Advanced

Tidal facies in the Upper Silurian Oved-Ramsasa Group of Scania, Sweden: Linkages of radial and cerebroid ooids and evaporite tracers to subtidal, lagoonal environment

Wigforss-Lange, Jane LU (2007) In GFF 129. p.7-16
Abstract
A sequence in the Upper Silurian Oved-Ramsasa Group in Scania, Sweden has been investigated sedimentologically and geochemically. This sequence represents a regressive marine succession. The sedimentary structures and the rapid vertical changes in lithologies and the lateral variability of beds indicate a tide-dominated sedimentation in a shallow epeiric sea, where even small oscillations in sea water level and water energy affected sedimentation. The succession of facies shows an upward transition from open marine shallow subtidal/intertidal to lagoonal subtidal/intertidal conditions. These facies changes are accompanied by faunal changes and shifts in major and trace element concentrations. Of particular interest are the presence of... (More)
A sequence in the Upper Silurian Oved-Ramsasa Group in Scania, Sweden has been investigated sedimentologically and geochemically. This sequence represents a regressive marine succession. The sedimentary structures and the rapid vertical changes in lithologies and the lateral variability of beds indicate a tide-dominated sedimentation in a shallow epeiric sea, where even small oscillations in sea water level and water energy affected sedimentation. The succession of facies shows an upward transition from open marine shallow subtidal/intertidal to lagoonal subtidal/intertidal conditions. These facies changes are accompanied by faunal changes and shifts in major and trace element concentrations. Of particular interest are the presence of radial and cerebroid ooids and evaporite tracers. The radial fabric of the ooids is regarded as primary and it is suggested that these ooids formed in suspension, in the low-energy subtidal lagoonal environment. Implications for a restriction in water circulation and progressive evaporation, coinciding with the ooid formation are seen in associated sediments of this facies. A salinity increase is demonstrated by the presence of BaSO4 and elevated values of MgO, NaO and Ba. A high Zr and SiO2 content, most probably derived from eolian dust, indicate increased aridity and a relative decrease of water transported elastics. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Upper Silurian, trace elements, major and, evaporites, cerebroid ooids, tidal facies, radial ooids, Sweden, Scania, Oved-Ramssa Group
in
GFF
volume
129
pages
7 - 16
publisher
Geological Society of Sweden
external identifiers
  • wos:000246293500002
  • scopus:34248394721
ISSN
2000-0863
language
English
LU publication?
yes
id
96493a85-2417-4639-87e9-ab2e4df1f515 (old id 662666)
date added to LUP
2007-12-19 11:30:56
date last changed
2017-09-03 03:49:17
@article{96493a85-2417-4639-87e9-ab2e4df1f515,
  abstract     = {A sequence in the Upper Silurian Oved-Ramsasa Group in Scania, Sweden has been investigated sedimentologically and geochemically. This sequence represents a regressive marine succession. The sedimentary structures and the rapid vertical changes in lithologies and the lateral variability of beds indicate a tide-dominated sedimentation in a shallow epeiric sea, where even small oscillations in sea water level and water energy affected sedimentation. The succession of facies shows an upward transition from open marine shallow subtidal/intertidal to lagoonal subtidal/intertidal conditions. These facies changes are accompanied by faunal changes and shifts in major and trace element concentrations. Of particular interest are the presence of radial and cerebroid ooids and evaporite tracers. The radial fabric of the ooids is regarded as primary and it is suggested that these ooids formed in suspension, in the low-energy subtidal lagoonal environment. Implications for a restriction in water circulation and progressive evaporation, coinciding with the ooid formation are seen in associated sediments of this facies. A salinity increase is demonstrated by the presence of BaSO4 and elevated values of MgO, NaO and Ba. A high Zr and SiO2 content, most probably derived from eolian dust, indicate increased aridity and a relative decrease of water transported elastics.},
  author       = {Wigforss-Lange, Jane},
  issn         = {2000-0863},
  keyword      = {Upper Silurian,trace elements,major and,evaporites,cerebroid ooids,tidal facies,radial ooids,Sweden,Scania,Oved-Ramssa Group},
  language     = {eng},
  pages        = {7--16},
  publisher    = {Geological Society of Sweden},
  series       = {GFF},
  title        = {Tidal facies in the Upper Silurian Oved-Ramsasa Group of Scania, Sweden: Linkages of radial and cerebroid ooids and evaporite tracers to subtidal, lagoonal environment},
  volume       = {129},
  year         = {2007},
}