The data displayed below were collected during a joint project
between the following departments at Montana Tech of The University of Montana: Geophysical Engineering
and the Montana Bureau of Mines and Geology. The samples represent sandstones collected and analyzed for their potential
use as proppant material.
General Information
Reference |
Knappen, R.S., and Moulton, G.F., 1930, Geology and mineral resources of parts of Carbon, Big Horn, Yellowstone, and Stillwater Counties, Montana: U.S. Geological Survey Bulletin 822-A, 70 p. |
Notes |
On page 37 there is information about the Eagle Sandstone, however it is not very descriptive. Much of the sandstone is interbedded with shale, clay, or coal. The Greybull Member is mentioned on page 26 but has no sandstone in its measured section. The Greybull is defined as a resistant sandstone with limonite cement with grain size less than 0.4mm. It has a high clay content. |
Measured Section Details
Unit Symbol |
Name |
Township |
Range |
Section |
1/4 Section |
Location |
Latitude |
Longitude |
Geomethod |
Datum |
Page Number |
Sub Unit Id |
Sandstone Description |
Grain Size |
Cementation |
Roundness |
Sorting |
Thickness (ft) |
Suitability |
*t |
Section of the tensleep sandstone |
06S |
25E |
7 |
D |
|
45.324462821 |
-108.692477113 |
TRS-SEC |
NAD83 |
13 |
|
cream-colored to buff, argillaceous |
|
slightly calcareous, easily eroded |
|
|
21 |
no |
*t |
Section of the tensleep sandstone |
06S |
25E |
7 |
D |
|
45.324462821 |
-108.692477113 |
TRS-SEC |
NAD83 |
13 |
|
buff, beds 2'-6' thick, resistant to erosion and weathering |
very coarse |
|
|
|
84 |
probably not |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
15 |
|
regular beds, cemented, veined and interlaminated with gypsum, dark to bright red |
coarse |
|
|
|
55 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
gypsiferous, red-brown, thin bedded, wave ripples and cross beds |
|
not resistant to erosion |
|
|
17 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
bright red, well laminated,contains a a lot of red clay, gypsum veinlets, cross bedding |
|
|
|
|
50 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
grey to brown, agrillaceous, |
|
non resistant |
|
|
12 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
brick red, well laminated and contains few gypsum laminae, |
very fine |
more resistant than abover |
|
|
5 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
brick red |
fine |
|
|
|
2 |
no |
^c |
Section of the Chugwater formation |
06S |
24E |
36 |
C |
|
45.2661904274 |
-108.734584869 |
TRS-SEC |
NAD83 |
16 |
|
dark brick red, rippled |
fine |
|
|
|
13 |
no |