. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. were taken indicate depths of from350 to 450 fathoms within 12 miles of the coast, deepening to over 650 fathoms inthe neighbourhood of a large glacier, like that which forms the Drygalski Ice BarrierTongue. The following is a section across this coastal platform from Mount Davidsonto Mount Erebus : It will be noticed that after the soundings, taken from W. to E., deepen to 350fathoms at 12 miles E. of the coast platform, they shoal to 110 fathoms in the middleof M
. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. were taken indicate depths of from350 to 450 fathoms within 12 miles of the coast, deepening to over 650 fathoms inthe neighbourhood of a large glacier, like that which forms the Drygalski Ice BarrierTongue. The following is a section across this coastal platform from Mount Davidsonto Mount Erebus : It will be noticed that after the soundings, taken from W. to E., deepen to 350fathoms at 12 miles E. of the coast platform, they shoal to 110 fathoms in the middleof McMurdo Sound, then deepen again to 460 fathoms at only three miles off the westcoast of Ross Island. This shallowing towards the centre of the Sound is probably due to the vast amountof morainic material carried northward by the former Great Ice Barrier, when at itsmaximum, from the neighbourhood of Mount Discovery, or possibly it may be due to asubmerged chain of small volcanoes. Probably the former is the correct explanation. * I. C. ;ell, 1899 ; R. S. Tarr. 1907 ; L. Martin, 1909. B 10 THE ROSS SEA AND McMURDO SOUND. M^ S SEA oBeaufort I. ^iiotw M3(«0 V» showing line oF Section CCOCRAPHICAL K/tlt-CS lO 5 O 10 1 I I I I I I I I I I I so
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Keywords: ., boo, bookcentury1900, booksubjectgeology, booksubjectpaleontology
