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Hokkaido University Collection of Scholarly and Academic Papers >
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Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy >
Vol.XXII, No.2 >
A Paleomagnetic Reconnaissance of some late Precambrian to Early Paleozoic Rocks of Tansen Area, Lesser Himalaya, Nepal
| Title: | A Paleomagnetic Reconnaissance of some late Precambrian to Early Paleozoic Rocks of Tansen Area, Lesser Himalaya, Nepal |
| Authors: | Gautam, Pitambar Browse this author →KAKEN DB |
| Issue Date: | Aug-1987 |
| Publisher: | 北海道大学 |
| Journal Title: | 北海道大学理学部紀要 |
| Journal Title(alt): | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy |
| Volume: | 22 |
| Issue: | 2 |
| Start Page: | 259 |
| End Page: | 275 |
| Abstract: | For a preliminary paleomagnetic research on Late Precambrian to Early Paleozoic rocks in the Tansen area (West Central Nepal) carbonate, sandstone, quartzite and slate were collected from 30 sites at 4 localities. Detailed analyses of magnetic remanence were made using alternating field and thermal demagnetization techniques. Most of the specimens were found to be weakly magnetized (intensities of 10^-7 emu/cc, in order). Three magnetic components have been distinguished: (1) a predominant secondary component of recent origin, which represents a larger portion of the magnetization intensity in weakly magnetized specimens and thus hinders the separation of primary components. (2) another component (probably secondary), which yields a mean direction: D=320°, I=10°, a95=21° (before bedding correction) restricted only to purple slate varieties of Ramdighat Formation, and (3) a probably characteristic mean direction: D=350°, I=-45°, a95=15° derived from carbonate rock specimens of Kerabari Formation. This direction gives a virtual geomagnetic south pole position at 36°S/95°E. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/36749 |
| Appears in Collections: | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XXII, No.2
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Submitter: Gautam Pitambar
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