Image analysis of rhythmites in proximal varves in Blekinge, southeastern Sweden

Lindeberg, Greger; Ringberg, Bertil

doi:10.1080/11035899901213182

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…laminae thickness) of the varves substantially changed, and re-calibration by manual counting was performed. The methodology for making greyscale analysis is more thoroughly described by Lindeberg & Ringberg (1999) and Lindeberg (2002). Sediment accumulation rates were calculated, from the greyscale analyses, based on the interpretation that each pair of laminae represents one year of sedimentation.…”

Section: Methodsmentioning

confidence: 99%

The isolation age and history of Lake Sågsjön, Stockholm, based on different dating techniques

Sohlenius¹,

Lindeberg

Björck

et al. 2003

GFF

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Laminated sediments from Lake Sågsjön, situated east of Stockholm, were used to study the last 1000 years history of the lake. A combination of 14 C dated (AMS) terrestrial macrofossils and annually laminated sediments were used, together with diatom stratigraphy, to determine the age of the isolation from the Baltic Sea. The laminae were counted using greyscale analysis and studied in detail by thin sections. Three new pair of laminae were formed between 1993 and 1996, indicating that the laminae are annually formed as varves. This is further supported by studies of thin sections, which reveal organic and minerogenic layers reflecting summer algae bloom and spring flood, respectively. Two of the 14 C dated macrofossils are interpreted as redeposited wheras the calibrated ages received from two leaf fragments are believed to represent the age of sediment deposition. According to the varve counting, Lake Sågsjön (2.0 m a.s.l.) was isolated from the Baltic Sea between AD 1500 and 1600. The two radiocarbon dated leafs give an isolation age between AD 1150 and 1400. Compared to the 14 C dates, the laminae based chronology yields too young ages, which indicates that the deposition of the laminae was not continuous. Shortly after the isolation the rate of sediment accumulation increases, which most probably is an effect of increased erosion when the catchment area was partly brought under cultivation.

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Section: Methodsmentioning

confidence: 99%

The isolation age and history of Lake Sågsjön, Stockholm, based on different dating techniques

Sohlenius¹,

Lindeberg

Björck

et al. 2003

GFF

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“…Color data may provide valuable information on sediment composition and carbonate content (e.g., Balsam et al, 1999;Millwood et al, 2002), geochemical composition (e.g., Barranco et al, 1989;Nederbragt et al, 2006;Löwemark et al, 2012), distribution of laminated diatom ooze (Bodén and Backman, 1996), grain abundance (e.g., Bond et al, 1992), and mineralogy content (e.g., Giosan et al, 2002). Color variation has moreover been related to high resolution climate studies (e.g., Bond et al, 1992;Grousset et al, 1993;Ortiz and Rack, 1999;Helmke et al, 2002;Löwemark et al, 2008), sometimes through the analysis of components of varved deposits (e.g., Lindeberg and Ringberg, 1999;Petterson et al, 1999;Saarinen and Petterson, 2001); or it may serve to develop chronostratigraphic models (Jakobsson et al, 2000;Rogerson et al, 2006). Even so, scarce studies look into color to assess grain size information (Zhao et al, 2011), one of the main features considered in the characterization/ differentiation of contourites, turbidites and associated deposits, as those registered in IODP Expedition 339.…”

Section: Characterization Of Contourites Turbidites and Associated Dmentioning

confidence: 99%

High resolution digital image treatment to color analysis on cores from IODP Expedition 339: Approaching lithologic features and bioturbational influence

Dorador

Rodrı́guez-Tovar

2016

Marine Geology

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“…During the later years of the twentieth century, there have been important technical and methodological developments in both dating methods. Advances in coring technology and in the digital imaging of sedimentary sequences have led to the creation of high-resolution time-stratigraphic frameworks for environmental reconstructions based on varved sediment records (Lindeberg & Ringberg 1999). Comparable technical advances have also aided the counting and cross matching of tree rings, and a number of continuous dendrochronological series have now been constructed (Fig.…”

Section: Annually Banded Recordsmentioning

confidence: 99%

Quaternary science 2007: a 50-year retrospective

Walker

Lowe

2007

JGS

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This paper reviews 50 years of progress in understanding the recent history of the Earth as contained within the stratigraphical record of the Quaternary. It describes some of the major technological and methodological advances that have occurred in Quaternary geochronology; examines the impressive range of palaeoenvironmental evidence that has been assembled from terrestrial, marine and cryospheric archives; assesses the progress that has been made towards an understanding of Quaternary climatic variability; discusses the development of numerical modelling as a basis for explaining and predicting climatic and environmental change; and outlines the present status of the Quaternary in relation to the geological time scale. The review concludes with a consideration of the global Quaternary community and the challenge for the future.

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Image analysis of rhythmites in proximal varves in Blekinge, southeastern Sweden

Cited by 5 publications

References 17 publications

The isolation age and history of Lake Sågsjön, Stockholm, based on different dating techniques

The isolation age and history of Lake Sågsjön, Stockholm, based on different dating techniques

High resolution digital image treatment to color analysis on cores from IODP Expedition 339: Approaching lithologic features and bioturbational influence

Quaternary science 2007: a 50-year retrospective

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