. The Earth beneath the sea : History . Fig. 14. 47° ll'N, 27° 19'VV. Depth 2798 m. East bank of median valley of Mid-Atlantic Ridge. Area of picture 4 by 5 m. (Photo by ) Shingle of very varied composition lying on a substratum of pteropod and Olobi- gerina ooze. Samples of shingle recovered from the trigger weight of the camera include quartz basalts and limestones. This is probably ice-rafted from the north. Note the disturbance of the shingle by animal holes and two ophiuroids in the fore- ground. One of the puzzles arising from underwater photographs is the formation of banks of wha
. The Earth beneath the sea : History . Fig. 14. 47° ll'N, 27° 19'VV. Depth 2798 m. East bank of median valley of Mid-Atlantic Ridge. Area of picture 4 by 5 m. (Photo by ) Shingle of very varied composition lying on a substratum of pteropod and Olobi- gerina ooze. Samples of shingle recovered from the trigger weight of the camera include quartz basalts and limestones. This is probably ice-rafted from the north. Note the disturbance of the shingle by animal holes and two ophiuroids in the fore- ground. One of the puzzles arising from underwater photographs is the formation of banks of what appears to be pebble-size gravel, but which have extremely sharp boundaries with what is evidently underlying Glohigerina ooze (Fig, 16). The sharpness of the boundary precludes the possibility that the pebbles have settled from above, and the pebble size makes it unlikely that they are moved
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectoceanbottom
