la history ch 1 & 2 vocab-first 25
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Created by:
mschnebelen on September 26, 2011
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25 terms
Terms | Definitions |
|---|---|
 aquifer | an underground water reservoir |
| bar | an underwater barrier of mud in a river |
| barrier island | an island running parallel to the mainland, built up by the actions of waves and currents, that serves to protect the coast from erosion |
| brackish | fresh and saltwater mixed together |
| chenier | a ridge of high ground in the coastal marsh that runs paralell to the coastline |
| coastal erosion | the loss of coastal land |
| coastal marsh | wet grassland along a coastline |
| delta | a landform shaped by sediment deposits at the mouth of the river or tidal inlet |
| flood plain | a plain bordering a river and subject to flooding |
| mud lump | mound like formations at the mouth's river caused by pressure from depositing sediment |
| oxbow lake | a crescent shaped lake formed when a river meander is cut off from the main channel |
| point bar | sediment built up in a turn of a river that forces the current to erode the opposite bank |
| salt dome | a tall, vertical column of salt squeezed up through the ground by extreme pressure |
| saltwater intrusion | saltwater movement into a marsh |
| sediment | suspended particles of dirt and sand carried by river water |
| terrace | an elevated ridge of an old river bend |
| water table | the depth in the ground at which water is located |
| coastal lake | a lake formed along the Gulf Coast when a chenier slows the flow of a river into the Gulf |
| coniferous | evergreen cone-bearing trees or shrubs |
| decidous | sheds seasonally or at a certain stage of development |
| depression lake | a lake created when land sinks along a fault |
| distributary | a branch of a river that flows away from the mainstream |
| raft lake | a lake formed by a flooding bayou in a low spot of land |
| relief | the difference in elevation between the highest and lowest points of an area |
| storm surge | a wall of ocean water that moves inland |
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