EarthRef.org Reference Database (ERR) -- Baksi & Farrar 1990

EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information

Baksi & Farrar 1990

Baksi, A.K. and Farrar, E. (1990). Evidence for errors in the geomagnetic polarity time-scale at 17–15 Ma: ⁴⁰Ar/³⁹Ar dating of basalts from the Pacific Northwest, USA. Geophysical Research Letters 17: doi: 10.1029/90GL01060. issn: 0094-8276.

40Ar/39Ar incremental heating studies have been carried out on whole-rock basalt samples from the Columbia River Basalt (CRB) and the Steens Basalt, to obtain crystallization ages with a standard error <1%. These high precision, accurate, ages are utilized with the known magnetostratigraphy of the CRB, to test the accuracy of the Early to Middle Miocene section of the geomagnetic polarity time-scales currently in use. We conclude that these time-scales underestimate the ages of various chrons within this time range by ~0.9 m.y. ¿ American Geophysical Union 1990

BACKGROUND DATA FILES

	Abstract

Keywords
Geomagnetism and Paleomagnetism, Reversals (process, timescale, magnetostratigraphy), Geochemistry, Geochronology, Information Related to Geographic Region, North America

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org