Geology and uranium deposits of the Lucero uplift, Valencia, Bernalillo, and Sandoval counties Page: 15
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SECTION 3: SE Suwanee Peak Butte--Section measured on the rim
on the SE side of Suwanee Peak Butte; top of sec-
tion star s in Dakota sandstone in the SW corner
of SW t1W1 swt4 Sec. I, and continues SW into the
SW corner of SW& SE } Sec. 2, -T.8N.,R.3W.
Cumulative
Feet eet
CRETACEOUS
Dakota sandstone:
Sandstone: white very fine grained, rounded
well sorted, well cemented, -hard, resis-
tant, "clean" sandstone; coarse scour
zones up to 2 inches thick; limonite
coloration tbove 5 foot level; light-
gray siltstone interbedded; strike N.
4OoW., dip 701E-
UNCONFORMITY
Angular unconformity evident on regional
scale; locally not obvious.
JURASSIC: Incomplete, 46O feet thick.
Morrison formation: 115 feet thick.
Recapture Creek shale.member:--
10. Mudstone: pale green, and hite.,...... 78 46o
9. Sandstone: similar to unit 7.......... 5 382
8.. Mudstone: pale green................ 11 377
7. Sandstone: white, very fine grained, sub-
angular to subrounded, low angle cross-
stratified; with.pale green mudstone
from 3-7 feet above base of sandstone.. 21 366
Bluff sandstone: 198 feet thick.
6. Sandstone: upper unit: white, fine
grained, rounded, well sorted, poorly
cemented, cross stratified; locally
hematite nodules occur near top........ 124 3+5
5. Sandstone: lower unit; white to tan,
very fine grained, subrounded, well sorted,
parallel stratified and cross stratified 74 221
Summerville formation: Incomplete, 40' feet thick.
4. Mudstone and siltstone: red, gray, inter-
bedded;(base not visible); strike N.35 W,
dip 4 .50N' .E............................ . 40 147
Todilto formation: 35 feet thick.'
3. Gypsum: white; (spring deposits cap part
of the Todilto oeposure)............... 30 107
2. Limestone: light gray, platy, finely
crystalline, recrystallization.......4 5 77- 15 -
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Mirksy, Arthur & Chenoweth, William L. Geology and uranium deposits of the Lucero uplift, Valencia, Bernalillo, and Sandoval counties, report, October 27, 1952; (https://digital.library.unt.edu/ark:/67531/metadc1393202/m1/17/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.