Roadside Geology of Louisiana

Overview

After Hurricane Katrina, the fanlike pile of sand, mud, and silt that formed near a breached levee was unique in the urban environment of New Orleans. Over the 7,500-year history of the modern Mississippi River delta, however, it was just another crevasse splay. Author Darwin Spearing explains the geologic forces behind the formation of the delta landscape, shedding light on the human struggle to control the powerful river that breaches its own levees and switches its own deltas. With sections on wetland loss and...
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Overview

After Hurricane Katrina, the fanlike pile of sand, mud, and silt that formed near a breached levee was unique in the urban environment of New Orleans. Over the 7,500-year history of the modern Mississippi River delta, however, it was just another crevasse splay. Author Darwin Spearing explains the geologic forces behind the formation of the delta landscape, shedding light on the human struggle to control the powerful river that breaches its own levees and switches its own deltas. With sections on wetland loss and land subsidence, Roadside Geology of Louisiana is a must-read for understanding the vulnerability of the Mississippi River delta to floods and hurricanes. First published in 1995, Roadside Geology of Louisiana is back in print by popular demand, with several updated sections. The introduction presents an overview of Louisiana's geologic history, and 57 road guides discuss the landforms visible from a car window.
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Editorial Reviews

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As Hurricane Katrina demonstrated so painfully, geologic history is still being made. The tumult and devastation of that event helped catalyze the updating of this classic Louisiana geology study, which was first published in 1995. Author Darwin Spearing enables readers to witness personally the momentous shifts in the state's underpinnings. The book's 57 roadside guides place you in the driver's seat as a witness to solid and less-than-solid earth. The book includes timely chapters on wetland loss and land subsidence.
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Product Details

  • ISBN-13: 9780878425303
  • Publisher: Mountain Press Publishing Company, Inc.
  • Publication date: 2/28/2007
  • Series: Roadside Geology Ser.
  • Edition number: 2
  • Pages: 225
  • Sales rank: 1,359,556
  • Product dimensions: 6.00 (w) x 8.90 (h) x 0.70 (d)

Table of Contents


Preface     ix
Acknowledgments     xiii
Geologic Overview     1
Geologic Time     1
Geologic History of Louisiana     5
Structure Below     17
Salt Domes     19
Oil and Gas     25
Minerals     30
Rivers in Motion     31
Dynamic Deltas     34
Mississippi Fan     39
How the Mississippi River Grew     41
Wetlands Loss     44
Southeastern Louisiana: Uneasy Rivers, Marshes, and Deltas     49
Atchafalaya Basin     50
New Orleans     57
Pontchartrain Causeway and Lake Pontchartrain     60
Interstate 10: Baton Rouge-Lafayette     64
Interstate 10: New Orleans-Baton Rouge     67
Interstate 10: New Orleans-Slidell-Mississippi     69
Interstate 55: Hammond (1-12)-Interstate 10-Lake Maurepas     69
US 90: Lafayette-Morgan City     70
US 90: Morgan City-Houma     73
US 90: New Orleans-Des Allemands-Raceland-Houma     75
Louisiana 1: Port Allen-Donaldsonville-Thibodaux-Raceland     76
Louisiana 1: Raceland-Golden Meadow-Grand Isle     78
Louisiana 14,Louisiana 329: Avery Island     83
Louisiana 23: New Orleans-Venice-Tidewater     85
Louisiana 83, Louisiana 319: Weeks Island-Cypremort State Park-Cypremort Point     92
Louisiana 675: Jefferson Island     94
Eastern Louisiana: Red Hills Above Pontchartrain     97
Interstate 12: Baton Rouge-Hammond-Slidell     101
Interstate 55: Hammond-Kentwood Quarry-Mississippi     103
Interstate 59: Mississippi-Slidell     107
US 61: Baton Rouge-St. Francisville-Mississippi     107
Louisiana 21, Louisiana 41: Mississippi-Bogalusa-Interstate 59     109
Southwestern Louisiana: Marsh to the Sea     111
Interstate 10: Lafayette-Jennings-Lake Charles-Sulphur-Texas     115
Louisiana 27: Sulphur-Hackberry-Holly Beach     121
Louisiana 27/14: Lake Charles-Oak Grove     124
Louisiana 82: Sabine Pass-Holly Beach-Cameron     126
Louisiana 82, US 167: Cameron-Pecan Island-Abbeville-Lafayette     129
Central Louisiana: Great Rocks and Great Rivers     133
Interstate 49: Alexandria-Opelousas-Lafayette     135
Interstate 49: Alexandria-Natchitoches     136
US 84: Tullos-Jena-Archie     140
US 84: Vidalia-Ferriday-Archie     141
US 84, Louisiana 6: Natchitoches-Winnfield Salt Dome-Winnfield     142
US 84, Louisiana 34: Winnfield-Tullos     147
US 165: Alexandria-Georgetown-Tullos     147
US 165: Alexandria-Oakdale-Iowa (I-10)     148
US 167: Alexandria-Winnfield     149
US 171: Lake Charles-DeRidder-Leesville-Many     150
Louisiana 378: Sam Houston Jones State Park     155
Louisiana 1: Baton Rouge-Simmesport-Marksville-Alexandria     157
Louisiana 6: Sabine River-Many-Natchitoches     161
Louisiana 8/28: Alexandria-Leesville-Sabine River     162
Louisiana 15: Ferriday-Three Rivers Area-Old River Control Structures-Lettsworth     163
Louisiana 28: Alexandria-Walters-US 84 Junction     168
Louisiana 107: Alexandria-Moncla Gap-Marksville     169
Louisiana 129: Features of the Floodplain     172
Northern Louisiana: Oldest Rocks, Highest Hills     177
Interstate 20: Texas-Shreveport-Monroe-Vicksburg     179
Interstate 49: Shreveport-Natchitoches     183
US 65: Tallulah-Ferriday     188
US 65: Tallulah-Lake Providence-Arkansas     189
US 79: Minden-Homer-Haynesville-Arkansas     191
US 165: Monroe-Bastrop-Arkansas     192
US 165: Monroe-Columbia-Tullos      193
US 167: Ruston-Dubach-Bernice-Arkansas     194
US 167: Ruston-Jonesboro-Winnfield     196
US 171: Shreveport-Mansfield-Many     196
Louisiana 1: Shreveport-Oil City-Arkansas     197
Louisiana 3: Shreveport-Benton-Plain Dealing-Arkansas     199
Louisiana 7: Dixie Inn-Cotton Valley-Springhill-Arkansas     199
Louisiana 15: Monroe-Winnsboro-Sicily Island-Clayton     200
Louisiana 17, Louisiana 134, Louisiana 577: Delhi-Poverty Point State Commemorative Area     201
Hurricanes Katrina and Rita, 2005     203
Glossary     205
Credits     210
References     211
Maps and Information     215
Index     217
About the Author     225
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