30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES · 2019-07-16 · 30 x 60 Minute Geologic Quadrangles in...
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D U U D U D U D U D D U U D U D ? Port Arthur West Port Authur Sabine Pass Sabine Port Neches Atreco Johnsons Bayou Landing Louisiana Point Texas Point ORANGE CO ORANGE CO JEFFERSON CO CAMERON PARISH JEFFERSON CO CAMERON PARISH Wildcat Ridge Mesquite Point Blue Buck Point Humble Island TEXAS LOUISIANA Garrison Ridge Garner Ridge Salt Work Ridge Garner Ridge Hackberry Ridge Sanders Ridge Sabine Island Pines Ridge Eli Ridge Ridge Smith Johnsons Bayou Hackberry Vincent Island Lost Ridge Hog Island Back Ridge Rabbit Island St. Johns Island Monkey Island CALCASIEU SHIP CHANNEL Back Ridge Cameron High Island Dans Ridge Oak Grove Ridge Eugene Island Pumpkin Ridge Chenier Ridge Little Oak Grove Creole Front Ridge Savane Neuville Island Pichot Ridge Sweet Lake Commissary Point Jubert Point G rand Lake Ridge L o w er M u d L ake M e r m e n tau R i v e r Kings Bayo u Bayou Laba u v e Broussard Lake Boudreaux Lake East Prong S o u t h P r o n g N o rt h P r o n g Mangrove Bayou G r a n d B a y o u Lamberty Bayou Creole Canal WATERWAY North Canal Willow Lake No 1 Canal No 2 Canal No 3 Canal Sweet Lake Canal Sweet Lake Blind Lake INTRACOASTAL B a y o u B o i s C o r r i n e Oyster Lake O y s t e r B a y o u W e s t F o rk E a s t F o r k West Cove Canal East Cove C a l c a s i e u L a k e West Cove Long Point Lake Wild Cow Lake Starks North Starks North Canal Canal Rycade Canal East Fork S t a r k s B a y o u Pirogue Ditch Vincent Lake Starks Central Canal South Canal O l d N orth B a y o u Beach Canal Starks E a s t B a y o u Old Old Canal N o r t h B ay o u Hamilton Lake Magnolia Vacuum Canal Starks Burton Sutton Canal Greens Lake Right Prong Black Bayou Grays Canal B l a c k B a y ou O l d R i v e r B a y o u Old River Cove INTRACOASTAL WATERWAY Neches River N i g B a y o u M o l a s s e s B a y o u N E C H E S CANAL D e e p B a y o u J o h n s o n ’ s B a y o u Willow B a you Madame Johnson’s Bayou Lake Deep Bayou Canal Willow Bayou Canal G r e e n s Ba y o u E a s t P a s s Pole Lake Tex a s Ba y o u PORT ART H U R CANAL Mud Lake Lost Lake Round Lake INTRACOASTAL WATERWAY Big Hill Reservoir Taylor B a y o u S A B I N E L A K E C A L C A S I E U P A S S G U L F O F M E X I C O S A B I N E P A SS M u d L a k e Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Ppbe Hcm Hcm Hua Hua Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hm Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Hmr Pper Pper Pper Pper Pper Pper Ppbe Pper Pper Pper Pper Ppbe 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 National Geodetic Vertical Datum 1929 Miles 13 11 12 9 10 7 8 5 6 3 4 1 2 1 Kilometers 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 1 PORT ARTHUR, TEXAS/LOUISIANA 29093-F1-TM – 100K 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. 30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES 15' 30' 45' 30°00' 94°00' 45' 29°30' 94°00' 45' 30' 15' 93°00' 29°30' 45' 30°00' 93°00' Cheniers represent new mapping by the compiler based 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 (originator: Louisiana Oil Spill Coordinator's Office) . PORT ARTHUR, TEXAS/LOUISIANA Port Arthur 30 x 60 Minute Geologic Quadrangle 2005 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 Copyright ©2005 by the Louisiana Geological Survey Geology by: Paul V. Heinrich GIS compilation by: R. Hampton Peele and Prammagnaanam Vijaiamernath Cartography by: John Snead and Lisa Pond Hua Hm Ppbe Description of Map Units HOLOCENE Holocene undifferentiated alluvium—undifferentiated deposits of small upland streams: alluvial deposits of minor streams and creeks, of varying textures, filling valleys incised into older deposits. Small river meander-belt deposits—point-bar and associated overbank deposits underlying meander belts of the Sabine River. These deposits typically consist of gray to reddish brown sand, silt, silty clay, and sandy clay. Mermentau Alloformation—Complexly interfingering and interbedded, dark-colored marine muds, sandy and shelly beach deposits, organic marsh clays, and lacustrine and bay muds. These deposits bury the surfaces of the Prairie and Deweyville Allogroups. The Louisiana chenier plain forms the surface of the Mermentau Alloformation. The Alloformation extends westward along the coast into Texas as far west as Galveston Bay. Eastward, it extends almost to the west shore of Vermilion Bay, where it interfingers with deltaic sediments of the Teche delta lobe. Seaward of the shoreline, the Mermentau Alloformation grades laterally into unnamed marine sediments. Holocene coastal ridges (cheniers)—Sandy and/or shelly ridges, of predominantly coast-parallel orientation, delineated on portions of the surface of the Holocene Mermentau Alloformation. They comprise beach ridges separated from each other by extensive tracts of coastal marsh. The areas mapped may include some ridges of other origin in places. PLEISTOCENE PRAIRIE ALLOGROUP A diverse depositional sequence of late to middle Pleistocene deposits of the Mississippi River, its tributaries, and coastal plain streams; includes terraced, fluvial (meander-belt, backswamp, and braided-stream), colluvial, estuarine, deltaic, and marine units deposited over a considerable part of the late Pleistocene (Wisconsin to Sangamon). Surfaces generally show little dissection and are topographically higher than the Holocene units. Multiple levels are recognized along alluvial valleys and coast-parallel trends. The Prairie is divided into two temporal phases of deposition. PRAIRIE ALLOGROUP, LATE SANGAMON—younger of the Prairie Allogroup temporal phases. Alluvial deposits of ancestral late Pleistocene streams. In the coast-parallel Prairie the unit consists of meander-belt deposits of the late Pleistocene Mississippi River, and deposits of the late Pleistocene coastal plain streams. Deposits associated with these valleys are commonly found within the upper portions of the drainage basins. Sediments at the top of the unit range from sand to clay. PRAIRIE ALLOGROUP, EARLY SANGAMON— older of the Prairie Allogroup temporal phases. A diverse depositional sequence of flood plain, meander-belt, and backswamp deposits of the middle Pleistocene ancestral Mississippi River, Red River, local fluvial equivalents of tributary streams, and coastal plain streams. The sediments are generally clay, silty clay loam, or sandy clay loam, but may include some sand and gravel in deposits of relict channels. Beaumont Alloformation—coastal plain deposits of late to middle Pleistocene streams; the oldest alloformation and topographically highest surface of the Prairie Allogroup units of southwestern Louisiana. relict Pleistocene coastal ridges—low-lying ridges delineated on the surface of the Beaumont Alloformation. Some of these ridges are coast-parallel and others trend obliquely to the coast and radiate from the end of known meander belts. Open Water Contact—includes inferred contacts. Fault—dashed where inferred; dotted where concealed; queried where indefinite. Streams Roads Topographic contours Area uplifted by salt dome 1934 Pleistocene Holocene Published (2005) White Lake Port Arthur Lake Charles De Ridder Gulfport 30 x 60 Minute Geologic Quadrangles in production L O U I S I A N A Ponchatoula Ville Platte Bogalusa Amite 50 miles 0 90 92 94 32 30 Crowley Baton Rouge New Roads Pper Hmr Pper Hm Hua Hsm Ppbe coastal plain Chacko J. John Director & State Geologist Correlation of Map Units Hmr Hsm Hsm
Transcript of 30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES · 2019-07-16 · 30 x 60 Minute Geologic Quadrangles in...
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Port Arthur
West Port Authur
Sabine Pass
Sabine
Port Neches Atreco
Johnsons Bayou Landing
Louisiana Point
Texas Point
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AN
GE C
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AN
GE C
O
JEFFERSO
N C
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CA
MER
ON
PA
RIS
H
JEFFERSON CO
CAMERON PARISH
Wild
cat
Ridge
Mesquite Point
Blue Buck Point
Humble
Island
TEXAS
LOUISIANA
Garrison R
idge
Garner Ridge Salt Work Ridge
Garner Ridge
Hackberry Ridge
Sanders Ridge
Sabine Island
Pines Ridge
Eli Rid
ge
Ridge
Smith
Johnsons Bayou
Hackberry
Vincent Island
Lost Ridge
Hog
Isla
nd
Back Ridge
Rabbit Island
St. Johns Is
land
Monkey Island
CA
LCA
SIE
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SH
IP
CH
AN
NE
L
Back Ridge
Cameron
High Island
Dans Ridge
Oak Grove Ridge
Eugene Island
Pumpkin Ridge
Chenier Ridge
Little
Oak Grove
Creole
Front Ridge
Savane Neuville Island
Pichot Ridge
Sweet Lake
Commissary Point
Jubert Point
Grand Lake Ridge
Lower Mud Lake
Mermentau Rive
r
Kings Bayou
Bayou Labauve
Broussard Lake
Boudreaux Lake
East Prong
South Prong
North Pron
g
Mangrove Bayou
Grand Bayou
Lambe
rty
Bayou
Creole
Can
al
WATERWAY
Nor
th C
anal
Willow Lake
No 1 Canal
No 2 Canal
No 3 Canal
Sweet Lake Canal Sweet Lake
Blind Lake
INTRA
COASTA
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Bayou Bois
Cor
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Oyster Lake
Oyster
Bayou
West
Fork
East
For
k
West Cove Canal
East Cove
Ca l c
as i
eu
La
ke
West Cove
Long Point Lake
Wild Cow Lake
Starks North Starks North Canal
Can
al
Rycade Canal
East Fork
Star
ks Bayou
Pirogue
Dit
ch
Vincent Lake
Starks Central Canal
South Canal
Old
North
Bayou
Bea
ch
Can
al
Starks
East Bayou
Old
Old
Canal
North
Bayo
u
Hamilton Lake
Magn
olia Vacuum
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Starks
Bur
ton S
utto
n C
anal
Greens Lake
Rig
ht
Pro
ng
Black Bayou
Gra
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Can
al Blac
k
Bayou O
ld Rive
r Bay
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Old River Cove
INTRACOASTAL
WATERWAY
Neches
River
Nig B
ayou
Mol
asse
s
Bay
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NECHES
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Deep
Bayou
Johnson’s Bayou
Will
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ayou
Madame Johnson’s Bayou Lake
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Bay
ou
Can
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Willow Bayou Canal
Green
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ayou
East
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Pole Lake
Texas Bayo
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RT
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UR
CANAL Mud Lake
Lost Lake
Round Lake
INTRACOASTAL
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ERW
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Big Hill Reservoir
Taylor Bayou
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GU L F O F M E X I C O
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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
National Geodetic Vertical Datum 1929
Miles 13 11 12 9 10 7 8 5 6 3 4 1 2 1
Kilometers 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0
0 1
PORT ARTHUR, TEXAS/LOUISIANA 29093-F1-TM – 100K
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.
30 x 60 MINUTE GEOLOGIC QUADRANGLE SERIES
15' 30' 45' 30°00' 94°00'
45'
29°30' 94°00'
45' 30' 15' 93°00' 29°30'
45'
30°00' 93°00'
Cheniers represent new mapping by the compiler based 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 (originator: Louisiana Oil Spill Coordinator's Office) .
PORT ARTHUR, TEXAS/LOUISIANA
Port Arthur 30 x 60 Minute Geologic Quadrangle 2005
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 Copyright ©2005 by the Louisiana Geological Survey
Geology by: Paul V. Heinrich
GIS compilation by: R. Hampton Peele and Prammagnaanam Vijaiamernath
Cartography by: John Snead and Lisa Pond
Hua
Hm
Ppbe
Description of Map Units
HOLOCENE
Holocene undifferentiated alluvium—undifferentiated deposits of small upland streams: alluvial deposits of minor streams and creeks, of varying textures, filling valleys incised into older deposits.
Small river meander-belt deposits—point-bar and associated overbank deposits underlying meander belts of the Sabine River. These deposits typically consist of gray to reddish brown sand, silt, silty clay, and sandy clay.
Mermentau Alloformation—Complexly interfingering and interbedded, dark-colored marine muds, sandy and shelly beach deposits, organic marsh clays, and lacustrine and bay muds. These deposits bury the surfaces of the Prairie and Deweyville Allogroups. The Louisiana chenier plain forms the surface of the Mermentau Alloformation. The Alloformation extends westward along the coast into Texas as far west as Galveston Bay. Eastward, it extends almost to the west shore of Vermilion Bay, where it interfingers with deltaic sediments of the Teche delta lobe. Seaward of the shoreline, the Mermentau Alloformation grades laterally into unnamed marine sediments.
Holocene coastal ridges (cheniers)—Sandy and/or shelly ridges, of predominantly coast-parallel orientation, delineated on portions of the surface of the Holocene Mermentau Alloformation. They comprise beach ridges separated from each other by extensive tracts of coastal marsh. The areas mapped may include some ridges of other origin in places.
PLEISTOCENE
PRAIRIE ALLOGROUP
A diverse depositional sequence of late to middle Pleistocene deposits of the Mississippi River, its tributaries, and coastal plain streams; includes terraced, fluvial (meander-belt, backswamp, and braided-stream), colluvial, estuarine, deltaic, and marine units deposited over a considerable part of the late Pleistocene (Wisconsin to Sangamon). Surfaces generally show little dissection and are topographically higher than the Holocene units. Multiple levels are recognized along alluvial valleys and coast-parallel trends. The Prairie is divided into two temporal phases of deposition.
PRAIRIE ALLOGROUP, LATE SANGAMON—younger of the Prairie Allogroup temporal phases. Alluvial deposits of ancestral late Pleistocene streams. In the coast-parallel Prairie the unit consists of meander-belt deposits of the late Pleistocene Mississippi River, and deposits of the late Pleistocene coastal plain streams. Deposits associated with these valleys are commonly found within the upper portions of the drainage basins. Sediments at the top of the unit range from sand to clay.
PRAIRIE ALLOGROUP, EARLY SANGAMON— older of the Prairie Allogroup temporal phases. A diverse depositional sequence of flood plain, meander-belt, and backswamp deposits of the middle Pleistocene ancestral Mississippi River, Red River, local fluvial equivalents of tributary streams, and coastal plain streams. The sediments are generally clay, silty clay loam, or sandy clay loam, but may include some sand and gravel in deposits of relict channels.
Beaumont Alloformation—coastal plain deposits of late to middle Pleistocene streams; the oldest alloformation and topographically highest surface of the Prairie Allogroup units of southwestern Louisiana.
relict Pleistocene coastal ridges—low-lying ridges delineated on the surface of the Beaumont Alloformation. Some of these ridges are coast-parallel and others trend obliquely to the coast and radiate from the end of known meander belts.
Open Water
Contact—includes inferred contacts.
Fault—dashed where inferred; dotted where concealed; queried where indefinite.
Streams
Roads
Topographic contours
Area uplifted by salt dome
1934
Ple
isto
cen
e
Ho
loce
ne
Published (2005)
White Lake Port Arthur
Lake Charles
De Ridder
Gulfport
30 x 60 Minute Geologic Quadrangles
in production
L O U I S I A N A
Ponchatoula
Ville Platte Bogalusa Amite
50 miles 0
90 92 94
32
30
Crowley Baton Rouge
New Roads
Pper
Hmr
Pper
Hm Hua Hsm
Ppbe
coastal plain
Chacko J. John
Director & State Geologist
Correlation of Map Units
Hmr
Hsm
Hsm
