![](https://upload.wikimedia.org/wikipedia/commons/thumb/5/59/Louann_Salt_stratigraphic_column_for_Texas.png/300px-Louann_Salt_stratigraphic_column_for_Texas.png)
The Louann Salt is a widespread evaporite formation that formed in the Gulf of Mexico during the Callovian in the mid Jurassic.[1] The Louann formed in a rift as the South American and North American Plates separated, from an embayment of the Pacific Ocean.[1] The Louann underlies much of the northern Gulf Coast from Texas to the Florida panhandle and extends beneath large areas of the Gulf Coastal Plain of Mississippi, Louisiana and Texas.[2]
The Campeche Salt or Isthmian Salt is the contemporaneous salt layer that developed on the south margin of the rift. It extends from Campeche, Mexico, north along the west margin of the Campeche Bank north of the Yucatan Peninsula.[3] The Orca Basin is a distinctive brine pool on the Louisiana continental shelf.[4] One of the many salt domes derived from the Louann was the site of the Spindletop oil strike near Beaumont, Texas, in 1901.[2]
References
[edit]- ^ a b Salvador, Amos (1987). "Late Triassic‐Jurassic Paleogeography and Origin of Gulf of Mexico Basin" (PDF). AAPG Bulletin. 71 (4): 419‐451. Retrieved 2011-03-09.[permanent dead link]
- ^ a b Hyne, Norman J., Nontechnical guide to petroleum geology, exploration, drilling, and production, Pennwell Books, 2nd ed. p. 193 ISBN 978-0-87814-823-3
- ^ http://oceanexplorer.noaa.gov/explorations/02mexico/background/brinepool/media/gulf_salt.html Ocean Explorer
- ^ Pilcher, Robin S.; Blumstein, Raleigh D. (2007). "Brine volume and salt dissolution rates in Orca Basin, northeast Gulf of Mexico". AAPG Bulletin. 91 (6): 823–833. doi:10.1306/12180606049.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction