DOCSLIB.ORG

In the Wake of Deglaciation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
In the Wake of Deglaciation In the wake of deglaciation - sedimentary signatures of ice-sheet decay and sea-level change Studies from south-central Sweden and the western Arctic Ocean Henrik Swärd Academic dissertation for the Degree of Doctor of Philosophy in Marine Geology at Stockholm University to be publicly defended on Friday 27 April 2018 at 13.00 in William-Olssonsalen, Geovetenskapens hus, Svante Arrhenius väg 14. Abstract Lacustrine and marine sedimentary archives help unravel details concerning the withdrawal of large ice sheets and resulting sea-level changes during the last deglaciation (22 -11 kyr). In a series of four manuscripts, this PhD thesis investigates the sedimentological signatures from deglacial processes at three key locations in the northern hemisphere: (i) Lake Vättern (LV) in south-central Sweden, (ii) Herald Canyon (HC) in the western Chukchi Sea, and (iii) Mackenzie Trough (MT) on the westernmost edge of the Canadian Beaufort Shelf. One lacustrine (LV) and two marine (HC and MT) sediment cores were analyzed using a broad range of methods to describe the physical, chemical, mineralogical and biological characteristics, and used to construct paleoenvironmental interpretations. Constituting the westernmost part of the Baltic Sea during parts of the last deglaciation, LV has long been envisaged as a key region for deglacial studies in southern Scandinavia. Sediments in LV highlight four major lake development stages following the withdrawal of the Fennoscandian Ice Sheet. These include the Baltic Ice Lake, the Yoldia Sea, the Ancylus Lake and the ultimate isolated lake stage. New radiocarbon dates indicate that the lake became isolated at 9530±50 cal. yr BP. A sharp transition from a varved clay unit to a partly sulfide laminated clay unit marks the final drainage of the Baltic Ice Lake, dated to 11 650±280 cal. yr BP. However, an earlier peak in pore water chlorinity identified in the sediment provides the most compelling evidence to date for an initial drainage of the Baltic Ice Lake (~12.8 cal. kyr BP) near the onset of the Younger Dryas cold event. Located downstream from where Pacific water flows into the Arctic, HC is a key location for understanding the details of the early Holocene (~11 cal. yr BP) flooding of the Bering Strait, and investigating sedimentological proxies for Pacific water in Arctic Ocean sediment cores. The deglacial transgression of the shelf and opening of the Bering Strait is reflected in the grain size and biogenic silica content from the HC sediment core. However, a clear Pacific water signature is not seen in the clay mineralogy which exhibits increased variability after the opening of the Bering Strait. This is interpreted as a combination of Pacific and East Siberian sources for bottom waters in HC. The absence of a clear Pacific water signature in the clay mineralogy highlights potential limitations to using this proxy in other records from the western Arctic. Far field studies from the Arctic Ocean have argued that Mackenzie River sediments in Younger Dryas age sediments can be recognized by a unique mineral and isotopic composition, but no detailed proximal study of Mackenzie River sediments exists to support this assertion. The mineral and isotopic (Sr and Nd) studies presented in this thesis from the third of the key regions, the MT, fills this gap. The results show that the mineral assemblage and ɛNd of fine fraction material remained relatively stable during the decay of the Laurentide Ice Sheet. An exception to this exists in a transitional sedimentary unit, deposited immediately after transgression at the site, and might be related to meltwater pulses associated with the drainage of the Lake Agassiz. The results suggest that the modern mineral and isotopic signature of Mackenzie River sediments may not be a suitable proxy for deglacial meltwater events in far field sedimentary records. Keywords: paleoenvironmental changes, last deglaciation, sedimentology, Lake Vättern, western Arctic Ocean, Mackenzie Trough, Herald Canyon. Stockholm 2018 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-153906 ISBN 978-91-7797-163-4 ISBN 978-91-7797-164-1 Department of Geological Sciences Stockholm University, 106 91 Stockholm.
Load more

Recommended publications
  • Varve-Related Publications in Alphabetical Order (Version 15 March 2015) Please Report Additional References, Updates, Errors Etc
    Varve-Related Publications in Alphabetical Order (version 15 March 2015) Please report additional references, updates, errors etc. to Arndt Schimmelmann ([email protected]) Abril JM, Brunskill GJ (2014) Evidence that excess 210Pb flux varies with sediment accumulation rate and implications for dating recent sediments. Journal of Paleolimnology 52, 121-137. http://dx.doi.org/10.1007/s10933-014-9782-6; statistical analysis of radiometric dating of 10 annually laminated sediment cores from aquatic systems, constant rate of supply (CRS) model. Abu-Jaber NS, Al-Bataina BA, Jawad Ali A (1997) Radiochemistry of sediments from the southern Dead Sea, Jordan. Environmental Geology 32 (4), 281-284. http://dx.doi.org/10.1007/s002540050218; Dimona, Jordan, gamma spectroscopy, lead-210, no anthropogenic contamination, calculated sedimentation rate agrees with varve record. Addison JA, Finney BP, Jaeger JM, Stoner JS, Norris RN, Hangsterfer A (2012) Examining Gulf of Alaska marine paleoclimate at seasonal to decadal timescales. In: (Besonen MR, ed.) Second Workshop of the PAGES Varves Working Group, Program and Abstracts, 17-19 March 2011, Corpus Christi, Texas, USA, 15-21. http://www.pages.unibe.ch/download/docs/working_groups/vwg/2011_2nd_VWG_workshop_programs_and_abstracts.pdf; ca. 60 cm marine sediment core from Deep Inlet in southeast Alaska, CT scan, XRF scanning, suspected varves, 1972 earthquake and tsunami caused turbidite with scouring and erosion. Addison JA, Finney BP, Jaeger JM, Stoner JS, Norris RD, Hangsterfer A (2013) Integrating satellite observations and modern climate measurements with the recent sedimentary record: An example from Southeast Alaska. Journal of Geophysical Research: Oceans 118 (7), 3444-3461. http://dx.doi.org/10.1002/jgrc.20243; Gulf of Alaska, paleoproductivity, scanning XRF, Pacific Decadal Oscillation PDO, fjord, 137Cs, 210Pb, geochronometry, three-dimensional computed tomography, discontinuous event-based marine varve chronology spans AD ∼1940–1981, Br/Cl ratios reflect changes in marine organic matter accumulation.
    [Show full text]
  • Paleoenvironmental Reconstructions in the Baltic Sea and Iberian Margin
    Paleoenvironmental reconstructions in the Baltic Sea and Iberian Margin Assessment of GDGTs and long-chain alkenones in Holocene sedimentary records Lisa Alexandra Warden Photography: Cover photos: Dietmar Rüß Inside photos: Dietmar Rüß, René Heistermann and Claudia Zell Printed by: Ridderprint, Ridderkerk Paleoenvironmental reconstructions in the Baltic Sea and Iberian Margin Assessment of GDGTs and long-chain alkenones in Holocene sedimentary records Het gebruik van GDGTs en alkenonen in Holocene sedimentaire archieven van de Baltische Zee en kustzeeën van het Iberisch schiereiland voor paleomilieureconstructie (met een samenvatting in het Nederlands) Proefschrift ter verkrijging van de graad van doctor aan de Universiteit Utrecht op gezag van de rector magnificus, prof. dr. G.J. van der Zwaan, ingevolge het besluit van het college voor promoties in het openbaar te verdedigen op vrijdag 31 maart 2017 des middags te 12.45 uur door Lisa Alexandra Warden geboren op 24 januari 1982 te Philadelphia, Verenigde Staten van Amerika Promotor: Prof. dr. ir. J.S. Sinninghe Damsté This work has been financially supported by the European Research Council (ERC) and the NIOZ Royal Netherlands Institute for Sea Research. “We are the first generation to feel the impact of climate change and the last generation that can do something about it.” -President Obama For Lauchlan, who was with me the whole time as I wrote this thesis. Photo by Dietmar Rüß Contents Chapter 1 – Introduction 9 Chapter 2 - Climate forced human demographic and cultural change in
    [Show full text]
  • The Problem of . the Cochrane in Late Pleistocene * Chronology
    The Problem of . the Cochrane in Late Pleistocene * Chronology ¥ GEOLOGICAL SURVEY BULLETIN 1021-J A CONTRIBUTION TO GENERAL GEOLOGY 4 - THE PROBLEM OF THE COCHRANE IN LATE PLEISTOCENE CHRONOLOGY By THOR N. V. KAKLSTROM .ABSTRACT The precise position of the Cochrane readvances in the Pleistocene continental chronology has long been uncertain. Four radiocarbon samples bearing on the age of the Cochrane events were recently dated by the U. S. Geological Survey. Two samples (W-241 and W-242), collected from organic beds underlying sur­ face drift in the Cochrane area, Ontario, are more than 38,000 years old. Two samples (W-136 and W-176), collected from forest beds near the base and middle of a 4- to 6-foot-thick peat section overlying glacial lake sediments deposited after ice had retreated north of Cochrane, have ages, consistent with stratigraphic position, of 6,380±350 and 5,800±300 years. These results indicate that the Cochrane area may have been under a continuous ice cover from before 36,000 until some time before 4500 B. C.; this conforms with the radiocarbon dates of the intervening substage events of the Wisconsin glaciation. The radiocarbon results indicate that the Cochrane preceded rather than followed the Altither- mal climatic period and suggest that the Cochrane be considered a Wisconsin event of substage rank. Presented geoclimatic data seemingly give a consistent record of a glaciation and eustatic sea level low between 7000 and 4500 B. C., which appears to corre­ late with the Cochrane as a post-Mankato and pre-Altithermal event. A direct relation between glacial and atmospheric humidity changes is revealed by com­ paring the glacioeustatic history of late Pleistocene and Recent time with inde­ pendently dated drier intervals recorded from Western United States, Canada, and Europe.
    [Show full text]
  • Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea
    Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea Kortekaas, Marloes 2007 Link to publication Citation for published version (APA): Kortekaas, M. (2007). Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea. Department of Geology, Lund University. Total number of authors: 1 General rights Unless other specific re-use rights are stated the following general rights apply: Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Read more about Creative commons licenses: https://creativecommons.org/licenses/ Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. LUND UNIVERSITY PO Box 117 221 00 Lund +46 46-222 00 00 Post-glacial history of sea-level and environmental change in the southern Baltic Sea Marloes Kortekaas Quaternary Sciences, Department of Geology, GeoBiosphere Science Centre, Lund University, Sölvegatan 12, SE-22362 Lund, Sweden This thesis is based on four papers listed below as Appendices I-IV.
    [Show full text]
  • Effet Réservoir Sur Les Âges 14C De La Mer De Champlain À La Transition Pléistocène-Holocène : Révision De La Chronologie De La Déglaciation Au Québec Méridional
    _57-2-3.qxd 31/08/05 16:17 Page 115 Géographie physique et Quaternaire, 2003, vol. 57, nos 2-3, p. 115-138, 6 fig., 4 tabl. EFFET RÉSERVOIR SUR LES ÂGES 14C DE LA MER DE CHAMPLAIN À LA TRANSITION PLÉISTOCÈNE-HOLOCÈNE : RÉVISION DE LA CHRONOLOGIE DE LA DÉGLACIATION AU QUÉBEC MÉRIDIONAL Serge OCCHIETTI* et Pierre J.H. RICHARD*, respectivement : Département de géographie et Centre GEOTOP-UQAM-McGILL, Université du Québec à Montréal, C.P.8888, succursale Centre-ville, Montréal, Québec H3C 3P8 et Département de géogra- phie, Université de Montréal, C.P.6128, succursale Centre-ville, Montréal, Québec H3C 3J7. RÉSUMÉ L’âge de macrorestes de plantes ABSTRACT Reservoir effect on 14C ages of RESUMEN Datación con radiocarbono del terricoles et une extrapolation fondée sur le Champlain Sea at the Pleistocene-Holocene efecto reservorio del Mar de Champlain pollen des sédiments sous-jacents à la date transition: revision of the chronology of ice durante la transición Pleistoceno-Holoceno: basale du lac postglaciaire de Hemlock Carr retreat in southern Québec. Basal AMS-dates revisión cronológica de la desglaciación en el (243 m), au mont Saint-Hilaire, montrent que on terrestrial plant macrofossils coupled with Québec meridional. La edad de los macrores- la déglaciation locale y est survenue vers an extrapolation from the pollen content of tos de plantas terrestres y una extrapolación 11 250 ans 14C BP (13,3-13,1 ka BP). La underlying postglacial lake sediments at the fundada sobre el polen de los sedimentos datation croisée entre de tels macrorestes Hemlock Carr peatland (243 m), on subyacentes al estrato basal del lago postgla- (10 510 ± 60 ans 14C BP) et des coquilles de Mont Saint-Hilaire, show that local ice retreat ciar de Hemlock Carr (243 m), en el Mont sédiments marins (~12 200 ans 14C BP) pié- occurred around 11 250 14C yr BP (13,3- Saint-Hilaire, muestran que la desglaciación gés au fond du lac Hertel (169 m), voisin, 13,1 ka BP).
    [Show full text]
  • (NSF) Directorate of Geosciences
    NSF Proposal accepted for funding March 22, 2007 Target Program: National Science Foundation (NSF) Directorate of Geosciences (GEO): Division of Earth Sciences (EAR): Sedimentary Geology and Paleobiology (SGP) Program – proposal submitted July 16, 2006 – proposal accepted for funding March 22, 2007 Title: Consolidation and Calibration of the New England Varve Chronology (NEVC): An Annual Continental Record of Ice Dynamics and Terrestrial Change, 18-11.5 kyr BP John C. Ridge 617-627-3494 or 617-627-2890 Dept. of Geology [email protected] Tufts University Medford, MA 02155 1 1. Project Summary Intellectual merit. Rapid climate change events during deglaciation are closely linked to ice sheet, ocean, and atmosphere interactions. Understanding these interactions requires high resolution comparisons of climate and continental ice dynamics. Although general patterns of Laurentide Ice Sheet (LIS) variation have been discerned, they are not continuously resolved at a sub-century scale. This lack of continuous, high-resolution terrestrial glacial chronologies with accurate radiometric controls continues to be a limiting factor in understanding deglacial climate. Such records, especially from the southeastern sector of the LIS, can provide critical comparisons to N. Atlantic climate records (marine and ice core) and a rigorous test of hypotheses linking glacial activity to climate change. Consolidation of the New England Varve Chronology (NEVC), and development of its records of glacier dynamics and terrestrial change, is a rare opportunity to formulate a complete, annual-scale terrestrial chronology from 18-11.5 kyr BP. Glacial varve deposition, which is linked to glacial meltwater discharge, can be used to monitor ice sheet ablation and has a direct tie to glacier mass balance and climate.
    [Show full text]
  • Land Uplift and Relative Sea-Level Changes in the Loviisa Area, Southeastern Finland, During the Last 8000 Years
    F10000009 POSIVA 99-28 Land uplift and relative sea-level changes in the Loviisa area, southeastern Finland, during the last 8000 years Arto Miettinen Matti Eronen Hannu Hyvarinen Department of Geology University of Helsinki September 1999 POSIVA OY Mikonkatu 15 A. FIN-001O0 HELSINKI, FINLAND Phone (09) 2280 30 (nat.). ( + 358-9-) 2280 30 (int.) Fax (09) 2280 3719 (nat.), ( + 358-9-) 2280 3719 (int.) POSIVA 99-28 Land uplift and relative sea-level changes in the Loviisa area, southeastern Finland, during the last 8000 years Arto Miettinen Matti Eronen Hannu Hyvarinen September 1999 POSIVA OY Mikonkatu 15 A, FIN-OO1OO HELSINKI, FINLAND Phone (09) 2280 30 (nat.), ( + 358-9-) 2280 30 (int.) 3 1/23 Fax (09) 2280 3719 (nat.), ( + 358-9-) 2280 3719 (int.) Posiva-raportti - Posiva Report Raporfintumus-Report <»*> POSIVA 99-28 Posiva Oy . Mikonkatu 15 A, FIN-00100 HELSINKI, FINLAND JuikaisuaiKa Date Puh. (09) 2280 30 - Int. Tel. +358 9 2280 30 September 1999 Tekija(t) - Author(s) Toimeksiantaja(t) - Commissioned by Arto Miettinen MattiEronen Posiva Oy Hannu Hyvannen y Department of Geology, University of Helsinki Nimeke - Title LAND UPLIFT AND RELATIVE SEA-LEVEL CHANGES IN THE LOVIISA AREA, SOUTHEASTERN FINLAND, DURING THE LAST 8000 YEARS Tiivistelma - Abstract Southeastern Finland belongs to the area covered by the Weichselian ice sheet, where the release of the ice load caused a rapid isostatic rebound during the postglacial time. While the mean overall apparent uplift is of the order of 2 mm/yr today, in the early Holocene time it was several times higher. A marked decrease in the rebound rate occurred around 8500 BP, however, since then the uplift rate has remained high until today, with a slightly decreasing trend towards the present time.
    [Show full text]
  • Late Weichselian and Holocene Shore Displacement History of the Baltic Sea in Finland
    Late Weichselian and Holocene shore displacement history of the Baltic Sea in Finland MATTI TIKKANEN AND JUHA OKSANEN Tikkanen, Matti & Juha Oksanen (2002). Late Weichselian and Holocene shore displacement history of the Baltic Sea in Finland. Fennia 180: 1–2, pp. 9–20. Helsinki. ISSN 0015-0010. About 62 percent of Finland’s current surface area has been covered by the waters of the Baltic basin at some stage. The highest shorelines are located at a present altitude of about 220 metres above sea level in the north and 100 metres above sea level in the south-east. The nature of the Baltic Sea has alter- nated in the course of its four main postglacial stages between a freshwater lake and a brackish water basin connected to the outside ocean by narrow straits. This article provides a general overview of the principal stages in the history of the Baltic Sea and examines the regional influence of the associated shore displacement phenomena within Finland. The maps depicting the vari- ous stages have been generated digitally by GIS techniques. Following deglaciation, the freshwater Baltic Ice Lake (12,600–10,300 BP) built up against the ice margin to reach a level 25 metres above that of the ocean, with an outflow through the straits of Öresund. At this stage the only substantial land areas in Finland were in the east and south-east. Around 10,300 BP this ice lake discharged through a number of channels that opened up in central Sweden until it reached the ocean level, marking the beginning of the mildly saline Yoldia Sea stage (10,300–9500 BP).
    [Show full text]
  • When the River Began—The Formation of River Motala Ström and Human Presence in the Early Holocene, Sweden
    quaternary Article When the River Began—The Formation of River Motala Ström and Human Presence in the Early Holocene, Sweden Jonas Bergman 1,* , Anna Plikk 1 , Jens Heimdahl 1, Linus Hagberg 1, Fredrik Hallgren 2, Jan Risberg 3 and Fredrik Molin 1 1 The Archaeologists, National Historical Museums, 126 53 Hägersten, Sweden; [email protected] (A.P.); [email protected] (J.H.); [email protected] (L.H.); [email protected] (F.M.) 2 The Cultural Heritage Foundation, 722 12 Västerås, Sweden; [email protected] 3 Department of Physical Geography, Stockholm University, 106 91 Stockholm, Sweden; [email protected] * Correspondence: [email protected] Received: 3 July 2020; Accepted: 21 August 2020; Published: 29 August 2020 Abstract: In conjunction with the extensive archaeological projects conducted at the current outlet of Sweden’s second largest lake, Lake Vättern, macrofossil, pollen and diatom records have been studied from 14C-dated lake and river sediments from River Motala Ström in Motala and Lake Boren. These investigations have revealed sedimentary evidence of the Yoldia Sea regression, the Ancient Lake Vättern transgression, and the following stepwise river formation process. Around 9000 cal BC, two small kettlehole basins at Strandvägen and Kanaljorden became isolated from the Baltic basin. As the ice sheet retreated further north, the isostatic uplift isolated the Vättern basin from the Baltic basin. Due to the uneven isostatic uplift, the basin tilted toward the south, and the Ancient Lake Vättern transgression started in Motala. The threshold in Motala at 92.5 m a.s.l. was reached around 7200 cal BC, and River Motala Ström was formed.
    [Show full text]
  • Volume 32 No.2 December 2014
    A periodical devoted to Luminescence and ESR dating Department of Geography and Earth Sciences, Aberystwyth University, Ceredigion SY23 3DB, United Kingdom and Department of Physics, East Carolina University 1000 East 5th Street, Greenville, NC 27858, USA Volume 32 No.2 December 2014 A simple Bayesian method for assessing the standard error of equivalent dose estimates J. Peng, Z. B. Dong ___________________________________ 17 What to do when carbonate replaced water: Carb, the model for estimating the dose rate of carbonate-rich samples B. Mauz, D. Hoffmann ________________________________ 24 Thesis abstracts ______________________________________ 33 Bibliography _________________________________________42 Announcements XIX INQUA, Nagoya _______________ __________________ 53 ISSN 0735-1348 Ancient TL Started by the late David Zimmerman in 1977 EDITOR G.A.T. Duller, Department of Geography and Earth Sciences, Aberystwyth University, Ceredigion SY23 3DB, United Kingdom ([email protected]) and R.DeWitt, Department of Physics, East Carolina University, Howell Science Complex, 1000 E. 5th Street Greenville, NC 27858, USA ([email protected]) EDITORIAL BOARD I.K. Bailiff, Luminescence Dosimetry Laboratory, Dawson Building, University of Durham, South Road, Durham DH1 3LE, United Kingdom ([email protected]) S.H. Li, Department of Earth Sciences, The University of Hong Kong, Hong Kong, China ([email protected]) R.G. Roberts, School of Geosciences, University of Wollongong, Wollongong, NSW 2522, Australia ([email protected]) REVIEWERS PANEL R.M. Bailey, Oxford University Centre for the Environment, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom ([email protected]) J. Faïn, Laboratoire de Physique Corpusculaire, 63177 Aubière Cedex, France ([email protected]) R.
    [Show full text]
  • The Late Quaternary Development of the Baltic Sea
    The late Quaternary development of the Baltic Sea Svante Björck, GeoBiosphere Science Centre, Department of Geology, Quaternary Sciences, Lund University, Sölveg. 12, SE-223 62 Lund, Sweden INTRODUCTION Since the last deglaciation of the Baltic basin, which began 15 000-17 000 cal yr BP (calibrated years Before Present) and ended 11 000-10 000 cal yr BP, the Baltic has undergone many very different phases. The nature of these phases were determined by a set of forcing factors: a gradually melting Scandinavian Ice Sheet ending up into an interglacial environment, the highly differential glacio-isostatic uplift within the basin (from 9 mm/yr to -1mm/yr; Ekman 1996), changing geographic position of the controlling sills (Fig. 1), varying depths and widths of the thresholds between the sea and the Baltic basin, and climate change. These factors have caused large variations in salinity and water exchange with the outer ocean, rapid to gradual paleographic alterations with considerable changes of the north-south depth profile with time. For example, the area north of southern Finland-Stockholm has never experienced transgressions, or land submergence, while the developmen south of that latitude has been very complex. The different controlling factors are also responsible for highly variable sedimentation rates, both in time and space, and variations of the aquatic productivity as well as faunal and floral changes. The basic ideas in this article follow the lengthy, but less up-dated version of the Baltic Sea history (Björck, 1995), a more complete reference list and, e.g., the calendar year chronology of the different Baltic phases can be found on: http://www.geol.lu.se/personal/seb/Maps%20of%20the%20Baltic.htm.
    [Show full text]
  • In the Wake of Deglaciation - Sedimentary Signatures of Ice-Sheet Decay and Sea-Level Change
    ! "# "$%&%'($$) * * +%,( - ."" %% /( 0 * 1 ./-2+ .-2/ *./3 4 .34/ 4*./5 6 .6/ 47 ( .-2/ .34 6/ 5 * * * ( 4 7 *-2 ( -2 8 ! 0(6 70-*9 * - (: ;<'$=<$( 7( 7 0-* %%><$="&$( 7(3 * 70-.?%"(&( 7/ 9 ( - *34 3 .?%%( 7/ 7 * @ (6 7 5 34 (3 * @ 7 (6 A 34(6 @ ( ! 5B 9 5 C * @ 5B @ (6 . :/ *6* (6 D: - 0(@ @ * * - 5(6 5B @ ( !" "$%& 1EE ( ( E F G 1 1 1 1%<';$> 07:;#&;%##;#%>', 07:;#&;%##;#%>,% ! *%$>;% IN THE WAKE OF DEGLACIATION - SEDIMENTARY SIGNATURES OF ICE-SHEET DECAY AND SEA-LEVEL CHANGE Henrik Swärd In the wake of deglaciation - sedimentary signatures of ice-sheet decay and sea-level change Studies from south-central Sweden and the western Arctic Ocean Henrik Swärd ©Henrik Swärd, Stockholm University 2018 ISBN print 978-91-7797-163-4 ISBN PDF 978-91-7797-164-1 Cover: Sólheimajökull, Iceland. Photo: Henrik Swärd Printed in Sweden by Universitetsservice US-AB, Stockholm 2018 Distributor: Department of Geological Sciences, Stockholm University S.D.G. Abstract Lacustrine and marine sedimentary archives help
    [Show full text]