| 单词 | esker |
| 例句 | Every foot of the landscape from here on north would be scored and scarred with reminders of glaciation—scattered boulders called erratics, drumlins, eskers, high tarns, cirques. A Walk in the Woods 1997-11-01T00:00:00Z When the ice recedes, the sediment will remain to form a long sinuous ridge known as an esker. Physical Geology 2015-01-01T00:00:00Z When the ice recedes, the sediment remains as a long sinuous ridge known as an esker. An Introduction to Geology 2017-01-01T00:00:00Z An esker is essentially a fossilized river or streambed, filled with sand, gravel and rocks, Storrar said. Ancient Riverbeds Reveal Clues About Disappearing Glaciers 2014-02-04T18:29:00Z It is not to be inferred that eskers never originated in other ways, but it seems clear that this is one method, and probably the principal one, by which they came into existence. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z In places where the low ground is marshy, roads and railways often follow the ridge-lines of hills, Lines of communication. or, as in Finland, the old glacial eskers, which run parallel to the shore. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z Malaher spoke of a long esker that extends down the west side of Nueltin Lake and far to the southward; this, he said, forms a migration highway for the Caribou. The Barren Ground Caribou of Keewatin Glacial deposits, which overspread the lower grounds, sometimes afford good examples of the ridge-forms known as eskers, as in the neighbourhood of Bagenalstown. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" The material of the eskers ranges from coarse sand to pebbles four inches in diameter, the average size being from one to two inches. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 The esker is fully a quarter of a mile long, about thirty feet high, and four rods wide at its base. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z In the neighbourhood are seen striking examples of the glacial phenomenon of eskers, or gravel ridges. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" In Fred’s opinion, Caribou are apprehensive of sandy eskers as the haunt of Wolves, and do not linger there. The Barren Ground Caribou of Keewatin The fat brigadier drew bridle; Burley burst into French: "Esker—esker——" "Oui," nodded the brigadier, "that is where we are going." Barbarians The clean-washed esker gravels afford little encouragement to plant growth, and the rain water drains away rapidly through the porous gravel. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 These ridges of gravel and sand are known as osars or eskers. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z We may infer that eskers were deposited in the tunnels and ice-walled gorges of glacial streams before they issued from the ice front. The Elements of Geology In a swamp near the north end of the cemetery is a curved esker with lobes extending south and southwest. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 Burley burst into French again, like a shrapnel shell: "Esker—esker——" "Oui," said the fat brigadier, "there is an excellent inn up the street, messieurs." Barbarians All the eskers observed were found to be similar: they ranged in breadth across the top from 100 to 150 feet and the side slopes were about 20 degrees. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 The area of coarse till is bounded on the north by a long sinuous esker of coarse gravel terminating in a flat fan, which is superposed on a field of fine till. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 Hence the streams by which eskers were laid did not flow unconfined upon the surface of the ground. The Elements of Geology North of the area of boulders, eskers, and kames just described lies a swamp whose surface is 30 to 40 feet below the upper level of the kame gravels. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 Two and a half miles south of Lanesville on the west side of the lowland, a wooded esker extends for about one-quarter mile parallel to the valley axis and then merges into the rocky hillside. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 Only a single heavily wooded esker was found, and this ran through a forest region. Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 Behind the terminal moraines lie wide till plains, in places studded thickly with drumlins, or ridged with an occasional esker. The Elements of Geology |
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