Magnetostratigraphy of the Eldorado Mountains volcanic complex and the calibration of the early to middle Miocene polarity time scale

Details Magnetostratigraphy of the Eldorado Mountains volcanic complex and the calibration of the early to middle Miocene polarity time scale Magnetostratigraphy of the Eldorado Mountains volcanic complex and the calibration of the early to middle Miocene polarity time scale

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30l..37w&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 12, pp. 37-1, CiteID 1635, DOI 10.1029/2003GL017085

Mathematics

Logic

2

Geochemistry: Geochronology, Geomagnetism And Paleomagnetism: Magnetostratigraphy, Geomagnetism And Paleomagnetism: Reversals (Process, Timescale, Magnetostratigraphy), Information Related To Geologic Time: Cenozoic

Scientific paper

Magnetic polarity measurements from a well dated (15.6-13.7 Ma) volcanic section in southern Nevada allow resolution of controversies in the calibration of the Middle Miocene polarity time scale. A sequence of lavas yielding exclusively reversed polarities dated at 15.5-14.9 Ma can be confidently identified as C5Br, and the C5Cn.ln(y) reversal is bracketed between 15.67 and 15.48 Ma (relative to TC = 27.92 Ma). Integration with other recent studies shows that polarity chrons C5Cr-C5ABr are now confidently correlated with lava flows dated from 16.9 to 13.4 Ma by the 40Ar/39Ar method.

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