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Palaeogeography and sedimentation models for the Whitehill-Irati sea during the Permian of South America and southern Africa

Remelin, Mika (1994) In Dissertations in Geology at Lund University
Department of Geology
Abstract
The endemic mesosaurid reptiles of the Whitehill-Irati sea in southern Africa and South America during the Permian were studied with preference for the Namibian material. To date three valid mesosaurid species have been described of which two occur on both continents. These mesosaurid aquatic reptiles were among the first evidence used to support the theory of continental drift at the beginning of this century.
A new theory, for the deposition of the Irati and Whitehill Shale Formations and for the outline of the connection between the Paraná (South America) and the Karoo basins (southern Africa) during the deposition of the two formations, is presented. Marine conditions prevailed in the Whitehill-Irati sea during Upper Dwyka times but... (More)
The endemic mesosaurid reptiles of the Whitehill-Irati sea in southern Africa and South America during the Permian were studied with preference for the Namibian material. To date three valid mesosaurid species have been described of which two occur on both continents. These mesosaurid aquatic reptiles were among the first evidence used to support the theory of continental drift at the beginning of this century.
A new theory, for the deposition of the Irati and Whitehill Shale Formations and for the outline of the connection between the Paraná (South America) and the Karoo basins (southern Africa) during the deposition of the two formations, is presented. Marine conditions prevailed in the Whitehill-Irati sea during Upper Dwyka times but turned into brackish before the deposition of the Irati and Whitehill Shale Formations probably due to crustal instability at the southern margins of the basins. A silled basin developed and anoxic bottom conditions appeared as a result of the restricted water circulation and stratification of the water body. (Less)
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author
Remelin, Mika
supervisor
organization
year
type
H1 - Master's Degree (One Year)
subject
keywords
mesosaurid reptiles, mesosaurus tenuidens, stereosternum tumidum, brazilosaurus sanpauloensis, endemic, aquatic, continental drift, Whitehill Shale Formation, Irati Shale Formation, Parana basin, Karoo basin, Namibia, anoxic, stratification, Ecca Group, Karoo sequence, palaeogeography, sedimentation models
publication/series
Dissertations in Geology at Lund University
report number
60
funder
Johan Christian Mobergs resestipendiefond
funder
Lundabygdens Sparbanks stiftelse
funder
Lund Institute of Historical Geology and Paleontology
language
English
id
2370065
date added to LUP
2012-10-22 10:22:28
date last changed
2012-10-22 10:22:28
@misc{2370065,
  abstract     = {The endemic mesosaurid reptiles of the Whitehill-Irati sea in southern Africa and South America during the Permian were studied with preference for the Namibian material. To date three valid mesosaurid species have been described of which two occur on both continents. These mesosaurid aquatic reptiles were among the first evidence used to support the theory of continental drift at the beginning of this century.
A new theory, for the deposition of the Irati and Whitehill Shale Formations and for the outline of the connection between the Paraná (South America) and the Karoo basins (southern Africa) during the deposition of the two formations, is presented. Marine conditions prevailed in the Whitehill-Irati sea during Upper Dwyka times but turned into brackish before the deposition of the Irati and Whitehill Shale Formations probably due to crustal instability at the southern margins of the basins. A silled basin developed and anoxic bottom conditions appeared as a result of the restricted water circulation and stratification of the water body.},
  author       = {Remelin, Mika},
  keyword      = {mesosaurid reptiles,mesosaurus tenuidens,stereosternum tumidum,brazilosaurus sanpauloensis,endemic,aquatic,continental drift,Whitehill Shale Formation,Irati Shale Formation,Parana basin,Karoo basin,Namibia,anoxic,stratification,Ecca Group,Karoo sequence,palaeogeography,sedimentation models},
  language     = {eng},
  note         = {Student Paper},
  series       = {Dissertations in Geology at Lund University},
  title        = {Palaeogeography and sedimentation models for the Whitehill-Irati sea during the Permian of South America and southern Africa},
  year         = {1994},
}