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 |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
11 |
30 |
light yellowish grey, silty, thinly and irregularly bedded, weathers light brownish orange, some carbonaceous whisps |
fine |
|
|
|
10.4 |
maybe |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
29 |
medium light gray, salt and pepper, massive, weathers yellow gray stained with limonite, quartz and chert (3-2_ |
|
few brown grains in a matrix of secondary calcite |
quartz well to subrounded |
|
1.1000000000000001 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
28 |
concretionary, medium light gray, weathers yellowish brown to brown, contains small amounts of ferruginous material |
fine |
calcareous, secondary calcite |
|
|
4.5 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
27 |
grayish-yellow, bedding indistinct, thickness varies |
fine |
very friable |
|
|
10 |
yes |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
26 |
grayish yellow, some chert, cross bedded, mostly massive except 5 distinct parting planes, looks like near beach deposite |
medium |
|
|
well sorted |
5.0999999999999996 |
yes |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
25 |
grayish-yellow, indistinctly bedded |
fine |
friable,slightly calcareous |
|
|
6.2000000000000002 |
yes |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
24 |
grayish yellow, massive, weathers grayish -orange yellow, mostly quartz, top film of clay, forms a prominent ledge overhanging beds below |
fine - medium |
|
|
|
12.6 |
maybe |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
23 |
light-yellowish gray, indistinctly bedded, upper 36 cm weathers yllowish orange |
|
fairly friable and erodable |
|
|
4.7000000000000002 |
maybe |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
22 |
light olive gray, some flute casts and abundant casts of trace fossils |
fine |
hard to soft |
|
|
2.2999999999999998 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
21 |
light gray, silty, some finely macerated carbonaceous debris; nodular or chunky appearance, trace fossils on bedding surfaces, |
fine |
|
|
poorly |
3.2000000000000002 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
20 |
Light gray, silty, few rounded granules of dark chert, nodular or chunky, occasional dicrete masses of concretionary marcasite |
silty |
|
|
poorly |
4.5999999999999996 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
12 |
yellowish gray, upper surface ripple marked, ferruginous, weathers mediun brown, lower part silty anc contains small fragments for mineral charcoal and trace fossils. |
medium |
|
|
|
2 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
10 |
light gray, slightly ferruginous, alternating beds with siltstone. Crossbedded, forms a ragged cliffy slope |
fine - medium |
more indurated |
|
better than in lower part of unit |
3.7000000000000002 |
no |
Kblf |
Type section for Flood Member |
20N |
03E |
7 |
ABC |
4.5 miles west of Great falls |
47.50601581475 |
-111.399923479 |
TRS-SEC |
NAD83 |
12 |
8 |
light olive gray, quartzose, interbedded with about equal amounts of shaly siltstone with laminae marked by films of carbonaceous matter, , trace poorly preserved fossils, lentils of shaly siltstone, |
|
|
|
|
3.2000000000000002 |
probably not |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
61 |
moderately gray, concretionary.Concretions (large) are epigenetic and occupy scour channels in underlyins sandstone |
fine |
calcareous |
|
|
5.5999999999999996 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
60 |
light yellowish gray, Irregular wavy bedding, parted my laminae of medium gray shale |
fine |
calcareous |
|
|
10.699999999999999 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
59 |
Similar to 56, fine horizontal laminae, no cross lamination |
|
|
|
poorly |
0.5 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
58 |
grayish orange, similar to upper part of unit 53 |
fine |
calcareous |
|
|
4.2999999999999998 |
probably not |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
57 |
light yellowish gray, cherty, tuffaceous, cross laminated and makes ledge |
fine to coarse |
|
|
poorly |
1.3999999999999999 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
56 |
grayish orange, similar to upper part of unit 53 |
fine |
|
|
|
2 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
55 |
light yellowish gray, massive, makes ledge with small overhang |
medium |
hard |
|
|
1.2 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
54 |
light yellowish gray, weathers grayish orange, irregular wavy layers with laminae of shale |
fine |
calcaerous |
|
|
6.7000000000000002 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
53 |
Like 54 but fresh, light yellowish gray, unweathered. Makes top of excavated slope |
fine |
calcareous |
|
|
8.5 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
52 |
olive gray, contains irregular masses and partings of medium gray shale |
medium |
soft |
|
poorly |
1.5 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
51 |
light gray, massive with trace fossils |
fine |
hard |
|
|
0.29999999999999999 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
50 |
light gray, thin parting of medium gray fissile shale |
fine |
|
|
|
3.2999999999999998 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
48 |
light gray, traces of carbonaceous debris. Small lenticular and nodular masses enclosed by sandy gray clay, indistinct bedding, ledge making |
fine |
faintly calcareous, resistant |
|
|
5.5 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
46 |
olive, massive, irregular inclusions of shale |
|
soft |
|
|
2 |
probably not |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
45 |
light yellowish gray, small amount of rounded polished black chert, flakes of carbonaceous material, small lenticular and nodular masses some enclosed by clay, very indistinct bedding, make broken rubbly ledge. |
fine - medium |
hard, faintly calcareous |
|
|
1.8999999999999999 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
41 |
light olive gray, surface weathers dark yellowish orange, some rounded granules of gray chert, all in a martix of light gray clay which also marks indistinct laminae |
fine to coarse |
non calcareous, soft, friable |
subangular |
poorly |
0.40000000000000002 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
13 |
39 |
olive gray, thin slabby layers |
fine |
|
|
|
0.90000000000000002 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
14 |
37 |
olive gray, finely laminated,weathers brown, presence of bioturbation |
fine |
|
|
|
0.40000000000000002 |
no |
Kblf |
Reference section of Flood Member |
21N |
03E |
32 |
DCC |
|
47.52530185065 |
-111.3761285625 |
TRS-SEC |
NAD83 |
14 |
34 |
light olive gray, massive, poorly stratified, weathers light yellowish brown to dark yellowish orange, organically reworked, burrows filled with clay shale, |
fine |
|
|
poorly |
2.3999999999999999 |
no |
Kblf |
Reference section of Flood Member |
20N |
03E |
5 |
AAB |
|
47.5234408756 |
-111.3742484665 |
TRS-SEC |
NAD83 |
14 |
24 |
light yellowish brown, layers 9-15cm thick parted by thin laminae of medium gray siltstone. Trace fossils in upper part, |
fine |
|
|
|
3.7999999999999998 |
no |
Kblf |
Reference section of Flood Member |
20N |
03E |
5 |
AAB |
|
47.5234408756 |
-111.3742484665 |
TRS-SEC |
NAD83 |
14 |
22 |
light yellowish gray, interbedded with light olive sandy siltstone, uper surfaces show fossils |
fine |
|
|
|
1.2 |
no |
Kblf |
Reference section of Flood Member |
20N |
03E |
5 |
AAB |
|
47.5234408756 |
-111.3742484665 |
TRS-SEC |
NAD83 |
14 |
20 |
light yellowih gray,small flakes of carbonaceous debris, finely laminated layers separated by 6mm thick laminae of light gray siltstone. Makes subduedledge with slightly undulating top |
fine |
faintly calcareous, hard, resistant |
|
|
2.2000000000000002 |
no |
Kblf |
Reference section of Flood Member |
20N |
03E |
5 |
AAB |
|
47.5234408756 |
-111.3742484665 |
TRS-SEC |
NAD83 |
14 |
19 |
light yellowish gray, layers interbedded with siltstone, bedding maked by thing laminae of clay, fragmented trace fossils |
very fine |
|
|
|
1.3999999999999999 |
no |
Kblf |
Reference section of Flood Member |
20N |
03E |
5 |
AAB |
|
47.5234408756 |
-111.3742484665 |
TRS-SEC |
NAD83 |
14 |
18 |
light olive, silty |
very fine |
|
|
|
0.90000000000000002 |
no |