ARE ARM AND TRM ANALOGS? THELLIER ANALYSIS OF ARM AND PSEUDO-THELLIER ANALYSIS OF TRM
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dc.contributor.author | Yu Y. | |
dc.contributor.author | Dunlop D.J. | |
dc.contributor.author | Ozdemir O. | |
dc.date.accessioned | 2021-12-20T03:45:28Z | |
dc.date.available | 2021-12-20T03:45:28Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=1329994 | |
dc.identifier.citation | Earth and Planetary Science Letters, 2003, 205, 3-4, 325-336 | |
dc.identifier.issn | 0012-821X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/33652 | |
dc.description.abstract | 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. | |
dc.subject | TRM | |
dc.subject | ARM | |
dc.subject | THELLIER METHOD | |
dc.subject | PSEUDO-THELLIER METHOD | |
dc.subject | DEMAGNETIZATION | |
dc.title | ARE ARM AND TRM ANALOGS? THELLIER ANALYSIS OF ARM AND PSEUDO-THELLIER ANALYSIS OF TRM | |
dc.type | Статья |
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