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Revised age calibration points for the geomagnetic polarity time scale
Author(s) -
Wei Wuchang
Publication year - 1995
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 - 10.1029/95gl00377
Subject(s) - earth's magnetic field , polarity (international relations) , calibration , geology , cenozoic , scale (ratio) , magnetostratigraphy , paleomagnetism , geodesy , geomagnetic reversal , paleontology , geophysics , geography , physics , magnetic field , mathematics , cartography , statistics , quantum mechanics , structural basin , cell , biology , genetics
Two of the seven Cenozoic age calibration points in the widely used Cande and Kent's geomagnetic polarity time scale have recently been revised. The rest of the five calibration points are revised here based on recently available radioisotopic dates and magnetostratigraphic data. Ages of the magnetic reversals are recalculated using the revised calibration points. Differences between the present time scale and Cande and Kent's revised time scale are generally less than 0.3 m.y., the largest (up to 1.3 m.y.) being in the early Miocene.