The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability Yu, Shiyong 2003 Link to publication Citation for published version (APA): Yu, S. (2003). The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability. Deaprtment of Geology. 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LUND UNIVERSITY PO Box 117 221 00 Lund +46 46-222 00 00 The Littorina transgression in L southeastern Sweden and its relation to mid-Holocene U climate variability N D Q Shi-Yong Yu U LUNDQUA Thesis 51 Quaternary Sciences A Department of Geology GeoBiosphere Science Centre Lund University T Lund 2003 H E S I S LUNDQUA Thesis 51 The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability Shi-Yong Yu Avhandling att med tillstånd från Naturvetenskapliga Fakulteten vid Lunds Universitet för avläggandet av filosofie doktorsexamen, offentligen försvaras i Geologiska institutionens föreläsningssal Pangea, Sölvegatan 12, Lund, fredagen den 14 november kl. 13.15. Lund 2003 Lund University, Department of Geology, Quaternary Sciences Coring the shallow sea bed of the Smygen Bay, SE Sweden. Photo courtesy of B. E. Berglund (2001). The Littorina transgression in southeastern Sweden and its relation to mid-Holocene climate variability By Shi-Yong Yu GeoBiosphere Science Centre, Department of Geology/Quaternary Sciences, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden This thesis is based on the work carried out while I Appendix III: Yu, S.-Y., Berglund, B.E., Andrén, was a Ph. D. student at the Department of Geol- E., and Sandgren, P.: Mid-Holocene Baltic Sea ogy, GeoBiosphere Science Centre, Lund Univer- transgression along the coast of Blekinge, SE Swe- sity, between September 1999 and November 2003. den — ancient lagoons correlated with beach ridges. The results of this work have been presented in six Manuscript submitted to GFF. separate papers listed below as appendices (I–VI) and are hereafter referred to by their Roman nu- Appendix IV: Yu, S.-Y. 2003: Centennial-scale merals. The papers have been submitted to peer- cycles in middle Holocene sea level along the south- reviewed international journals. Three of them will eastern Swedish Baltic coast. Geological Society appear soon and the other three are still under con- of America Bulletin 115 (in press). sideration. Appendix V: Yu, S.-Y., and Sandgren, P.: Mid-Ho- Appendix I: Yu, S.-Y., Andrén, E., Barnekow, L., locene changes in North Atlantic Oscillation pat- Berglund, B.E., and Sandgren, P. 2003: Holocene terns and Baltic nearshore hydrography at centen- palaeoecology and shoreline displacement on the nial time scales. Manuscript submitted to Journal Biskopsmåla Peninsula, southeastern Sweden. of Quaternary Science. Boreas 32 (in press). Appendix VI: Yu, S.-Y, Berglund, B.E., and Appendix II: Yu, S.-Y., Berglund, B.E., Sandgren, Sandgren, P.: Acceleration of Baltic sea-level rise P., and Fritz, S.C. 2004: Holocene palaeoecology suggests a global meltwater pulse 8000 years ago. and shoreline displacement along the Blekinge coast, Manuscript submitted to Science. SE Sweden and implications for climate and sea- level changes. The Holocene 14 (in press). Contents PREFACE ................................................................................................................................... 1 INTRODUCTION ...........................................................................................................2 LATE QUATERNARY HISTORY OF THE BALTIC SEA................................................... 3 STAGE 1 – BALTIC ICE LAKE....................................................................................................................... 3 STAGE 2 – YOLDIA SEA............................................................................................................................... 3 STAGE 3 – ANCYLUS LAKE ......................................................................................................................... 3 STAGE 4 – LITTORINA SEA.......................................................................................................................... 4 POSTGLACIAL SHORELINE DISPLACEMENT IN SOUTHEASTERN SWEDEN ......4 STUDY AREA............................................................................................................................. 4 SITE DESCRIPTIONS .............................................................................................................. 5 SMYGEN BAY .............................................................................................................................................. 5 HUNNEMARA ANCIENT LAKE...................................................................................................................... 5 LAKE RYSSJÖN............................................................................................................................................ 5 LAKE FÄRSKSJÖN........................................................................................................................................ 6 OTHER SITES DISCUSSED............................................................................................................................. 6 METHODS................................................................................................................................... 7 FIELDWORK ................................................................................................................................................ 7 CORE LOGGING AND MAGNETIC-SUSCEPTIBILITY SCANNING..................................................................... 8 CORE SPLICING AND SUBSAMPLING............................................................................................................ 8 ORGANIC CONTENT, ORGANIC CARBON AND MINERAL MAGNETISM ......................................................... 8 POLLEN AND DINOFLAGELLATES................................................................................................................ 8 DIATOMS..................................................................................................................................................... 8 MACROFOSSILS........................................................................................................................................... 9 RADIOCARBON DATING .............................................................................................................................. 9 RESULTS — SUMMARIES OF PAPERS............................................................................. 9 PAPER I ....................................................................................................................................................... 9 PAPER II .................................................................................................................................................... 10 PAPER III ................................................................................................................................................... 10 PAPER IV ................................................................................................................................................... 11 PAPER V .................................................................................................................................................... 12 PAPER VI ................................................................................................................................................... 12 DISCUSSION............................................................................................................................ 13 TIMING AND PATTERN OF THE LITTORINA TRANSGRESSION..................................................................... 13 IRREGULAR ISOSTASY OR VARIABLE ICE VOLUME? ................................................................................. 13 ATMOSPHERIC FORCING VERSUS TIDAL ACTIONS..................................................................................... 15 CONCLUSIONS....................................................................................................................... 15 ACKNOWLEDGEMENTS ...................................................................................................... 16 SVENSK SAMMANFATTNING............................................................................................. 17 REFERENCES ........................................................................................................................