village de Tejera, où comme 
le Trias, le coal a été trop comprimét n'ap- 
parait pas. Le carbonifére a 2,000 peids, le 
Trias 4 ou 5,000; derriére San Antonio, on a 
le gypse blane et toute notre route jusqu'au 
Camp Douglass est sur le Trias. Alluvion 
seulement des montagnes, sans cailloux striés, 
on a d’immenses blocs erratiques. 
October 9.— From Camp A, Humboldt, to 
Camp B, Douglas, or Antonitto.—We have the 
inferior Carboniferous as far as Tejera vil- 
lage, where, as the Trias, the coal has been 
too much compressed and does not appear. 
The carboniferous has a thickness of two 
thousand feet (2,000,) the Trias four or five 
thousand (4,000 or 5,000.) Behind San An- 
tonio we find white gypsum, and all our route, 
as far as Camp Douglas, is on the Trias. Allu- 
vium from the mountains, and without striated 
pebbles. We have immense erratic blocks. 
renbaonbnajy 
a 
a. Alluvium. b. Granite. c. Serpentinoid Trap. d Carboniferous. e. Trias. 
10 Octobre.—Camp B ou Douglas.—Ascen- 
sion d' Albuquerque mountains 10,000 pieds. 
Direction N.S. Les couches plongent à l'est 
sous un angle de 25° à 30°. Le Gold mount- 
ain est moins élevé que Albuquerque. Du 
Camp Douglas, on suit un caiion dans l'upper 
Trias pour un mille et demi; puis on com- 
| 
| 
mence avec le calcaire gris blanc, noirâtre du ` 
carbonifére; le coal ne paraît pas, il a été trop 
serré ; immédiatement on trouve dans le car- 
bonifére, les Productus giganteus, punctatus ; 
T'erebratula ; Spirifer ; Orthocera, Zaphrentis, 
Crinoids ; Zaphrentis trés-abondant. Le coal 
se trouve plus au sud dans le Manzana mount- 
ain. Quelques assises de schistes noirs, trés 
minces se trouvent entre les assises de calcaire 
compactes de quartre et six pieds d'épaisseur; 
rognonsde silex noir dans le calcaire, au sommet 
me le caleaire du Fort St. André. Dans le 
ORC de t ( 1e isi à | > 
cañon pas de traces de glaciers visibles. La beds of compact limestone. 
coupe a beaucoup d’analogie avec celles d' hier. 
Quelques assises de grés rosátre trés dur sont 
interposées dans le calcaire ; l'un de ces grès 
est á gros grains roulés. Le calcaire domine 
de beaucoup. 
X 
October 10.— We ascended the Albuquer- 
que mountains (Sandia mountains) 10,000 feet 
high. They are surmounted by the limestones 
of the inferior carboniferous. The direction 
is N, and $., and the rocks dip to the east- 
ward at an angle of from twenty-five to thirty 
degrees. Gold mountain is less elevated than 
Albuquerque mountain. From Camp Doug- 
las we followed for one and a half miles a 
cañon in the upper Trias; then we commenced 
with the greyish-white, blackish limestone of 
the carboniferous formation ; the coal does not 
appear—it has been too much compressed. In 
these carboniferous rocks we found the follow- 
ing fossils: Productus, giganteus and punc- 
tatus; Terebratule, Spirifere, Orthocera, Za- 
phrentis and Crinoids ; the Zaphrentis was very 
abundant. Coal is found further to the south, 
. : | in the Manzana mountains. Several beds of 
le calcaire est un peu marneux, avec silex, com- | 
black shales, four to six feet in thickness, and 
very thinly stratified, are found between the 
Kidney-shaped 
masses of black silex are present in the lime- 
stone, and at the summit it is a little marly, 
with silex, like the limestone of Fort St. 
André. "There are no visible traces of glaciers 
in the cañons. The section is much like that 
seen yesterday. Some beds of very hard and 
rose-colored sandstone are interposed in the 
limestone. One of these beds is of coarse 
rolled grains. The limestone is the predom- 
inating rock. 
