Advanced

Ordovician limestone in Hälsingland, Sweden

Löfgren, Anita LU and Laufeld, Sven (2007) In GFF 129. p.113-116
Abstract
Limestone boulders of Early and Middle Ordovician age occur along the Baltic coast of Sweden from c. 59 degrees N to c. 62.5 degrees N, apparently at a considerable distance from any known source rocks on land. We have investigated a limestone block from Lake Kultebo, at 61 degrees N, not far inland. The conodont elements enclosed in the rock are of Mid-Ordovician age and show that the block could not have been transported any considerable distance from the west, as has previously been suggested. The new finds of presumed glacially transported boulders of Early Ordovician age confirm earlier reports of such rocks in the area. The conodont faunas here indicate that the boulders could well have been derived locally, e.g., from the floor of... (More)
Limestone boulders of Early and Middle Ordovician age occur along the Baltic coast of Sweden from c. 59 degrees N to c. 62.5 degrees N, apparently at a considerable distance from any known source rocks on land. We have investigated a limestone block from Lake Kultebo, at 61 degrees N, not far inland. The conodont elements enclosed in the rock are of Mid-Ordovician age and show that the block could not have been transported any considerable distance from the west, as has previously been suggested. The new finds of presumed glacially transported boulders of Early Ordovician age confirm earlier reports of such rocks in the area. The conodont faunas here indicate that the boulders could well have been derived locally, e.g., from the floor of the SW Gulf of Bothnia, the northern part of the Baltic Sea. We conclude that at least as far as 61 degrees N, there are probably larger areas of parautochtonous Lower and Middle Ordovician rocks than was earlier assumed. (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
conodonts, limestone, Hälsingland, Ordovician, Sweden
in
GFF
volume
129
pages
113 - 116
publisher
Geological Society of Sweden
external identifiers
  • wos:000248408400007
  • scopus:34547099308
ISSN
2000-0863
language
English
LU publication?
yes
id
e0f73f34-ab93-4d1c-bce0-d233e5517100 (old id 688043)
alternative location
http://www.gff-online.se/site/article.asp?articleID=921
date added to LUP
2007-12-13 09:47:07
date last changed
2017-01-01 05:16:19
@article{e0f73f34-ab93-4d1c-bce0-d233e5517100,
  abstract     = {Limestone boulders of Early and Middle Ordovician age occur along the Baltic coast of Sweden from c. 59 degrees N to c. 62.5 degrees N, apparently at a considerable distance from any known source rocks on land. We have investigated a limestone block from Lake Kultebo, at 61 degrees N, not far inland. The conodont elements enclosed in the rock are of Mid-Ordovician age and show that the block could not have been transported any considerable distance from the west, as has previously been suggested. The new finds of presumed glacially transported boulders of Early Ordovician age confirm earlier reports of such rocks in the area. The conodont faunas here indicate that the boulders could well have been derived locally, e.g., from the floor of the SW Gulf of Bothnia, the northern part of the Baltic Sea. We conclude that at least as far as 61 degrees N, there are probably larger areas of parautochtonous Lower and Middle Ordovician rocks than was earlier assumed.},
  author       = {Löfgren, Anita and Laufeld, Sven},
  issn         = {2000-0863},
  keyword      = {conodonts,limestone,Hälsingland,Ordovician,Sweden},
  language     = {eng},
  pages        = {113--116},
  publisher    = {Geological Society of Sweden},
  series       = {GFF},
  title        = {Ordovician limestone in Hälsingland, Sweden},
  volume       = {129},
  year         = {2007},
}