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| Munschy, M; Schilich, R. |
| The Rodriguez Triple Junction (RTJ) corresponds to the junction of the 3 Indian Ocean spreading ridges. A detailed survey of an area of 90 km by 85 km, centered at 25 degree 30 degree S and 70 degree E, allows detailed mapping (at a scale of 1/100,000) of the bathymetry (Seabeam) and the magnetic anomalies. The Southeast Indian Ridge, close to the triple junction, is a typical intermediate spreading rate ridge (2.99 cm/a half rate) trending N140 degree . The Central Indian Ridge rift valley prolongs the Southeast Indian Ridge rift valley with a slight change of orientation (12 degree ). The half spreading rate and trend of this ridge are 2.73 cm/a and N152 degree respectively. A model is proposed to explain the evolution of the unstable RRF Rodriguez... |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37917/35998.pdf |
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| Munschy, M; Schlich, R. |
| The Indian Ocean is dominated by as system of 3 mid-ocean ridges converging at the Rodriguez Triple Junction located near 25 degree 30'S and 70 degree E. Numerous studies carried out on these 3 ridges provided the basic information on spreading rates and spreading directions. In 1984 the R/V Jean Charcot conducted a detailed survey over the Rodriguez Triple Junction and over an axial ridge segment located on each of the 3 associated ridges. The ridge axes are cut by distinct rift valleys; the depth of these rift valleys is a function of spreading rates. The rift valleys are not in isostatic equilibrium, but show clear density and mass deficits (0.4 to 0.8 g.cm super(-3) for spreading rate of 1 cm/a and 0.1 to 0.3 g.cm super(-3) for spreading rates of 3... |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00268/37894/35975.pdf |
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