1973/10/09 by Donald F. Heinrichs · 2 citations
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · #Geomagnetism and Paleomagnetism Studies #Geology and Paleoclimatology Research #Geological and Geochemical Analysis #Earth's magnetic field #Lava #Paleomagnetism #Geology #Natural remanent magnetization #Remanence #Geophysics #Magnetization #Cascade #Geomagnetic pole #Secular variation #Magnetic anomaly #Seismology #Geodesy #Volcano #Magnetic field #Physics
paper · doi:10.1029/jb078i026p05983
openalex publication_date 1973/10/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
The natural remanent magnetization of 94 oriented cores from nine recent lava flows was measured. The field area is located in the Three Sisters area of the Oregon Cascades. The maximum possible age range for the flows is from 300 to 12,000 years B.P.; eight of the nine flows are younger than 3850 years. The mean direction of magnetization (D = 2.2°, I = +49.6°, α95 = 5.2°) is statistically distinct from the axial geomagnetic dipole field (D = 0°, I = +62.9°). It is not clear whether this mean direction is a significant departure of the main geomagnetic field from an axial direction or part of the ‘normal’ secular change.