The Geological History of Louisiana Term Paper by Master Researcher

The Geological History of Louisiana
An overview of the geological history of Louisiana.
# 39866 | 900 words | 3 sources | MLA | 2002 | US
Published on Oct 14, 2003 in Geology and Geophysics (General)

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This paper explores the geological history of the state of Louisiana, from ancient times to today. The paper explains how Louisiana formed when the North and South American continents, which were once connected into one large land mass, began to separate. The paper describes the processes that created the sedimentary surface rock of Louisiana and notes that the forces that shaped Louisiana in the past are still at work today.

From the Paper:

"The oldest exposed rocks in the part of Louisiana that stayed with North America are small patches of late Cretaceous marine rocks that outcrop along the edges of the Prothro and Rayburns salt domes in Benville Parish1. About 80 million years ago, these rocks accumulated at the bottom of a shallow sea that covered Louisiana1. The next oldest rocks in Louisiana are exposed along the edge of a lake in Caddo Parish. These rocks accumulated there between 55 and 60 million years ago1.
"The surface of Louisiana is underlain by relatively young sedimentary rock that were deposited in or adjacent to rivers and deltas in an ancient coastal plain1. These deposits of rock indicate that there was a major river system here at least since the Gulf of Mexico began to form; the Mississippi River is probably that same ancient river system that deposited Louisiana's surface rock. The early Gulf of Mexico was a shallow sea that evaporated before reforming as the larger, deeper body of water known today, and this evaporation produced the salt domes that are so common in Louisiana. Most of these salt domes are buried under the ground, but they do protrude above the surface in some places, making the more ancient rock easier to view and analyze."

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