Sen, Koushik ; Sharma, Ruchika ; Arora, B. R. ; Gupta, Vikram (2011) Influence of magnetic fabric anisotropy on seismic wave velocity in paramagnetic granites from NW Himalaya: Results from preliminary investigations Journal of the Geological Society of India, 76 (4). pp. 322-330. ISSN 0016-7622
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Official URL: http://doi.org/10.1007/s12594-010-0112-y
Related URL: http://dx.doi.org/10.1007/s12594-010-0112-y
Abstract
Anisotropy of Magnetic Susceptibility (AMS) and seismic wave velocity studies of some paramagnetic Himalayan granitoids show good correlation between magnetic fabric anisotropy and P wave velocity (Vp). Vp shows strong positive correlation with magnetic lineation (L) and degree of magnetic anisotropy (P′) having correlation coefficient (r) values of 0.93 and 0.89 respectively. Both Vp and Vs show positive correlation with the SiO2 content of Proterozoic and Paleozoic granitoids. Velocity of S wave (Vs) shows negative correlation with mean magnetic susceptibility (Km) having ‘r’ value of 0.86. The correlation between Vs-Km, Vp-P′, Vp-L also shows <95% probability in Spearman’s rank correlation. Based on the results from the present sample size it is suggested that, in paramagnetic granites, Vp is proportional to intensity of deformation and preferred orientation of minerals as well as the mineralogy. On the other hand, Vs is more dependent on the mineralogy alone.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer Nature |
| Keywords: | Paramagnetic granites, AMS, Primary wave, Secondary wave, Deformation, XRFNW Himalaya |
| ID Code: | 130972 |
| Deposited On: | 02 Dec 2022 04:28 |
| Last Modified: | 02 Dec 2022 04:28 |
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