. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. HOLOCENE SUBMERGENCE ON REUNION ISLAND 73. Fig. 4. years IP. X1000 Rates of rise of sea-level on Reunion. appear too high if one considers those suggested for other subsiding volcanic areas: Micronesia (0,03 cm/year during the last 10 000 years: Bloom 1969), Mururoa (0,006 to 0,012 cm/year during the last 8 : Labeyrie et al. 1969) and atolls in the Pacific Ocean (average rates of submergence 0,002 to 0,004 cm/year: Hess 1965). The rates generally accepted for the degree of subsidence appear to be
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. HOLOCENE SUBMERGENCE ON REUNION ISLAND 73. Fig. 4. years IP. X1000 Rates of rise of sea-level on Reunion. appear too high if one considers those suggested for other subsiding volcanic areas: Micronesia (0,03 cm/year during the last 10 000 years: Bloom 1969), Mururoa (0,006 to 0,012 cm/year during the last 8 : Labeyrie et al. 1969) and atolls in the Pacific Ocean (average rates of submergence 0,002 to 0,004 cm/year: Hess 1965). The rates generally accepted for the degree of subsidence appear to be negligible by comparison with average speeds of transgression, being only about as great as the errors allowed on the calculation of these velocities of transgression. This being the case, the phenomenon of subsidence could not account for the large real differences in the rates of transgression on Reunion. Furthermore, prior to 5 500 years sea-level seems to have been 2 to 6 m lower on Reunion than eustatic level elswhere, according to evidence recently discovered in various parts of the world (Fig. 5). Conversely, the suggested curve seems to provide evidence that sea-levels were slightly higher on Reunion than elsewhere from 5 500 to 3 000 years This lack of correlation in the height of sea-levels during the period under discussion appears to be part of a general world-wide trend. Schofield (1967) and Morner (1971) postu- late respectively that this was due to the effect of astronomic and/or oceano- graphic factors such as the uneven distribution of ocean waters consequent upon the local addition of large amounts of glacial melt-water, variation in the density of ocean water or else fluctuations in the rate of rotation of the earth. Schofield (1967: 116) wrote that 'the level in the higher latitudes must have been initially higher than those in the equatorial regions'.. Please note that these images are extracted from scanned page images that may have been digital
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
