An estimate of post-depositional remanent magnetization lock-in depth in organic rich varved lake sediments

Snowball, Ian; Mellström, Anette; Ahlstrand, Emelie; Haltia, Eeva; Nilsson, Andréas; Ning, Wenxin; Muscheler, Raimund; Brauer, Achim

doi:10.1016/j.gloplacha.2013.10.005

Cited by 22 publications

(23 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most other studies of pDRM acquisition have been focussed on deep-sea depositional environments, but our results and a previous study by Snowball et al (2013) shows that the same processes could potentially be important for freshwater environments as well, even in the absence of a mixed bioturbated zone (evidenced by the intact varve structure that extends to the surface sediments). Previous evidence for pDRM lock-in delays and smoothing of the recorded geomagnetic signal (e.g.…”

Section: Discussionsupporting

confidence: 54%

“…The additional cores KP5-6 were treated similarly. The sampling strategy and measurements for the Gyltigesjön cores (GD0a, GP1-2 and GP4) were described by Snowball et al (2013).…”

Section: Palaeomagnetic Sampling and Measurementsmentioning

confidence: 99%

“…Based on pilot sample data (Stanton et al, 2011), the samples from KP5-6 were demagnetized at 10 mT AF steps up to 60 mT. For all samples, the inclination and declination was determined using principal component analysis (Kirschvink, 1980) between demagnetization 30 and 60 mT, which was sufficient to isolate the characteristic remanent magnetization (ChRM) (Stanton et al, 2011;Snowball et al, 2013).…”

Section: Palaeomagnetic Sampling and Measurementsmentioning

confidence: 99%

“…2, the analyses were also performed using a simple, but rather unrealistic, 'instant' lock-in function, which assumes that the pDRM is acquired instantaneously at a specific depth (e.g. Snowball et al, 2013). The results from these analyses for Kälksjön showed significant modeldata fits only when using SCHA.DIF.3K as an input model, with a minimum lock-in depth of 8 cm.…”

Section: Lock-in Modellingmentioning

confidence: 99%

“…Roberts and Winklhofer, 2004;Suganuma et al, 2011). Snowball et al (2013) made a minimum estimation of the pDRM lock-in depth in relatively organic-rich, non-bioturbated, varved sediments of Gyltigesjön in southern Sweden. Palaeomagnetic data from Gyltigesjön were compared to the reference curves for Fennoscandia (FENNOSTACK and FENNORPIS;Snowball et al, 2007) and the best fits to the reference data were obtained with lock-in depths of 21-34 cm.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Post-depositional remanent magnetization lock-in depth in precisely dated varved sediments assessed by archaeomagnetic field models

Mellström

Nilsson

Stanton

et al. 2015

Earth and Planetary Science Letters

Self Cite

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 54%

“…The additional cores KP5-6 were treated similarly. The sampling strategy and measurements for the Gyltigesjön cores (GD0a, GP1-2 and GP4) were described by Snowball et al (2013).…”

Section: Palaeomagnetic Sampling and Measurementsmentioning

confidence: 99%

Section: Palaeomagnetic Sampling and Measurementsmentioning

confidence: 99%

Section: Lock-in Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Post-depositional remanent magnetization lock-in depth in precisely dated varved sediments assessed by archaeomagnetic field models

Mellström

Nilsson

Stanton

et al. 2015

Earth and Planetary Science Letters

Self Cite

View full text Add to dashboard Cite

High‐resolution chronology of sediment below CCD based on Holocene paleomagnetic secular variations in the Tohoku‐oki earthquake rupture zone

Kanamatsu

Usami

McHugh

et al. 2017

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Using high‐resolution paleomagnetic data, we examined the potential for obtaining precise ages from sediment core samples recovered from deep‐sea basins close to rupture zones of the 2011 and earlier earthquakes off Tohoku, Japan. Obtaining detailed stratigraphic ages from deep‐sea sediments below the calcium compensation depth (CCD) is difficult, but we found that the samples contain excellent paleomagnetic secular variation records to constrain age models. Variations in paleomagnetic directions obtained from the sediments reveal systematic changes in the cores. A stacked paleomagnetic profile closely matches the Lake Biwa data sets in southwest Japan for the past 7000 years, one can establish age models based on secular variations of the geomagnetic field on sediments recovered uniquely below the CCD. Comparison of paleomagnetic directions near a tephra and a paleomagnetic direction of contemporaneous pyroclastic flow deposits acquired by different magnetization processes shows precise depositional ages reflecting the magnetization delay of the marine sediment record.

show abstract

Radiocarbon Dating in Estuarine Environments

Olsen

Ascough

Lougheed

et al. 2017

Applications of Paleoenvironmental Techniques in Estuarine Studies

View full text Add to dashboard Cite

An estimate of post-depositional remanent magnetization lock-in depth in organic rich varved lake sediments

Cited by 22 publications

References 47 publications

Post-depositional remanent magnetization lock-in depth in precisely dated varved sediments assessed by archaeomagnetic field models

Post-depositional remanent magnetization lock-in depth in precisely dated varved sediments assessed by archaeomagnetic field models

High‐resolution chronology of sediment below CCD based on Holocene paleomagnetic secular variations in the Tohoku‐oki earthquake rupture zone

Radiocarbon Dating in Estuarine Environments

Contact Info

Product

Resources

About