. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. BLOCKS OF ICE HUNG IN THE WIND AT THE WINTER QUARTERS IN ORDER TO ASCERTAIN THE RATE OF EVAPORATION yio face j). 278 ALGOUS PEAT 279 the slush In the lake water was piled up on the leeward side of the lake in smallridges. At the north end of this lake the algous deposit is very sparse except forshort distances, within 2 feet, of the ice margins, where in places it is fairly maximum width of the algous belt is at the north-east corner of the lake, whereit
. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. BLOCKS OF ICE HUNG IN THE WIND AT THE WINTER QUARTERS IN ORDER TO ASCERTAIN THE RATE OF EVAPORATION yio face j). 278 ALGOUS PEAT 279 the slush In the lake water was piled up on the leeward side of the lake in smallridges. At the north end of this lake the algous deposit is very sparse except forshort distances, within 2 feet, of the ice margins, where in places it is fairly maximum width of the algous belt is at the north-east corner of the lake, whereit is about 12 paces wide ; this decreases to 6 paces in width at the noith-westcorner, where three distinct ridges are to be detected raised sharply 1, 2, or 3 incheshigh respectively at 3, 4, and oh paces outwards from the lake margin. These small Ft. In. 0 1 0 OyV 0 li 0 10 0 10 Layers of ice separated from one1 another by layers of bubbles. I Ice divided into eleven laminaiI by sheets of bubbles. Ice strongly fibrous and pris-matic, with numerous verticalbubble holes. The bottom icefor 6 inches in depth isyellow:. Teet Inches i_U 1210 10 :a yO9 0 9 Peaty fungus and ice mixed. (-Alternating laminas of fungus-, , peat and ice passing Jown- j wards into 4 inches of grittyI peat. „ n I Pebbles of kenyte lava withI algse, cemented by ice. FiG. 65. Section through deposit of Algous Peat, Coast Lake, Cape Eoyds ridges perhaps represent the level of the surface of the lake at different the same time they are in part due to the piling up action of the small wavesof the lake during blizzards. In places the algas are sufficiently abundant to forma species of algous peat. The only lake where this was observed to be the casewas Coast Lake. The general character of this and the layers of ice with whichit is associated is shown on the accompanying section. Another section was compiled from the evidence obtained by three trenchesand two bores in Coast Lake. These have shown the
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Keywords: ., boo, bookcentury1900, booksubjectgeology, booksubjectpaleontology
