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The Lower Ordovician Tøyen Shale succession in the Fågelsång-3 drill core, Scania, Sweden

Maletz, Jörg LU and Ahlberg, Per LU (2018) In GFF 140(4). p.293-305
Abstract

The Ordovician Tøyen Shale Formation of the recently retrieved Fågelsång-3 drill core provides some important information on the graptolite biostratigraphy of the unit and its completeness in the region. The drill core reached downwards into the Kiaerograptus supremus Biozone of late Tremadocian age. Above a major fault zone, faunas with a number of specimens referred to Pseudophyllograptus densus are indicative of a late Dapingian age. Rare specimens of Azygograptus sp. also help constrain the age. The presence of Arienigraptus zhejiangensis indicates that the base of the Darriwilian Komstad Limestone Formation is of Levisograptus austrodentatus Biozone age. Specimens of Tetragraptus cor and Levisograptus sinicus in a shale bed within... (More)

The Ordovician Tøyen Shale Formation of the recently retrieved Fågelsång-3 drill core provides some important information on the graptolite biostratigraphy of the unit and its completeness in the region. The drill core reached downwards into the Kiaerograptus supremus Biozone of late Tremadocian age. Above a major fault zone, faunas with a number of specimens referred to Pseudophyllograptus densus are indicative of a late Dapingian age. Rare specimens of Azygograptus sp. also help constrain the age. The presence of Arienigraptus zhejiangensis indicates that the base of the Darriwilian Komstad Limestone Formation is of Levisograptus austrodentatus Biozone age. Specimens of Tetragraptus cor and Levisograptus sinicus in a shale bed within the lower part of the Komstad Limestone Formation can be referred to the upper subzone of the L. austrodentatus Biozone, the Levisograptus sinicus Subzone. This fauna represents the youngest graptolite fauna beneath the massive Komstad Limestone Formation. The Tøyen Shale Formation can be shown to be highly incomplete in Scania, possibly due to post-depositional tectonic deformation and faulting.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biostratigraphy, Graptolites, Lower Ordovician, Middle Ordovician, Scania, Sweden
in
GFF
volume
140
issue
4
pages
293 - 305
publisher
Taylor & Francis
external identifiers
  • scopus:85048043860
ISSN
1103-5897
DOI
10.1080/11035897.2018.1470201
language
English
LU publication?
yes
id
e9c226da-267a-4a2c-a4fe-e9dd013e750b
date added to LUP
2018-06-18 15:57:58
date last changed
2019-10-15 06:40:29
@article{e9c226da-267a-4a2c-a4fe-e9dd013e750b,
  abstract     = {<p>The Ordovician Tøyen Shale Formation of the recently retrieved Fågelsång-3 drill core provides some important information on the graptolite biostratigraphy of the unit and its completeness in the region. The drill core reached downwards into the Kiaerograptus supremus Biozone of late Tremadocian age. Above a major fault zone, faunas with a number of specimens referred to Pseudophyllograptus densus are indicative of a late Dapingian age. Rare specimens of Azygograptus sp. also help constrain the age. The presence of Arienigraptus zhejiangensis indicates that the base of the Darriwilian Komstad Limestone Formation is of Levisograptus austrodentatus Biozone age. Specimens of Tetragraptus cor and Levisograptus sinicus in a shale bed within the lower part of the Komstad Limestone Formation can be referred to the upper subzone of the L. austrodentatus Biozone, the Levisograptus sinicus Subzone. This fauna represents the youngest graptolite fauna beneath the massive Komstad Limestone Formation. The Tøyen Shale Formation can be shown to be highly incomplete in Scania, possibly due to post-depositional tectonic deformation and faulting.</p>},
  author       = {Maletz, Jörg and Ahlberg, Per},
  issn         = {1103-5897},
  keyword      = {biostratigraphy,Graptolites,Lower Ordovician,Middle Ordovician,Scania,Sweden},
  language     = {eng},
  month        = {06},
  number       = {4},
  pages        = {293--305},
  publisher    = {Taylor & Francis},
  series       = {GFF},
  title        = {The Lower Ordovician Tøyen Shale succession in the Fågelsång-3 drill core, Scania, Sweden},
  url          = {http://dx.doi.org/10.1080/11035897.2018.1470201},
  volume       = {140},
  year         = {2018},
}