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Paleomagnetic data from the Coso Range, California and current status of the Cobb Mountain normal geomagnetic polarity event
Author(s) -
Mankinen Edward A.,
Grommé C. Sherman
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i011p01279
Subject(s) - polarity (international relations) , cobb , earth's magnetic field , geology , paleomagnetism , range (aeronautics) , event (particle physics) , geophysics , geodesy , magnetic field , physics , astrophysics , chemistry , materials science , genetics , quantum mechanics , cell , composite material , biology , biochemistry
Two basalt flows which erupted about 1.08 m.y. ago in the Coso Range, California, have normal magnetic polarity and thus provide additional evidence for the Cobb Mountain normal polarity event. A review of available data confirms that this event was of geomagnetic origin. A mean age of 1.10 ± 0.02 m.y. B.P. for the Cobb Mountain normal polarity event was found to best fit all available radiometric and geologic data.