Computer Science
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ep%26s...58.1333r&link_type=abstract
Earth, Planets and Space, Volume 58, p. 1333-1339.
Computer Science
2
Scientific paper
We present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7×1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Córdoba lavas agree remarkably well with those obtained from the Paranó Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of 'Mesozoic Dipole Low'.
Alva-Valdivia Luis M.
Geuna Silvana E.
Goguitchaichvili Avto
Morales Jaime
Ruiz R. C.
No associations
LandOfFree
Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-875332