A high-resolution paleointensity stack of the past 14 to 68 ka from Black Sea sediments

Nowaczyk, Norbert R; Frank, Ute; Kind, Jessica; Arz, Helge Wolfgang

doi:10.1016/j.epsl.2013.09.028

Cited by 54 publications

(73 citation statements)

References 136 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A combination of empirical modeling of excursions and analysis of long time-series geodynamo simulations is the most suitable approach for characterizing the range of possible excursion behavior and the underlying processes that may drive their initiation, especially with production of new high-resolution sediment records (e.g., Nowaczyk et al, 2012Nowaczyk et al, , 2013Channell, 2014) revealing almost fully reversed polarity directions during excursions. Nevertheless, our models suggest two observations that should be considered in palaeomagnetic studies of excursions, if axial dipole changes are the dominant driver of surface field morphology.…”

Section: Discussionmentioning

confidence: 99%

“…Despite this progress, the surface field morphology and the physical origin of excursions remain unclear. Although significant advances have been made in determining the age, duration and global character of excursions from volcanic rocks (e.g., Jicha et al, 2011;Laj et al, 2014;Singer, 2014) and sediments (e.g., Laj et al, 2006;Channell et al, 2012;Channell, 2014;Nowaczyk et al, 2012Nowaczyk et al, , 2013, sparse spatial coverage, age uncertainties, and the fidelity of palaeomagnetic records hinder our understanding of the global behavior of excursions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A simple model for geomagnetic field excursions and inferences for palaeomagnetic observations

Brown

Korte

2016

Physics of the Earth and Planetary Interiors

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A simple model for geomagnetic field excursions and inferences for palaeomagnetic observations

Brown

Korte

2016

Physics of the Earth and Planetary Interiors

View full text Add to dashboard Cite

“…The NRM/ARM and NRM/IRM entries accommodate values calculated with a variety of methods: NRM/ARM or NRM/IRM at a specific AF step (Levi and Banerjee 1976), a mean of multiple NRM/ARM or NRM/IRM values at a range of AF steps (Channell et al 1997), a linear fit through NRM and ARM or IRM values at different AF steps (e.g., Channell et al 2012;Nowaczyk et al 2013), vector-subtracted NRM/ARM or NRM/IRM , and the pseudo-Thellier method (Tauxe et al 1995). The NRM, k, ARM, and IRM values used in the calculation of RPI are also reported (e.g., NRM rpi ) along with an indication of an author's preferred normalization method (RPI pref ), if noted.…”

Section: Relative Paleointensitymentioning

confidence: 99%

“…At least two geomagnetic field excursions (Mono Lake/Auckland and Laschamp) have been recorded at a number of globally distributed locations between 10 and 50 ka (e.g., Laj and Channell 2007;Laj et al 2014;Nowaczyk et al 2012Nowaczyk et al , 2013Singer 2014). Studies on high sedimentation rate cores across the Laschamp excursion (e.g., Nowaczyk et al 2012) have revealed an ever more detailed picture of surface field changes.…”

Section: Introductionmentioning

confidence: 99%

GEOMAGIA50.v3: 2. A new paleomagnetic database for lake and marine sediments

et al. 2015

View full text Add to dashboard Cite

Background: GEOMAGIA50.v3 for sediments is a comprehensive online database providing access to published paleomagnetic, rock magnetic, and chronological data obtained from lake and marine sediments deposited over the past 50 ka. Its objective is to catalogue data that will improve our understanding of changes in the geomagnetic field, physical environments, and climate. Findings: GEOMAGIA50.v3 for sediments builds upon the structure of the pre-existing GEOMAGIA50 database for magnetic data from archeological and volcanic materials. A strong emphasis has been placed on the storage of geochronological data, and it is the first magnetic archive that includes comprehensive radiocarbon age data from sediments. The database will be updated as new sediment data become available. Conclusions:The web-based interface for the sediment database is located at http://geomagia.gfz-potsdam.de/ geomagiav3/SDquery.php. This paper is a companion to Brown et al. (Earth Planets Space doi:10.1186/s40623-015-0232-0, 2015 and describes the data types, structure, and functionality of the sediment database.

show abstract

“…Approximate ages from the tuned Nowaczyk et al . () age model are listed alongside unknown tephras. BSC, Black Sea Core; CAR, Calc‐alkaline rhyolite; CAVP, Central Anatolian Volcanic Province; INT, interpolated from age model; LE, Laschamp excursion; PR, Peralkaline rhyolite; PT, Peralkaline trachyte.…”

Section: Methodsmentioning

confidence: 99%

The detailed tephrostratigraphy of a core from the south‐east Black Sea spanning the last ∼60 ka

Cullen

Smith

Arz

2014

J Quaternary Science

View full text Add to dashboard Cite

One visible volcanic ash layer and 21 non‐visible, cryptotephra horizons have been identified in the M72/5‐25‐GC1 core from the south‐east Black Sea that spans the last ∼60 ka. Glass chemistry suggests that the tephras derive from Italian, Hellenic and Turkish sources. The visible tephra layer is trachytic in composition and has been correlated to the ∼39 ka Campanian Ignimbrite super‐eruption from Campi Flegrei caldera, Italy. Two cryptotephra layers are associated with eruptions from Acigöl volcano (Turkey) around the Last Glacial Maximum, another is linked to activity at Erciyes Dagi in the Early Holocene (Perikartini or Karagüllü), and a cryptotephra layer near the top of the core correlates to the ∼3.6k cal a BP Minoan (marine Z2) tephra from Santorini (Thera), Greece. This extends the known dispersal area for all these volcanic ash units. Many other calc‐alkaline rhyolite layers preserved in the core are likely to be from central Anatolian sources but the lack of detailed proximal data for many of the volcanoes in the region prohibits further correlations. The tephrostratigraphy and glass compositional data presented here allow the tephra layers to be used to correlate sedimentary archives across the region, and help to extend the Mediterranean tephrochronology framework towards the east.

show abstract

A high-resolution paleointensity stack of the past 14 to 68 ka from Black Sea sediments

Cited by 54 publications

References 136 publications

A simple model for geomagnetic field excursions and inferences for palaeomagnetic observations

A simple model for geomagnetic field excursions and inferences for palaeomagnetic observations

GEOMAGIA50.v3: 2. A new paleomagnetic database for lake and marine sediments

The detailed tephrostratigraphy of a core from the south‐east Black Sea spanning the last ∼60 ka

Contact Info

Product

Resources

About