. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 163.—Globigerina Ooze, consisting largely of FORAMINIFERAN SHELLS ( BLAKE).. Fig. 164.—Pteropod Ooze, consisting mainly of Pteropodand Foraminiferan Shells ( Blakk ). These figures were originally taken from the ChallengerReports. 224 THE SEA FLOOR B.—Terrigenous Deposits. 6. Blue Mud.—This deposit is the one most fre-quently met with in the deeper waters surroundingcontinental land and in enclosed and partially en-closed seas. It is principally composed of materialsderived from
. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 163.—Globigerina Ooze, consisting largely of FORAMINIFERAN SHELLS ( BLAKE).. Fig. 164.—Pteropod Ooze, consisting mainly of Pteropodand Foraminiferan Shells ( Blakk ). These figures were originally taken from the ChallengerReports. 224 THE SEA FLOOR B.—Terrigenous Deposits. 6. Blue Mud.—This deposit is the one most fre-quently met with in the deeper waters surroundingcontinental land and in enclosed and partially en-closed seas. It is principally composed of materialsderived from the disintegration of continental land,consisting largely of the fragments and mineralsof continental rocks (the older crystalline and schisto-crystalline rocks, quartzites, sandstones and lime-stones) of various dimensions, but usually larger nearshore and smaller as the deep sea is approached,except in the regions affected by floating ice. Quartzis the characteristic mineral species, associated withorthoclase and plagioclase felspars, green hornblende,mica, etc ; glauconite is usually present, but not insuch abundance as in the Green Mud. There is usuallya considerable proporti
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectocean, bookyear1912
