Geology and uranium deposits of the Lucero uplift, Valencia, Bernalillo, and Sandoval counties Page: 28
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SECTION 10:
3.3 miles N.35 W. of Acoma--Section measured on
the slope immediately SW of the road which
ascends the escarpment; top of section starts
in Dakota sandstone in SE+ NEk ESec. 7,
and continues SE into W: SW W- Sec. 8,
T.8N., R.7W.Cumulative
CRETACEOUS Feet Feet
Dakota sandstone:~
Sandstone: typical; with interbedded
black shale; basal unit is black shale;UNCONFOPLMITY
Angular unconformity evident on regional
scale; locally not obvious.
JURASSIC: Incomplete, 203 feet thick.
Morrison formation: 173 foot thIck.
Recapture Creek shale member:
9. Sandstone: white, medium grained, sub-
rounded, well sorted, moderately
cemented, low angle cross stratified;
with angular, coarse grained sand to
pebbles in scour pockets up to
several inches thick................. 9
8. Mudstone: pale green; with 1 foot thick
sandstone bed beginning 25 fet and 31
feet above the base...........*. ..... 43
7. Sandstone: white, fine grained, sub--
rounded, well sorted, moderately
cemented, low angle cross stratified;
with less than l$ kaolinization....... 11
6. Mudstone: pale green and purple....... 17
5. Sandstone: white, fine grained, subrounded
well sorted, well cemented, in lower
part, grading upward into argillaceous
siltstone; with coarse sand to pebbles
of subangular auartz and less than 5%
feldspar grains scattered throughout,
mostly in scour pockets................ 9
4. Mudstone: purple, grading upward into
pale green; with a 1 foot thick gray
cryptocrystalline limestone bed begin-
ring 30 feet above the base.........,. 61+
3. Sandstone: white, very fine grained, sub-
rounded, well sorted, moderately cemented
low angle cross stratified;.,.......... )4
2. Mudstone: purple............*.......... 16203
194
.123
4-6sandstone: Incomplete, 30 feet thick.
Sandstone: gray, cross stratified; (only
top part visible) ...................
- 28 -30 30
Bluff
1.
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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/m1/30/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.