' Record of Geology of Texas, ISS'Z-ISQG. 
105 
Emmons^ S. F. 
“IRecent geological observations in Texas and Western Arkansas show, 
according to 'Mr. K. T. Hill, that the marine Cretaceous beds of that 
region have been deposited along the southern base of an uplift, as yet 
imperfectly known, of Pal6025oie rocks, extending from Ai’kansas westward 
through Indian Territory and Northern Texas, and southwestward into 
New Mexico. It is not yet definitely known whether early Mesozoic beds 
are involved in this uplift so that its formation could be eorrelated with 
the Jurassic movement in the Rocky Mountain region, though certain 
facts render this probable.’* 
The question of the correlation of the Texas Cretaceous beds is also 
briefly discussed. 
157. Engineering and Mining Journal. 
New Yttria and TForia Minerals. 
Vol. XLIX, p. 338. Marcli 22, 1890. 
“W. 'E. Hidden and J. B. Mackintosh have found three new minerals in 
the locality near Bluff ton. Llano county, Texas, which has lately yielded 
unusual quantities of ininerials of the rarer earths — ^yttrialite, a thorium- 
yttrium silicate; Thorogummite, a hydrated uranium thoro-silicate ; and 
nivenite, a hydrated thorium-ythrium-lead silica. Besides these new spe- 
cies, the locality has produced considerable quantities of gadolinite, fer- 
gusonite and other heretofore rare minerals. 'A full account is given in 
the American Journal of Science, to which periodical Dr. Genth had con- 
tributed a paper on the Texas gadolinite in iSeptember, 1889. The locality 
is mineralogioally iremarkable, and furnishes a great variety of specimens. 
The country rook is a red granite, traversed by numerous quartz veins, 
in the pockets of which the yttria and thoria minerals occur.” 
158. 
Cinnabar in Texas. 
Vol. 58, p. 203. X. Y., Sept. 1, 1894. 
An announcement of the confirmation of the rumors concerning “the 
occurence of cinnabar in the southern portion of Presidio county, Texas, 
not far from Presidio del Norte, in the big bend of the Rio Grande.” 
159. 
General Mining Notes. 
(Cnal in Texas.) 
Vol. 58, p. 207. 1894. 
Extract: “There is coal on the Texas side of the Rio Grande near 
Eagle Pass — ^of the ‘Eox Hills Group.’ There is also coal at Santo Tomas, 
near Laredo (lignite) ; also at Presidio del Norte (between Eagle Pass and 
El Paso, -near Rio Grande) . At Thurber, on the Texas and Pacific, west of 
'Fort Worth, the Texas and Pacific Coal Company is an extensive producer, 
about 1000 tons a day.” 
The Texas and other A'merican 'Snlphnr Deposits. 
Vol. LXII, p. 26. July 11, 1896. 
160 . 
