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The early Katian (Late Ordovician) reefs near Saku, northern Estonia and the age of the Saku Member, Vasalemma Formation

Kroger, Bjorn; Hints, Linda; Lehnert, Oliver LU ; Mannik, Peep and Joachimski, Michael (2014) In Estonian Journal of Earth Sciences 63(4). p.271-276
Abstract
Reefs developed simultaneously during the latest Sandbian/earliest Katian global Guttenberg Isotopic Carbon Excursion (GICE) in several places across Baltoscandia. Latest Sandbian/earliest Katian patch reefs are also described from the Vasalemma Formation of northern Estonia. The Saku Member of the Vasalemma Formation was previously considered as a proximal facies related to the reefs. However, the Saku Member clearly post-dates the GICE interval and ranges from the latest Keila to Rakvere in terms of regional stages. Some small reefs occur in direct proximity to the stratotype of the Saku Member. New delta C-13 data from the stratotype section and the adjacent reefs indicate that these reefs developed before the deposition of the Saku... (More)
Reefs developed simultaneously during the latest Sandbian/earliest Katian global Guttenberg Isotopic Carbon Excursion (GICE) in several places across Baltoscandia. Latest Sandbian/earliest Katian patch reefs are also described from the Vasalemma Formation of northern Estonia. The Saku Member of the Vasalemma Formation was previously considered as a proximal facies related to the reefs. However, the Saku Member clearly post-dates the GICE interval and ranges from the latest Keila to Rakvere in terms of regional stages. Some small reefs occur in direct proximity to the stratotype of the Saku Member. New delta C-13 data from the stratotype section and the adjacent reefs indicate that these reefs developed before the deposition of the Saku Member during the GICE interval. The chemostratigraphic data support the hypothesis of a short-time Baltoscandian reef growth event that terminated during the GICE interval. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
carbon isotopes, GICE excursion, Kope excursion, Ordovician reefs, Oandu, Stage, Estonia
in
Estonian Journal of Earth Sciences
volume
63
issue
4
pages
271 - 276
publisher
Estonian Academy Publishers
external identifiers
  • wos:000346296000015
  • scopus:84919395002
ISSN
1736-7557
DOI
10.3176/earth.2014.30
language
English
LU publication?
yes
id
a8ca1f37-1313-4016-8d8a-5250b3f57bdf (old id 4941639)
date added to LUP
2015-01-28 08:23:10
date last changed
2017-09-10 03:02:23
@article{a8ca1f37-1313-4016-8d8a-5250b3f57bdf,
  abstract     = {Reefs developed simultaneously during the latest Sandbian/earliest Katian global Guttenberg Isotopic Carbon Excursion (GICE) in several places across Baltoscandia. Latest Sandbian/earliest Katian patch reefs are also described from the Vasalemma Formation of northern Estonia. The Saku Member of the Vasalemma Formation was previously considered as a proximal facies related to the reefs. However, the Saku Member clearly post-dates the GICE interval and ranges from the latest Keila to Rakvere in terms of regional stages. Some small reefs occur in direct proximity to the stratotype of the Saku Member. New delta C-13 data from the stratotype section and the adjacent reefs indicate that these reefs developed before the deposition of the Saku Member during the GICE interval. The chemostratigraphic data support the hypothesis of a short-time Baltoscandian reef growth event that terminated during the GICE interval.},
  author       = {Kroger, Bjorn and Hints, Linda and Lehnert, Oliver and Mannik, Peep and Joachimski, Michael},
  issn         = {1736-7557},
  keyword      = {carbon isotopes,GICE excursion,Kope excursion,Ordovician reefs,Oandu,Stage,Estonia},
  language     = {eng},
  number       = {4},
  pages        = {271--276},
  publisher    = {Estonian Academy Publishers},
  series       = {Estonian Journal of Earth Sciences},
  title        = {The early Katian (Late Ordovician) reefs near Saku, northern Estonia and the age of the Saku Member, Vasalemma Formation},
  url          = {http://dx.doi.org/10.3176/earth.2014.30},
  volume       = {63},
  year         = {2014},
}