. The earth and its inhabitants ... Geography. this source, and the marine algaj cither perish shiwly or give phice to fresh-water phmts of rapid growth. The Dramms-tiord, fed by the Dramms-elv, the second largest river in Norway, resembles other formations of the same kind in its uniform width of 1 to 2 miles, and mean depth of 350 feet. But at the Sverdviken defile it suddenly contracts to a stream 16 feet deep and a few hundred yards wide, running seawards with a current of 9 miles an hour during the flow, and about 5 at ebb. Most of the fiords are partially obstructed at their entrance by
. The earth and its inhabitants ... Geography. this source, and the marine algaj cither perish shiwly or give phice to fresh-water phmts of rapid growth. The Dramms-tiord, fed by the Dramms-elv, the second largest river in Norway, resembles other formations of the same kind in its uniform width of 1 to 2 miles, and mean depth of 350 feet. But at the Sverdviken defile it suddenly contracts to a stream 16 feet deep and a few hundred yards wide, running seawards with a current of 9 miles an hour during the flow, and about 5 at ebb. Most of the fiords are partially obstructed at their entrance by the remains of old moraines, which in the north are called havhroen, or "sea ; Both sides of the Gulf of Christiania are regularly lined with the shingly deposits of such ancient moraines. But what is the origin of the bars occurring at certain intervals from the mouth to the upper end of the fiords ? Some are ridges between two valleys resembling those of the upheaved land ; some are slopes produced by erosion ; while others, no doubt, are moraines like those deposited by former glaciers at the foot of the hills in the upheaved valleys. For, like the Scottish firths, the Scandinavian fiords existed before the glacial period, and were able to maintain their original form by means of the vast glaciers filling and deepening their beds, and grinding smooth their rugged sides. In warmer or more humid regions the estuaries were slowly filled in by the alluvia of the streams or the sands of the sea, whereas the fiords retained their original depth, often below the bed of the neighbouring seas, which accordingly advanced as the glaciers retired. But since then the running waters and the ocean have begun the vast geological work of filling in these northern estuaries. The rivers bring down their alluvia, depositing them in regular strata at the foot of the hills, while the sea precipitates, in even layers of sand or mud, the detritus washed away by the waves. The work
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Keywords: ., bookcentury1800, bookdecade18, booksubjectgeography, bookyear1883
