Pioneer 7.5 Minute Geologic Quadrangle...with the understanding that it is not guaranteed to be...
1
W E S T C A R R O L P A R I S H EAS TC ARR OL PAR ISH POVERTY POINT NATIONAL MONUMENT POVERTY POINT NATIONAL MONUMENT Produced and published by the Louisiana Geological Survey 3079 Energy, Coast & Environment Building, Louisiana State University Baton Rouge, LA 70803 • 225/578-5320 • www.lgs.lsu.edu This geologic map was funded in part by the USGS National Cooperative Geologic Mapping Program under StateMap award number G15AC00247, 2015. Copyright ©2016 by the Louisiana Geological Survey Geology by: Paul V. Heinrich, John Snead, and Richard P. McCulloh GIS Compilers: R. Hampton Peele, John Snead, Paul V. Heinrich, Richard P. McCulloh, and Mallory N. Thomas Cartography by: Robert L. Paulsell The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government or the state of Louisiana. This map has been carefully prepared from the best existing sources available at the time of preparation. However, the Louisiana Geological Survey and Louisiana State University do not assume responsibility or liability for any reliance thereon. This information is provided with the understanding that it is not guaranteed to be correct or complete, and conclusions drawn from such data are the sole responsibility of the user. These regional geologic quadrangles are intended for use at the scale of 1:100,000. A detailed on-the-ground survey and analysis of a specific site may differ from these maps. SCALE 1:24,000 Base map from U.S. Geological Survey 1:24,000 GeoPDF Universal Transverse Mercator Projection, Zone 15 North American Datum 1983 (NAD 83) Contour Interval 5 feet National Geodetic Vertical Datum 1988 Pioneer 7.5 Minute Geologic Quadrangle Open File Series 2016-01 Chacko J. John Director & State Geologist APPROXIMATE MEAN DECLINATION, 2015 0 o 4’ E (0 o 6’ W/yr) FEET 40' 30" 42' 27' 40' 91° 30" 91°22'30" FEET 30" 30" 45' 30' 37' 27' 32° 32° 30" 30" 32° 37' 32° 25' 45' 25' FEET FEET 30" 91° 16 N 22 12 51 15 44 16 51 18 48 43 14 47 N 24 44 12 22 18 19 43 45 50 42 52 13 17 23 41 11 41 50 13 45 42 48 19 E 47 17 46 49 E 49 11 46 14 000m 36 36 36 36 6 36 36 000 36 36 6 620 3 000 3 22' 21 20 21 36 36 6 36 6 42' 000m 36 000 36 15 6 24 23 52 6 6 6 000m 6 6 6 36 6 36 36 36 36 36 6 36 6 6 6 36 780 810 590 000 6 000m 6 6 36 6 36 6 36 6 6 6 36 36 36 30' 91° 7.5 MINUTE GEOLOGIC QUADRANGLE SERIES PIONEER, LOUISIANA 1000 500 0 METERS 1000 2000 2 1 KILOMETERS 0 0.5 1 1 0.5 0 MILES 1 QUADRANGLE LOCATION LOUISIANA QUATERNARY SYSTEM HOLOCENE Holocene undifferentiated alluvium—Undifferentiated deposits of small upland streams: unconsolidated alluvial deposits of minor streams and creeks filling valleys incised into older deposits, with textures varying from gravelly sand to sandy mud. Small river meander-belt deposits—Point bar deposits underlying the meander belts of small rivers. Small river natural levee deposits—Deposits forming low natural levees flanking the meander belts of small rivers. Backswamp deposits—Fine-grained Holocene deposits of rivers, accumulated in the flood basins between meander belts. Primarily unconsolidated mud and fine sand. Distributary complex of Mississippi River meander belt 1— Natural levee deposits of the distributary course of Mississippi River meander belt 1. River channel remnants—Sinuous tonal patterns interpreted to be abandoned river channels, buried beneath backswamp and natural levee deposits. PLEISTOCENE LOESS—Eolian silt veneer of late Wisconsin age (Peoria Loess) mantling Pleistocene and older strata. Loess is shown where the total thickness of either or both loess units is 1 meter or greater. Upper Macon Ridge alloformation—Sandy fluvial deposits formed by the Mississippi River during a braided depositional regime associated with the transport of glacial outwash. Sand and gravel channel and bar deposits that underlie a well-preserved braid belt that is sometimes are capped by Peoria Loess, loess-derived colluvium and/or silty alluvium, and/or fine-grained flood basin sediments. The Upper Macon Ridge alloformation is differentiated from the adjoining Lower Macon Ridge alloformation by a generally lower elevation and distinct crosscutting relationships. It is the stratigraphically higher subunit (geomor- phically lower subunit of Rittenour et al., 2007). Dating by the optically stimulated luminescence method (Rittenour et al. 2005, 2007) indicates that the two principal braid belts in Louisiana are both of middle Wisconsin age with the Upper Macon Ridge Alloformation slightly the younger. Lower Macon Ridge alloformation—Sandy fluvial deposits formed by the Mississippi River during a braided depositional regime associated with the transport of glacial outwash. Sand and gravel channel and bar deposits that underlie a well-preserved braid belt that is that commonly are capped by Peoria Loess, loess-derived colluvium and/or silty alluvium, and/or fine-grained flood basin sediments. The Lower Macon Ridge alloformation in Louisiana is discontinu- ous along the eastern margin of Macon ridge and is the stratigraphically lower subunit (geomorphically higher subunit of Rittenour et al., 2007). Remnants consist of the southern end of Melville ridge and Walker ridge on the Natchez quadrangle and the Catahoula remnant further south. Open Water Contact—Includes inferred contacts. Roads and Railroads Streams Topographic Contours References Loess distribution based on: Miller, B. J. (compiler), [1983], [Distribution and thickness of loess in Baton Rouge, Louisiana 1 × 2 degree quadrangle]: Louisiana State University Department of Agronomy, Louisiana Agricultural Center, Louisiana Agricultural Experiment Station, Baton Rouge, unpublished map, Louisiana Geological Survey, scale 1:250,000. Description of Map Units Hua Hb Hsm Hmd 1 Pmrl Pmru Hcr Hsl Correlation of Map Units Mississippi River Valley e n e c o t s i e l P e n e c o l o H Pmrl Pmru Hb Hcr Hmd 1 Hsl Hsm Hua Peoria Loess Hb Hb Hmd 1 Hmd 1 Hmd 1 Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Hb Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmrl Pmru Pmru Pmru Pmru Pmru Pmru Pmru Pmru Pmru Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hua Hcr Hua Hcr Hcr Hcr Hcr Hcr Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsm Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsl Hsm Hsm Gowen Floyd Landing Floyd Darnell Pioneer Long Lake Bayou Ly o n B a y o u B a y o u M a c o n B a y o u M a c o n L y o n B a y o u A l l i g a t o r B a y o u B o g z a c k C r A l l i ga t o r Bay ou H u r r i c a n e C r C a ney Gla d e Ba y o u In di a n B a y o u I n d i a n B a y o u A l li g a t o r B a y o u Ly o n B a y o u A l l i g a t o r B ay o u A l l i g a t or B a y o u Little Cr H u r r i c a n e C r L i t t l e C r
Transcript of Pioneer 7.5 Minute Geologic Quadrangle...with the understanding that it is not guaranteed to be...
WEST CARROLPARISHEAST CARROL PARISH
POVERTY POINTNATIONAL MONUMENT
POVERTY POINTNATIONAL MONUMENT
Produced and published by the Louisiana Geological Survey3079 Energy, Coast & Environment Building, Louisiana State UniversityBaton Rouge, LA 70803 • 225/578-5320 • www.lgs.lsu.edu
This geologic map was funded in part by the USGS National CooperativeGeologic Mapping Program under StateMap award number G15AC00247, 2015.
Copyright ©2016 by the Louisiana Geological Survey
Geology by: Paul V. Heinrich, John Snead, and Richard P. McCulloh
GIS Compilers: R. Hampton Peele, John Snead, Paul V. Heinrich,Richard P. McCulloh, and Mallory N. Thomas
Cartography by: Robert L. Paulsell
The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government or the state of Louisiana.
This map has been carefully prepared from the best existing sources available at the time of preparation. However, the Louisiana Geological Survey and Louisiana State University do not assume responsibility or liability for any reliance thereon. This information is provided with the understanding that it is not guaranteed to be correct or complete, and conclusions drawn from such data are the sole responsibility of the user. These regional geologic quadrangles are intended for use at the scale of 1:100,000. A detailed on-the-ground survey and analysis of a specific site may differ from these maps.
SCALE 1:24,000
Base map from U.S. Geological Survey 1:24,000 GeoPDFUniversal Transverse Mercator Projection, Zone 15
North American Datum 1983 (NAD 83)Contour Interval 5 feet
National Geodetic Vertical Datum 1988
Pioneer 7.5 Minute Geologic QuadrangleOpen File Series 2016-01 Chacko J. John
Director & State Geologist
APPROXIMATE MEANDECLINATION, 2015
0o 4’ E (0o 6’ W/yr)
FEET
40'
30"42'
27'
40'
91°
30"
91°22'30"FEET
30"
30"
45'
30'37'
27'
32°
32°30"
30"
32°
37'32°
25'
45'
25'
FEET
FEET30"91°
16
N
22
12
51
15
44
16
51
18
48
43
14
47
N
24
44
12
22
18
19
43
45
5042
52
13
17
23
41
11
41
50
13
45
42 48
19
E 47
17
46
49
E49
11
46
14
000m
36
36
36
36
6
36
36
000
36
36
6 620
3 000
3
22'
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20
21
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36
6
36
6
42'
000m
36
000
36
15
6
24
23
52
6 66 000m
66 6
36
6
36
36
36
36
36
6
36
66
6
36
780
810
590
000
6
000m 6 6
36
6
36
6
36
6
66
36
36
36
30'91°
7.5 MINUTE GEOLOGIC QUADRANGLE SERIESPIONEER, LOUISIANA
1000 500 0 METERS 1000 2000
21KILOMETERS00.51
1 0.5 0
MILES
1
QUADRANGLE LOCATION
LOUISIANA
QUATERNARY SYSTEM
HOLOCENE
Holocene undifferentiated alluvium—Undifferentiated deposits of small upland streams: unconsolidated alluvial deposits of minor streams and creeks filling valleys incised into older deposits, with textures varying from gravelly sand to sandy mud.
Small river meander-belt deposits—Point bar deposits underlying the meander belts of small rivers.
Small river natural levee deposits—Deposits forming low natural levees flanking the meander belts of small rivers.
Backswamp deposits—Fine-grained Holocene deposits of rivers, accumulated in the flood basins between meander belts. Primarily unconsolidated mud and fine sand.
Distributary complex of Mississippi River meander belt 1— Natural levee deposits of the distributary course of Mississippi River meander belt 1.
River channel remnants—Sinuous tonal patterns interpreted to be abandoned river channels, buried beneath backswamp and natural levee deposits.
PLEISTOCENE
LOESS—Eolian silt veneer of late Wisconsin age (Peoria Loess) mantling Pleistocene and older strata. Loess is shown where the total thickness of either or both loess units is 1 meter or greater.
Upper Macon Ridge alloformation—Sandy fluvial deposits formed by the Mississippi River during a braided depositional regime associated with the transport of glacial outwash. Sand and gravel channel and bar deposits that underlie a well-preserved braid belt that is sometimes are capped by Peoria Loess, loess-derived colluvium and/or silty alluvium, and/or fine-grained flood basin sediments. The Upper Macon Ridge alloformation is differentiated from the adjoining Lower Macon Ridge alloformation by a generally lower elevation and distinct crosscutting relationships. It is the stratigraphically higher subunit (geomor-phically lower subunit of Rittenour et al., 2007). Dating by the optically stimulated luminescence method (Rittenour et al. 2005, 2007) indicates that the two principal braid belts in Louisiana are both of middle Wisconsin age with the Upper Macon Ridge Alloformation slightly the younger.
Lower Macon Ridge alloformation—Sandy fluvial deposits formed by the Mississippi River during a braided depositional regime associated with the transport of glacial outwash. Sand and gravel channel and bar deposits that underlie a well-preserved braid belt that is that commonly are capped by Peoria Loess, loess-derived colluvium and/or silty alluvium, and/or fine-grained flood basin sediments. The Lower Macon Ridge alloformation in Louisiana is discontinu-ous along the eastern margin of Macon ridge and is the stratigraphically lower subunit (geomorphically higher subunit of Rittenour et al., 2007). Remnants consist of the southern end of Melville ridge and Walker ridge on the Natchez quadrangle and the Catahoula remnant further south.
Open Water
Contact—Includes inferred contacts.
Roads and Railroads
Streams
Topographic Contours
References
Loess distribution based on:
Miller, B. J. (compiler), [1983], [Distribution and thickness of loess in Baton Rouge, Louisiana 1 × 2 degree quadrangle]: Louisiana State University Department of Agronomy, Louisiana Agricultural Center, Louisiana Agricultural Experiment Station, Baton Rouge, unpublished map, Louisiana Geological Survey, scale 1:250,000.
Description of Map Units
Hua
Hb
Hsm
Hmd1
Pmrl
Pmru
Hcr
Hsl
Correlation of Map Units
Mississippi RiverValley
enecotsi elP
enecoloH
PmrlPmru
Hb Hcr
Hm
d 1
Hsl
HsmHua
Peoria Loess
Hb
Hb
Hmd1
Hmd1
Hmd1
Hb
Hb
Hb
Hb
Hb
Hb
Hb Hb
Hb
Hb
Hb
Hb
Hb
Hb
HbPmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmrl
Pmru
Pmru
Pmru
Pmru
Pmru
Pmru
Pmru
Pmru
Pmru
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
Hua
HuaHcr
Hua
Hcr
Hcr
Hcr
Hcr
Hcr
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsm
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsl
Hsm
Hsm
Gowen
FloydLanding
Floyd
Darnell
Pioneer
Long Lake Bayou
LyonB
ayou
Bayo
u
Macon
Bay
ou Macon
Lyon
Bay o
u
All ig
ator
Bayou
Bogz
ack
Cr
Alligator Bayou
Hurricane Cr
Cane
yG
lade
Bayo
u
Indi
anBay
ou
IndianBayou
AlligatorBayou
LyonB
a you
Allig
ator
Bayo
u
Alli
gato
rB
ayo u
Litt
leCr
Hurricane Cr
LittleCr
