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    Roadside Geology of Louisiana

    by Darwin Spearing


    Paperback

    $24.00
    $24.00

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    • ISBN-13: 9780878425303
    • Publisher: Mountain Press
    • Publication date: 02/28/2007
    • Series: Roadside Geology Ser.
    • Pages: 225
    • Sales rank: 210,563
    • Product dimensions: 6.00(w) x 8.90(h) x 0.70(d)


    Darwin Spearing, author of Roadside Geology of Texas and coauthor of Roadside Geology of Wyoming, whetted his interest in the geology of Louisiana as a research geologist and exploration manager for Marathon Oil Company. Since then, he has served as a museum designer and a national park ranger. Spearing writes from his home in Grand Lake, Colorado

    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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    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 splay deposit. Author Darwin Spearing explains the geologic forces behind the formation of the delta, 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 Loiusiana's geological history, and 57 road guides discuss the landforms visible from a car window, including sand ridges, natural levees, oxbow lakes, and the Five Islands salt domes.

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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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