bldridge] ASPHALT AND BITUMINOUS ROCK DEPOSITS. 301 
cany bitumen in some of their members — grits and limestones. These 
horizons, however, may be quite different from those in the Buckhorn 
region. 
Near Higginsville, Mo., the Warrensburg sandstone, which occu- 
pies what Mr. Arthur Winslow, the State geologist, considers a channel 
of erosion in the Coal Measures, and which is assigned to the Car- 
boniferous, is also infiltrated with bitumen to about 6 per cent. 
In West Virginia the grahamite vein, which has brought much 
renown to the region of its occurrence, occupies a vertical fissure in 
the Waynesburg sandstone and adjoining beds above and below, 
all of which are horizons in the Upper Productive and Upper Barren 
Coal Measures of the Carboniferous age. 
The bituminous sandstones of Kentucky are closely successive 
members of the Chester formation and the basal portion of the Coal 
Measures, and all, at one point or another, are impregnated to a 
degree sufficient to render them economically available for paving 
purposes, their contents ranging between 5 and 9 per cent. 
The Permian, or what is at j>resent accepted as the Permian, in 
central Indian Territory has been penetrated by fissures, through 
which petroleum has risen into its surficial sandy members and 
has also been converted to brea as surface deposits. This occurs at 
Wheeler, a settlement about 40 miles west of Ardmore. The locality 
is practically that of the enriched Coal Measure sandstones south of 
the Arbuckle Mountains, and there is little doubt that a common 
source supplied all the different horizons that now constitute the 
exposed storage reservoirs of the former fluid petroleum. 
The Trinity sand of the Lower Cretaceous is a bitumen-bearing for- 
mation at many points in its area of outcrop in southern Indian Ter- 
ritory and northern Texas. This is particularly the case where it 
rests upon the Carboniferous, an occurrence that is significant of the 
derivation of its bitumen from a source perhaps identical with that 
from which the several members of the Coal Measures have derived 
theirs. 
The Glenrose formation, also a member of the Trinity division of 
the Lower Cretaceous, in one of its limestones carries the bitumen 
of the deposits of Post Mountain, near the town of Burnet, Burnet 
County, Tex. The Anacacho formation of the Texas Upper Cretace- 
ous, corresponding to a horizon near the base of the Montana of the 
Rocky Mountain section, carries the rich bituminous limestones 
extensively quarried in the vicinity of Anacacho Mountain, 18 miles 
west of Uvalde, in southern Texas. In this connection the presence 
of important oil horizons in the Montana formation of the Florence 
oil field in Colorado is not unworthy of note. 
The Middle Park formation of Middle Park, Colorado, largely a 
terrane of eruptive material and a correlative of the Denver of the 
plains — a formation for the present termed post-Laramie, without 
