Blink to Talk About MS River Mud Lumps at Next Plaq. Historical Meeting
News Staff
Tuesday, March 29, 2022
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Mud Lumps are rare geological phenomena which occur only in Plaquemines Parish. They were originally described by Spanish explorer Cabeza de Vaca in 1528 when he discovered the mouth of the Mississippi. Several books have been written on Plaquemines’ mud lumps. According to Geological Bulletin #8 by the Louisiana Department of Conservation, historically maximum mud lump heights were reported as high as 25 feet above sea level and as large as 30 acres during the nineteenth century. They can appear or disappear sud-denly. In 1872 a mud lump raised a sunken ship sunk in ten feet of water with a cargo of heavy stone completely out of the water. Though mud lump activity at the mouth of the river has diminished with the building of jetties, mud lumps and mud lump vents still occur.