STRATIGRAPHICAL GEOLOGY 
159 
previously, the same conclusions regarding the lower part, basing 
his deductions upon abundant collections of fossils. Distinctly 
based upon Herrick’s entire section of the Sandia-Manzano moun¬ 
tains red beds which he had carefully measured, definitely located, 
and properly published was the proposed title Bernalillo shales. 
This name was thus defined and published in some obscure gov¬ 
ernment reports and a number of other places, but in the editing 
of the report of the Jornada del Muerto the term Jura-Triassic 
was by some one substituted in the proofs. 
The addition by Mr. Lee of a capping member — the so-called 
San Andreas limestone, to his Manzano red beds does not make 
the title valid, just because the limits are somewhat different from 
those of the Bernalillo fcrmation. The existence of a thick dark 
limestone above the Bernalillo shales as urged by him seems some¬ 
what questionable. There surely will have to be very much better 
evidence adduced before this assertion can be accepted. There are 
many recorded observations which strongly militate against this 
notion. Indeed, there appears to be very clear testimony of pro¬ 
found faulting which has locally raised, as it were, the lower 
limestone above the level of the red shales. In the San Filice 
range east of Socorro, this fault has been tested by the drill and 
a displacement of nearly 1,000 feet found. Similar faulting back 
of the Sandia and Manzano ranges brings the lower limestone 
above the same shales, in the same way as it does in the Caballos 
and Oscura ranges. Little wonder is it that Mr. Girty comments 
with surprise upon the wonderful similarity of the fossils that 
were collected for him from the limestone beneath the shales and 
from the alleged limestone above. 
As he has in person repeatedly explained, and as his published 
writings clearly show. Professor Herrick never intended formally 
to propose any of the geologic titles mentioned. The formal pro¬ 
posal of geographic titles and their special definition was reserved 
for a subsequent memoir, which I believe, was nearly completed 
at the time of his demise. The intentional informal character of 
the few geographic names that he did use is succinctly indicated 
in all of his writings. His term Manzano beds, for example, is 
used in several very different senses in as many places; one re¬ 
ferring only to the thick gray limestone at the bottom of the red¬ 
dish beds — the so-called quartzite layer at the top of his “Sandia” 
shales. 
