Multiple Brunhes Chron excursions recorded in the West Eifel (Germany) volcanics: Support for long-held mantle control over the non-axial dipole field

Volcanic records of excursional geomagnetic field behavior, in particular paleointensity estimates, are fragmentary for the Pleistocene. The West Eifel volcanic field is unique in that 12 of 66 measured lava flow sites record Virtual Geomagnetic Poles (VGPs) clustered between 34–45°N latitude and 30...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics of the earth and planetary interiors 2008-08, Vol.169 (1), p.28-40
Hauptverfasser: Singer, Brad S., Hoffman, Kenneth A., Schnepp, Elisabeth, Guillou, Hervé
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Volcanic records of excursional geomagnetic field behavior, in particular paleointensity estimates, are fragmentary for the Pleistocene. The West Eifel volcanic field is unique in that 12 of 66 measured lava flow sites record Virtual Geomagnetic Poles (VGPs) clustered between 34–45°N latitude and 30–50°E longitude over the Middle East and Southeast Asia. Paleointensity determinations reveal that 13 of 37 lavas erupted during times when the ambient field was weak. Specifically, results on nine transitionally magnetized and four normally magnetized lavas indicate paleofield intensities less than 30 μT associated with virtual dipole moments (VDMs)
ISSN:0031-9201
1872-7395
0031-9201
DOI:10.1016/j.pepi.2008.05.001