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 |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
on west side of the upper reaches of Reef Creek about one mile south of Prairie Reef Lookout |
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
32 |
yellowish-gray, cross-bedded, iron stained, organic trails and burrows, |
fine to medium |
non calcareous |
|
|
24 |
maybe |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
31 |
yellowish-gray, iron stained, thin to thick bedded, vertical light gray veinlete=s in upper beds; organic trails and burrows |
medium to coarse |
|
|
poor |
12.5 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
30 |
same as 31 but cross bedded and has a thin gray shale bed |
medium to coarse |
|
|
poor |
7 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
29 |
same as 27 |
|
|
|
|
10 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
28 |
same as 26 |
|
|
|
|
1 |
yes |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
27 |
Shale and sandy shale, very finely micaceous, maroon, laminated |
very fine |
|
|
|
4 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
26 |
light yellowish gray, massive, crossbedded |
fine to medium |
poorly indurated |
|
|
1.3 |
yes |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
25 |
shale, sandy, very finely micaceous, marron, laminated, organic bioturbation |
very fine |
|
|
|
3.7000000000000002 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
24 |
same as 23, thin bedded, mud cracks, bioturbation |
|
poorly indurated |
|
poor |
12.5 |
no |
_f |
3.Gordon Shale, Flathead Sandstone, and McNamara Formation |
21N |
11W |
9 |
|
|
47.5879021006 |
-113.0218056945 |
TRS-SEC |
NAD83 |
|
23 |
yellowish-gray, massive, lower bed is mainly quartz pebble conglomerate, thinly laminated and cros bedded, some shale layers near bottom |
coarse |
poorly indurated |
|
poor |
30 |
no |
Kblf |
18. Blackleaf, Kootenai, and Morrison Formations |
23N |
09W |
34 |
B |
Exposed on west side of upper reaches of Hannan Gulch |
47.70811434455 |
-112.750313751 |
TRS-SEC |
NAD83 |
|
47 |
finely micaceous, mostly chert quartz and feldspar, thin bedded in upper part, weathers yellowish gray and has red iron stains, faulted, forms prominent ridge |
very fine |
noncalcareous |
|
|
30 |
no |
Kblf |
18. Blackleaf, Kootenai, and Morrison Formations |
23N |
09W |
34 |
B |
|
47.70811434455 |
-112.750313751 |
TRS-SEC |
NAD83 |
|
46 |
very thin bedded, mostly quartz, chert and feldspar, grey with greenish tint, thin sandy shale beds, limestone concretion in lower part, weathers blocky |
very time |
noncalcareous |
|
|
29 |
no |
Kblf |
18. Blackleaf, Kootenai, and Morrison Formations |
23N |
09W |
34 |
B |
|
47.70811434455 |
-112.750313751 |
TRS-SEC |
NAD83 |
|
44 |
thin shale partings in upper and lower parts. Cross bedded, very light gray, clear quartz and some chert grains, , very thin bedded, weathers blocky, |
very fine |
noncalcareous, hard |
|
|
12.6 |
no |
Kblf |
18. Blackleaf, Kootenai, and Morrison Formations |
23N |
09W |
34 |
B |
|
47.70811434455 |
-112.750313751 |
TRS-SEC |
NAD83 |
|
43 |
crossbedded gray, many lentiles of very coarse sandstone, mainly quartz feldspar and chert, many granules of claystone, ripple marked, and thin shale partings in lower part |
very fine |
noncalcareous, hard |
|
|
6.9000000000000004 |
no |
Kblf |
19. Flood Shale member of the Blackleaf formation and the upper part of the Kootenai formation |
|
|
|
|
exposed in a gulch just SW of the east end of the Sheep Mountains |
|
|
|
|
|
45 |
Sandstone (B bed), finely micaceous, yellowish gray, thin bedded, heavily iron stained, conchoidal fracture, wood fragments |
fine |
|
|
|
28 |
no |
Kblf |
|
|
|
|
|
|
|
|
|
|
|
42 |
very thin bedded, like unit 38, lower beds transitional to shale |
|
|
|
|
5 |
no |
Kblf |
|
|
|
|
|
|
|
|
|
|
|
38 |
Sandstone with shale partings, gray, very thin bedded, weathers yellowish gray, some cros bedding, heavily iron stained, weathers blocky |
very fine |
|
|
|
24 |
no |
Kblf |
|
|
|
|
|
|
|
|
|
|
|
35 |
gray, weathers yellowish gray, one bed, weathers blocky |
very fine |
slightly calcareous |
|
|
0.59999999999999998 |
no |
Kblf |
|
|
|
|
|
|
|
|
|
|
|
31 |
Sandstone (A bed) in beds up to 2.5' thick, heavily iron stained |
fine |
|
|
|
19 |
maybe |
Kblf |
20.Flood shale member of the blackleaf formation |
22N |
08W |
31 |
AA |
north side of irrigation canal in center NE,NE Teton County |
47.6237501507 |
-112.67287127 |
TRS-SEC |
NAD83 |
|
11 |
sandstone with many shale partings in lower part, mainly clear quartz some chert grains, light gray in upper part, dark gray in lower, forms massive hillside bench with vertical cliff |
fine-very fine |
|
|
|
22.5 |
maybe |
Kblf |
20.Flood shale member of the blackleaf formation |
22N |
08W |
31 |
AA |
|
47.6237501507 |
-112.67287127 |
TRS-SEC |
NAD83 |
|
10 |
many silty/shaly partings, dark-gray, lenticular and nodular beds, worms burrows |
very fine |
noncalcareous |
|
|
18 |
no |
Kblf |
20.Flood shale member of the blackleaf formation |
22N |
08W |
31 |
AA |
|
47.6237501507 |
-112.67287127 |
TRS-SEC |
NAD83 |
|
7 |
dark-gray, blue tint on broken surfaces, weathers blocky, small organic burrows locally abundant |
very fine |
calcareous |
|
|
0.59999999999999998 |
no |
Kblf |
20.Flood shale member of the blackleaf formation |
22N |
08W |
31 |
AA |
|
47.6237501507 |
-112.67287127 |
TRS-SEC |
NAD83 |
|
3 |
massive, dark gray, weathers brownish gray, upper part has platy weathering and wood fragments, lower part weathers blocky |
very fine |
calcareous |
|
|
|
no |
Kblf |
21. Flood shale member of the blackfoot formtation |
21N |
09W |
19 |
|
west side of saddle between Dry Fork and Stovepipe Creek, Patricks Basin Quadrangle |
47.55914724255 |
-112.808398439 |
TRS-SEC |
NAD83 |
|
4 |
sandstone with sandy shale interbeds, yellowish-gray, mostly quartz, ripple marks and organic burrows |
very fine |
|
|
|
13.5 |
no |
Kblf |
21. Flood shale member of the blackfoot formtation |
21N |
09W |
19 |
|
|
47.55914724255 |
-112.808398439 |
TRS-SEC |
NAD83 |
|
1 |
gray, thinly laminated, mostly quartz, weathers yellowish gray, asymmetrical ripple marks trending north |
fine to medium |
|
|
|
6 |
maybe |
Kv |
37. Two medicene formation, Virgelle formation and Telegraph Creek formation |
22N |
08W |
28 |
C,D |
In the north stream bank of the Sun river |
47.62666320805 |
-112.641228882 |
TRS-SEC |
NAD83 |
|
24 |
Light-gray, crossbedded, thin bedded, composed of clear quartz and some chert, locally very micaceous, contains many sandstone concretions and nodules- some heavily iron stained and more resistant leaving pedestals; in uppermost bed there are rounded clay |
fine |
calcareous |
|
|
149 |
yes |