Pattan, J. N.; Parthiban, G. (2006) Composition and Origin of Buried Ferromanganese Nodules from Central Indian Ocean Basin. Journal of the Geological Society of India, 68 (4). 606-609 doi:10.17491/jgsi/2006/680408
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Composition and Origin of Buried Ferromanganese Nodules from Central Indian Ocean Basin | ||
| Journal | Journal of the Geological Society of India | ||
| Authors | Pattan, J. N. | Author | |
| Parthiban, G. | Author | ||
| Year | 2006 (October 1) | Volume | 68 |
| Page(s) | 606-609 | Issue | 4 |
| Publisher | Geological Society of India | Place | Bangaluru, India |
| URL | |||
| DOI | doi:10.17491/jgsi/2006/680408Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 19416335 | Long-form Identifier | mindat:1:5:19416335:6 |
| GUID | 0 | ||
| Full Reference | Pattan, J. N.; Parthiban, G. (2006) Composition and Origin of Buried Ferromanganese Nodules from Central Indian Ocean Basin. Journal of the Geological Society of India, 68 (4). 606-609 doi:10.17491/jgsi/2006/680408 | ||
| Plain Text | Pattan, J. N.; Parthiban, G. (2006) Composition and Origin of Buried Ferromanganese Nodules from Central Indian Ocean Basin. Journal of the Geological Society of India, 68 (4). 606-609 doi:10.17491/jgsi/2006/680408 | ||
| In | (2006, October) Journal of the Geological Society of India Vol. 68 (4). Geological Society of India | ||
| Abstract/Notes | Abstract Five buned ferromanganese nodules were recovered at different depths of 167-169 cm (A), 172-174 cm (B), 228-230 cm (C), 328-330 cm (D) and 418-420 cm (E) in a 5 m sediment core from the siliceous sediment of Central Indian Basin (Lat 9°00'S, Long 76°00'E) at a water depth of 5260 m These nodules were analysed for major, trace and rare earth element (REE) concentrations to understand their genesis and compare with the surface and buried nodules in the top 1 m of the sediment column from the same basin Nodules A, B, C are of an early diagenetic (Mn/Fe ratio between 9 3 and 15 1), nodule D is of hydrogenetic (Mn/Fe ratio 1 6) and nodule E is of diagenetic (Mn/Fe ratio 3 0) origin Total REE concentration ranges between 164 and 497 ppm (av-348 ppm) and is nearly 2 to 3 fold lower than the surface and buried nodules REE are conveyed from the seawater to the nodules in association with a combined phase consisting of Fe - Ti - P The shale (NASC) - normalized REE pattern displays a small convex pattern with a positive Ce-anomaly indicating an oxidized environment while, the presence of positive Eu-anomaly in nodules A, B and C probably suggest an aeolian dust These buried nodules show a moderate middle and heavy REE enrichment (strong in nodules B and C) compared to light REE, but fractionation between middle and heavy REE is not very clear It appears that not much significant post -depositional changes have occurred in these buned nodules | ||
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