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Reliability of geomagnetic paleointensity data: the effects of the NRM fraction and concave-up behavior on paleointensity determinations by the Thellier method
(ELSEVIER SCIENCE BV, 2005-06-15)
To test the reliability of the Thellier method for paleointensity determinations, we studied six historic lavas from Hawaii and two Gauss-age lava flows from Raiatea Island (French Polynesia). Our aim is to investigate the ...
Absolute Thellier paleointensities from Ponta Grossa dikes (southern Brazil) and the early Cretaceous geomagnetic field strength
(INST GEOPHYSICS UNAM, 2009)
We report a detailed rock magnetic and Thellier paleointensity study from similar to 130.5 Ma Ponta Grossa Dike Swarms in Southern Brazil. Twenty-nine samples from seven cooling units were pre-selected for paleointensity ...
Early Cretaceous absolute geomagnetic paleointensities from Córdoba province (Argentina)
(Springer Verlag Berlín, 2006-12)
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 ...
Paleointensity data from Early Cretaceous Ponta Grossa dikes (Brazil) using a multisample method
(TERRA SCIENTIFIC PUBL CO, 2009)
Definition of the long-term variation of the geomagnetic virtual dipole moment requires more reliable paleointensity results. Here, we applied a multisample protocol to the study of the 130.5 Ma Ponta Grossa basaltic dikes ...
High-resolution paleomagnetic secular variations and relative paleointensity since the Late Pleistocene in southern South America
(Pergamon-Elsevier Science Ltd, 2013-02)
Paleomagnetic inclination, declination and relative paleointensity were reconstructed from the sediments of Laguna Potrok Aike in the framework of the International Continental scientific Drilling Program (ICDP) Potrok ...
The cooling-rate effect on microwave archeointensity estimates
(Washington, 2013)
New microwave (MW) paleointensity data on historical bricks from Northeast Brazil presented a bias toward higher fields when compared to previous cooling-rate corrected double-heating paleointensity estimates; the same ...
An integrated paleomagnetic and multispecimen paleointensity study from the late Jurassic Zapicán dike swarm (Uruguay)
(Pergamon-Elsevier Science Ltd, 2020-12-22)
A rock magnetic, paleomagnetic and absolute intensity study was conducted on 21 basic dike swarms situated in the Zapicán area (Lavalleja, Uruguay). Paleomagnetic directions revealed mostly normal polarity magnetizations ...