The Holocene shore displacement of Gästrikland, eastern Sweden: a contribution to the knowledge of Scandinavian glacio‐isostatic uplift

Berglund, Mikael

doi:10.1002/jqs.928

Cited by 21 publications

(26 citation statements)

References 24 publications

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“…Also, uplift is greatly influenced by the fluctuations of the sea level, and there has been a great deal of confusion of ideas and opinions about the transgressions. Besides, it is unknown to which extent the land uplift has slowed down since the last glaciation (Berglund 2005;Clague 1983;Eronen 1974: pp. 80-95;Lindén et al 2006;Petersson 2006: pp.…”

Section: Shore Displacement and Shoreline Determinationmentioning

confidence: 99%

Some Critical and Methodological Aspects of Shoreline Determination: Examples from the Baltic Sea Region

Ilves

Darmark

2010

J Archaeol Method Theory

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Coastal shorelines worldwide are generally unstable and changing. The study of the precise relation between any archaeological site and the shoreline at the time when the site was used is therefore complicated, but still often not met with appropriate methodological approaches. In this article, we test models based on phosphate analysis and discuss how they can be used to detect ancient shorelines. We propose that a model of increased and oscillating phosphate values at the former water level is considered reliable and useful in areas with advancing shoreline.

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Section: Shore Displacement and Shoreline Determinationmentioning

confidence: 99%

Some Critical and Methodological Aspects of Shoreline Determination: Examples from the Baltic Sea Region

Ilves

Darmark

2010

J Archaeol Method Theory

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“…The broad central band shows the development considered most likely, which is used in calculations in the paper; the outer narrow bands show estimated error margins. 14 C dates from four sites are given, indicating the single (filled diamonds, lowered bars) and double (vertical dashes) standard errors of the dates (Table and Berglund ). The inset diagram shows the general RSL development in Gästrikland during the Holocene (Berglund ).…”

Section: Methodsmentioning

confidence: 99%

“…The threshold consists of peat‐covered till NW of the lake, located by a field survey. Asklund & Sandegren () reported the altitude to be 169 m a.s.l., a figure also employed by Berglund (). A new measurement with GPS 2009, however, gives an altitude of 163.6 m a.s.l.…”

Section: Site Descriptionsmentioning

confidence: 99%

“…B). For two of these sites, Axen and Tingtjärn, 14 C dates and sediment properties have been presented previously by Berglund (). The events discussed in this study occurred mainly during the Ancylus Lake stage, when the Baltic was dammed above sea level, possibly 10–15 m, as a result of isostatic uplift of the outlet areas in western Sweden and the low sea level (Björck ).…”

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confidence: 99%

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Early Holocene in Gästrikland, east central Sweden: shore displacement and isostatic recovery

Berglund

2011

Boreas

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In Gästrikland in central Sweden, deglaciation took place c. 11 000 cal. a BP. In the present study the shore displacement during the earliest ice‐free period is investigated by the 14C dating of sediment from isolated lake basins. The shore displacement in Gästrikland includes an initial phase (∼500 years) of rapid regression, followed by a slowing of the relative sea level (RSL) fall to a rate similar to that of the remaining Holocene c. 9250 cal. a BP. The Ancylus Lake stage of the Baltic Sea belongs to the analysed interval. The RSL curve and glacial unloading history are used to separate and quantify elements of isostatic uplift. The postglacial uplift is ∼260 m, of which ∼45 m forms a rapid initial rise, which can be treated as qualitatively separate from the later, slower rise. There is considerable glacial unloading just prior to the deglaciation, but calculations suggest that only a small part of this relates directly to the rapid early Holocene rebound: most unloading is transferred either to uplift immediately prior to the deglaciation or to subsequent Holocene or future uplift. The isostatic rise in Gästrikland occurring between the end of the Younger Dryas stadial and the deglaciation, c. 11 500–11 000 cal. a BP, is estimated to be 100–110 m. Observations and estimations are incompatible with a Weichselian maximum ice thickness much smaller that 3000 m. The lack of glacial unloading during the Younger Dryas has a measurable impact on the Holocene isostatic rebound in Gästrikland, reducing it by an estimated 20–25 m.

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“…145 m (Fig. 1; Berglund 2005), giving a gradient to northern Hälsingland of around 0.45 m km −1 . The HS rises also from the Lake Vänern area northwards, in the direction of deglaciation.…”

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The highest postglacial shore levels and glacio‐isostatic uplift pattern in northern sweden

Berglund

2012

Geografiska Annaler: Series A, Physical Geography

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The detailed clay varve chronology and an extensive knowledge of the highest postglacial shore level elevation (HS) in northern Sweden, along the Bothnian western coast, provides opportunities for determining the pattern of isostatic rise and centre of uplift from the early Holocene. The shore level of c. 10 100 cal yr bp (10 ka) for this area is determined by subtracting, from the metachronous HS elevations, the fall in relative sea level between local deglaciation time and the chosen reference time. The area of highest uplift since 10 ka is situated somewhat north of the location with the world‐record HS (Skuleberget in Ångermanland), but south of the area with most rapid current rise. Wave erosion marks in the studied area are seen to be more consistent indicators of HS than glaciofluvial delta levels. The gradients of shore marks at 10 ka are generally small within the investigation area. The regional 10 ka shore level pattern shows considerable irregularity compared to the current uplift. Central Sweden and western Finland show 10 ka gradients that indicate isostatic response to late (13–10 ka bp) glacial unloading. Indications of a secondary uplift centre west of the present investigation area are reported in previous work; this also suggests rapid isostatic response to unloading. Finally, the possibility of identifying errors in the varve‐dated deglaciation chronology via the 10 ka shore level pattern is illustrated.

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The Holocene shore displacement of Gästrikland, eastern Sweden: a contribution to the knowledge of Scandinavian glacio‐isostatic uplift

Cited by 21 publications

References 24 publications

Some Critical and Methodological Aspects of Shoreline Determination: Examples from the Baltic Sea Region

Some Critical and Methodological Aspects of Shoreline Determination: Examples from the Baltic Sea Region

Early Holocene in Gästrikland, east central Sweden: shore displacement and isostatic recovery

The highest postglacial shore levels and glacio‐isostatic uplift pattern in northern sweden

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