[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . On these and similar movements the shape and structureof rubbish-heaps dropped from ice on a sea-bottom must de-pend. The glass tank shows the structure of such mounds,and it coincides with the structure of moimds of drift which 379 occur in ice-ground countries like Scandinavia and the BritishIsles. The glass gives a section of the rubbish-heap whichfell through water from floating ice, and it shows that themound is roughly stratified. The coarsest and heaviest mate-rials win the
[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . On these and similar movements the shape and structureof rubbish-heaps dropped from ice on a sea-bottom must de-pend. The glass tank shows the structure of such mounds,and it coincides with the structure of moimds of drift which 379 occur in ice-ground countries like Scandinavia and the BritishIsles. The glass gives a section of the rubbish-heap whichfell through water from floating ice, and it shows that themound is roughly stratified. The coarsest and heaviest mate-rials win the race to the bottom, and the rest follow and fallupon them. The mound is conical, and a section of it showsbeds of various materials, packed in conical layers. Gravel goesstraight to the bottom, sand follows, fine river-mud hangs instill water for days, but mud settles at last, and it forms thehighest layer. In a stream such mud would travel far. The original shape of an iceberg does not affect the shapeof the mound which it leaves when it melts. The woodcut was drawn from a model contrived to illus-trate thi
Size: 1978px × 1263px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookpublisheredinburghsn, booksubjectgeo, booksubjectmeteorology
