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A Late Weichselian stable isotope and molluscan stratigraphy from southern Sweden

Hammarlund, Dan LU and Keen, David H (1994) In GFF 116(4). p.235-248
Abstract
Late Weichselian and early Holocene partly carbonate-rich sediments from a small lacustrine deposit in Skane, southern Sweden, were analysed for stable carbon and oxygen isotopes and mollusc assemblages. The data from these analyses reveal a pronounced climatic warming at c. 12,400 BP, accompanied by a general change from continental to maritime conditions. Two significant climatic oscillations were identified, dated ate. 12,200-12,000 BP ande. 11,000-10,200 BP. The climatic cooling of the latter, corresponding to the Younger Dryas stadial, may have been initiated well before 11,000 BP. A climatic oscillation of minor amplitude may have occurred around 11,500 BP. Distinct variations in delta(13)C of bulk organic material and shell... (More)
Late Weichselian and early Holocene partly carbonate-rich sediments from a small lacustrine deposit in Skane, southern Sweden, were analysed for stable carbon and oxygen isotopes and mollusc assemblages. The data from these analyses reveal a pronounced climatic warming at c. 12,400 BP, accompanied by a general change from continental to maritime conditions. Two significant climatic oscillations were identified, dated ate. 12,200-12,000 BP ande. 11,000-10,200 BP. The climatic cooling of the latter, corresponding to the Younger Dryas stadial, may have been initiated well before 11,000 BP. A climatic oscillation of minor amplitude may have occurred around 11,500 BP. Distinct variations in delta(13)C of bulk organic material and shell carbonate are discussed in terms of climatically-induced changes in lake-water chemistry. The general assumption of a positive correlation between delta(18)O of limnic carbonates and mean annual air temperature is questioned. A climatic warming may be associated with a depletion of (18)O in limnic carbonates. Comparisons of palaeoclimatic information from the stable isotope data with that provided by molluscs allow the identification of aspects of climatic and environmental change such as water temperature, water depth, and aquatic vegetation density. Changes in the mollusc assemblage reflect changes in the limnic environment and facilitates the interpretation of stable isotope data. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
southern Sweden, lake sediments, mollusc assemblages, stable oxygen isotopes, Stable carbon isotopes, Late Weichselian
in
GFF
volume
116
issue
4
pages
235 - 248
publisher
Geological Society of Sweden
external identifiers
  • scopus:0028553215
ISSN
2000-0863
language
English
LU publication?
yes
id
43cb7648-c9a9-4933-9d8b-a98fa7b8e833 (old id 5053237)
date added to LUP
2015-02-24 10:04:48
date last changed
2017-01-01 05:14:27
@article{43cb7648-c9a9-4933-9d8b-a98fa7b8e833,
  abstract     = {Late Weichselian and early Holocene partly carbonate-rich sediments from a small lacustrine deposit in Skane, southern Sweden, were analysed for stable carbon and oxygen isotopes and mollusc assemblages. The data from these analyses reveal a pronounced climatic warming at c. 12,400 BP, accompanied by a general change from continental to maritime conditions. Two significant climatic oscillations were identified, dated ate. 12,200-12,000 BP ande. 11,000-10,200 BP. The climatic cooling of the latter, corresponding to the Younger Dryas stadial, may have been initiated well before 11,000 BP. A climatic oscillation of minor amplitude may have occurred around 11,500 BP. Distinct variations in delta(13)C of bulk organic material and shell carbonate are discussed in terms of climatically-induced changes in lake-water chemistry. The general assumption of a positive correlation between delta(18)O of limnic carbonates and mean annual air temperature is questioned. A climatic warming may be associated with a depletion of (18)O in limnic carbonates. Comparisons of palaeoclimatic information from the stable isotope data with that provided by molluscs allow the identification of aspects of climatic and environmental change such as water temperature, water depth, and aquatic vegetation density. Changes in the mollusc assemblage reflect changes in the limnic environment and facilitates the interpretation of stable isotope data.},
  author       = {Hammarlund, Dan and Keen, David H},
  issn         = {2000-0863},
  keyword      = {southern Sweden,lake sediments,mollusc assemblages,stable oxygen isotopes,Stable carbon isotopes,Late Weichselian},
  language     = {eng},
  number       = {4},
  pages        = {235--248},
  publisher    = {Geological Society of Sweden},
  series       = {GFF},
  title        = {A Late Weichselian stable isotope and molluscan stratigraphy from southern Sweden},
  volume       = {116},
  year         = {1994},
}