Atchafalaya Bay 30 x 60 Minute Geologic Quadrangle...Atchafalaya Bay 30 x 60 Minute Geologic...
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91°00' 29°30' 15' 15' 29°00' 91°00' 15' 30' 45' 92°00' 29°00' 92°00' 29°30' 45' 30' 15' ATCHAFALAYA BAY, LOUISIANA 29091-A1-TB-100 ATCHAFALAYA BAY, LOUISIANA 30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES Atchafalaya Bay 30 x 60 Minute Geologic Quadrangle 2012 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 Production of this map was supported by the U.S. Geological Survey, Department of the Interior, under Assistance Award No. G10AC00383. Copyright ©2012 by the Louisiana Geological Survey Geology by: Paul Heinrich and John Snead. GIS compilation by: R. Hampton Peele, Marcus B. Massom, and Katherine A. Renken Cartography by: Robert L. Paulsell and Lisa G. Pond. Correlation of Map Units Chacko J. John Director & State Geologist APPROXIMATE MEAN DECLINATION, 2012 change = 0 o 7’ west/year 0 o 46’ E SCALE 1:100,000 Base map from U.S. Geological Survey 1:100,000 Digital Line Graphs (100K DLG) Universal Transverse Mercator Projection, Zone 15 North American Datum 1927 (NAD 27) Contour Interval 2 meters Bathymetric Interval 1 meter National Geodetic Vertical Datum 1929 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Kilometers 1 2 1 4 3 6 5 8 7 10 9 12 11 13 Miles 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. Published 2012 Publication 30 x 60 Minute Louisiana Geologic Quadrangle Index 50 miles 0 50 kilometers 0 90 o 92 o 94 o 32 o 30 o Tallulah Bastrop Natchez Leesville Winnfield Black Bay Alexandria New Roads Morgan City New Orleans Natchitoches Amite Gulfport Crowley Bogalusa Woodville De Ridder Ville Platte Port Arthur White Lake Ponchatoula Baton Rouge Lake Charles Monroe North Monroe South Terrebonne Bay Atchafalaya Bay Shreveport North Shreveport South Mississippi River Delta Hdl Htd Teche Lobe Atchafalaya Lobe Holocene Hapd Lafourche Lobe Mississippi River Delta Description of Map Units QUATERNARY SYSTEM HOLOCENE Atchafalaya River delta plain deposits—Deltaic deposits predominantly composed of distributary sand, delta-front and prodelta mud and clay, and natural levee silt and clay. These sediments lie upon the surfaces of the Teche delta lobe. Distributary complex of the Lafourche delta lobe—deltaic deposits underlying the delta plain of the Lafourche delta lobe. They are composed of cyclically interbedded interdistributary peat and clay; natural levee silt and clay; distributary sand; and delta-front and prodelta mud and clay. Deposits of the Teche delta lobe, Mississippi River—deltaic deposits underlying the delta plain of the Teche delta lobe. They are composed of cyclically interbedded interdistributary peat and clay; natural levee silt and clay; distributary sand; and delta-front and prodelta mud and clay. These sediments lie upon the surfaces of the Maringouin and other older delta lobes, which are either buried beneath younger delta lobes, submerged beneath the Gulf of Mexico, or a combination of both, and upon the surface of the underlying Prairie Allogroup. Open water Tidal flats Shell Keys Inferred contact Streams and canals Topographic contours Bathymetric contours The compilers gratefully acknowledge constructive technical review by L. D. Britsch and H. H. Roberts References; Surface Geology Busch, R. E. Jr., W. C. Ward, and H. C. Skinner (compilers), 1974, Physiographic map of the Atchafalaya Basin and a portion of the Lower Red River Valley, Louisiana: U.S. Army Corps of Engineers, New Orleans, Louisiana, scale 1:250,000. Engineer Agency for Resources Inventories, 1973, Inventory of basic environmental data, south Louisiana, Mermentau River Basin to Chandeleur Sound, with special emphasis on the Atchafalaya Basin: Prepared for U.S. Army Corps of Engineers, New Orleans district. Louisiana Oil Spill Coordinator's Office, 2007, Landsat Thematic Mapper Satellite Image 2005, UTM Zone 15 NAD83, LOSCO (2007) [landsat5tm_la_lsu_2005.sid]: Louisiana Oil Spill Coordinator's Office, Baton Rouge, LA. May, J. R., L. D. Britsch, J. B. Dunbar, J. P. Rodriguez, and L. B. Wlosinski, 1984, Geological investigation of the Mississippi River deltaic plain: U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, Technical Report GL–84–15, prepared for U.S. Army Corps of Engineers, New Orleans district [unpaginated: oversized pages, including plates at 1:62,500 scale]. Saucier, R. T., 1994, Geomorphology and Quaternary geologic history of the Lower Mississippi Valley: volume 2, Vicksburg, Mississippi, U. S. Army Corps of Engineers, Waterways Experiment Station [unpaginated: 31 oversized pages, including 28 plates (1:250,000-scale)]. Saucier, R. T., and J. I. Snead (compilers), 1989, Quaternary geology of the Lower Mississippi Valley: in Morrison, R. B., ed., Quaternary non-glacial geology: conterminous United States: Boulder, Colorado, Geological Society of America, The Geology of North America, v. K-2, Plate 6, scale 1:1,100,000. Smith, L. M., J. B. Dunbar, and L. D. Britsch, 1986, Geomorphological Investigation of the Atchafalaya Basin, Area West, Atchafalaya Delta, and Terrebonne Marsh: volume 2, Vicksburg, Mississippi, U. S. Army Corps of Engineers, Waterways Experiment Station [unpaginated: 54 oversized plates (1:24,000-scale)]. Van Lopik, J. R., 1955, Recent geology and geomorphic history of central coastal Louisiana: Unpublished PhD. dissertation, Louisiana State University, Baton Rouge, 195 p. New mapping by the compilers based in part on LIDAR quarter-quadrangle images (source: Louisiana Federal Emergency Management Agency, and U.S. Army Corps of Engineers, St. Louis District), and digital orthophoto quarter quadrangle images, downloaded from the Atlas website http://atlas.lsu.edu); and on the U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS), Soil Survey Geographic (SSURGO) Database. Htd Hdl Hadp Hadp Hadp Hadp Hadp Hadp Hadp Hadp Hadp Hadp Hadp Hadp Htd Htd Htd Htd Htd Htd Htd Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl Hdl R I V E R Lost Lake L O W E R A T C H A F A L A Y A R I V E R C a r e n c r o L a k e FOURLEAGUE BAY B a y J u n o p A T C H A F A L A Y A B A Y EAST COTE BLANCHE BAY G U LF O F M E X I C O B l u e H a m m o c k B a y o u C a i l l o u B a y ST. MARY PARISH TERREBONNE PARISH ST. MARY PARISH TERREBONNE PARISH IBERIA PARISH ST. MARY PARISH State W aters Federal Waters S tat e W a t e r s F e d er a l W a t e r s P OI N T A U F E R S H E L L R E E F POINT AU FER ISLAND MARSH ISLAND South Point Mound Point Point Au Fer South Point
Transcript of Atchafalaya Bay 30 x 60 Minute Geologic Quadrangle...Atchafalaya Bay 30 x 60 Minute Geologic...
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91°00'29°30'
15'15'
29°00' 91°00' 15'30'45'92°00'
29°00'
92°00'29°30'
45' 30' 15'
ATCHAFALAYA BAY, LOUISIANA29091-A1-TB-100
ATCHAFALAYA BAY, LOUISIANA 30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES
Atchafalaya Bay 30 x 60 Minute Geologic Quadrangle2012
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
Production of this map was supported by the U.S. Geological Survey,Department of the Interior, under Assistance Award No. G10AC00383.
Copyright ©2012 by the Louisiana Geological Survey
Geology by: Paul Heinrich and John Snead.
GIS compilation by: R. Hampton Peele, Marcus B. Massom, and Katherine A. Renken
Cartography by: Robert L. Paulsell and Lisa G. Pond.
Correlation of Map Units
Chacko J. John
Director & State Geologist
APPROXIMATE MEAN DECLINATION, 2012change = 0o 7’ west/year
0o 46’ E
SCALE 1:100,000
Base map from U.S. Geological Survey 1:100,000 Digital Line Graphs (100K DLG)Universal Transverse Mercator Projection, Zone 15
North American Datum 1927 (NAD 27)Contour Interval 2 meters
Bathymetric Interval 1 meterNational Geodetic Vertical Datum 1929
1 0
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Kilometers
1 21 43 65 87 109 1211 13Miles
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.
Published2012 Publication
30 x 60 Minute Louisiana Geologic Quadrangle Index
50 miles0
50 kilometers0
90o92o94o
32o
30o
Tallulah
Bastrop
Natchez
Leesville
Winnfield
Black Bay
Alexandria
New Roads
Morgan City New Orleans
Natchitoches
Amite
GulfportCrowley
Bogalusa
Woodville
De Ridder Ville Platte
Port Arthur White Lake
PonchatoulaBaton RougeLake Charles
Monroe North
Monroe South
TerrebonneBay
AtchafalayaBay
ShreveportNorth
ShreveportSouth
MississippiRiver Delta
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Htd
TecheLobe
AtchafalayaLobe
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loce
ne
Hapd
LafourcheLobe
Mississippi River Delta
Description of Map Units
QUATERNARY SYSTEM
HOLOCENE
Atchafalaya River delta plain deposits—Deltaic deposits predominantly composed of distributary sand, delta-front and prodelta mud and clay, and natural levee silt and clay. These sediments lie upon the surfaces of the Teche delta lobe.
Distributary complex of the Lafourche delta lobe—deltaic deposits underlying the delta plain of the Lafourche delta lobe. They are composed of cyclically interbedded interdistributary peat and clay; natural levee silt and clay; distributary sand; and delta-front and prodelta mud and clay.
Deposits of the Teche delta lobe, Mississippi River—deltaic deposits underlying the delta plain of the Teche delta lobe. They are composed of cyclically interbedded interdistributary peat and clay; natural levee silt and clay; distributary sand; and delta-front and prodelta mud and clay. These sediments lie upon the surfaces of the Maringouin and other older delta lobes, which are either buried beneath younger delta lobes, submerged beneath the Gulf of Mexico, or a combination of both, and upon the surface of the underlying Prairie Allogroup.
Open water
Tidal flats
Shell Keys
Inferred contact
Streams and canals
Topographic contours
Bathymetric contours
The compilers gratefully acknowledge constructive technical review by L. D. Britsch and H. H. Roberts
References;
Surface GeologyBusch, R. E. Jr., W. C. Ward, and H. C. Skinner (compilers), 1974, Physiographic map of the Atchafalaya Basin and a portion of the Lower Red River Valley, Louisiana: U.S. Army Corps of Engineers, New Orleans, Louisiana, scale 1:250,000. Engineer Agency for Resources Inventories, 1973, Inventory of basic environmental data, south Louisiana, Mermentau River Basin to Chandeleur Sound, with special emphasis on the Atchafalaya Basin: Prepared for U.S. Army Corps of Engineers, New Orleans district.
Louisiana Oil Spill Coordinator's Office, 2007, Landsat Thematic Mapper Satellite Image 2005, UTM Zone 15 NAD83, LOSCO (2007) [landsat5tm_la_lsu_2005.sid]: Louisiana Oil Spill Coordinator's Office, Baton Rouge, LA.
May, J. R., L. D. Britsch, J. B. Dunbar, J. P. Rodriguez, and L. B. Wlosinski, 1984, Geological investigation of the Mississippi River deltaic plain: U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, Technical Report GL–84–15, prepared for U.S. Army Corps of Engineers, New Orleans district [unpaginated: oversized pages, including plates at 1:62,500 scale].
Saucier, R. T., 1994, Geomorphology and Quaternary geologic history of the Lower Mississippi Valley: volume 2, Vicksburg, Mississippi, U. S. Army Corps of Engineers, Waterways Experiment Station [unpaginated: 31 oversized pages, including 28 plates (1:250,000-scale)].
Saucier, R. T., and J. I. Snead (compilers), 1989, Quaternary geology of the Lower Mississippi Valley: in Morrison, R. B., ed., Quaternary non-glacial geology: conterminous United States: Boulder, Colorado, Geological Society of America, The Geology of North America, v. K-2, Plate 6, scale 1:1,100,000.
Smith, L. M., J. B. Dunbar, and L. D. Britsch, 1986, Geomorphological Investigation of the Atchafalaya Basin, Area West, Atchafalaya Delta, and Terrebonne Marsh: volume 2, Vicksburg, Mississippi, U. S. Army Corps of Engineers, Waterways Experiment Station [unpaginated: 54 oversized plates (1:24,000-scale)].
Van Lopik, J. R., 1955, Recent geology and geomorphic history of central coastal Louisiana: Unpublished PhD. dissertation, Louisiana State University, Baton Rouge, 195 p.
New mapping by the compilers based in part on LIDAR quarter-quadrangle images (source: Louisiana Federal Emergency Management Agency, and U.S. Army Corps of Engineers, St. Louis District), and digital orthophoto quarter quadrangle images, downloaded from the Atlas website http://atlas.lsu.edu); and on the U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS), Soil Survey Geographic (SSURGO) Database.
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