Physics
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003e%26psl.205..325y&link_type=abstract
Earth and Planetary Science Letters, Volume 205, Issue 3-4, p. 325-336.
Physics
10
Trm, Arm, Thellier Method, Pseudo-Thellier Method, Demagnetization
Scientific paper
We test the possibility of using the pseudo-Thellier method as a means of determining absolute paleointensity. Thellier analysis of anhysteretic remanent magnetization (ARM) and pseudo-Thellier analysis of thermoremanent magnetization (TRM) have been carried out on a large collection of sized synthetic magnetites and natural rocks. In all samples, the intensity of TRM is larger than that of ARM and the ratio R (=TRM/ARM) is strongly grain size dependent. The best-fit slope (bTA) from pseudo-Thellier analysis of TRM shows a linear correlation with R. The ratio bTA/R yielded approximately correct paleointensities, although uncertainties are larger than in typical Thellier-type determinations. For single-domain and multidomain magnetites, alternating field and thermal stabilities of ARM and TRM are fairly similar. However, for ~0.24 μm magnetite, ARM is both much less intense and less resistant to thermal demagnetization than TRM, reflecting different domain states for the two remanences and resulting in severely non-linear Arai plots for Thellier analysis of ARM.
Dunlop David J.
Özdemir Özden
Yu Yongjae
No associations
LandOfFree
Are ARM and TRM analogs? Thellier analysis of ARM and pseudo-Thellier analysis of TRM 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 Are ARM and TRM analogs? Thellier analysis of ARM and pseudo-Thellier analysis of TRM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Are ARM and TRM analogs? Thellier analysis of ARM and pseudo-Thellier analysis of TRM will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1526725