...Ludlow Cave, in the caprock on the southeastern edge of the North CaveHills, was formed by water erosion, resulting in numerous pockets andcrevises in the ceiling and walls... 
Kenneth W. Andersen 「Mammals of Northwestern South Dakota」
...Less spectacular, but nevertheless important, problems confrontingconservationists include streambank erosion, channel deterioration,silting, recreational demands for water, and irrigation needs...
Artie L. Metcalf 「Fishes of Chautauqua, Cowley and Elk Counties, Kansas」
...Plate shows in a measure the extent of this erosion...
Cosmos Mindeleff 「The Repair Of Casa Grande Ruin, Arizona, in 1891」
...External contour isof course a product of erosion, yet similarity of contour does notnecessarily indicate either equal erosion or equal antiquity...
Cosmos Mindeleff 「Casa Grande Ruin」
..." It is probably due to stream erosion...
Gerard Fowke 「Archeological Investigations」
...Clearly, these threeformations were of an age that witnessed the erosion of the cave...
Gerard Fowke 「Archeological Investigations」
...The antiquityof these ponds is denoted by the amount of silt partially fillingthem, brought down from the mountains by erosion of the soil...
Gerard Fowke 「Archeological Investigations」
...Montezuma Well () is an irregular, circular depression,closely resembling a volcanic crater, but evidently, as Dr Hoffman wellpoints out, due to erosion rather than to volcanic agencies...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
...This is a neat, finely-decussated, concolorous species, with the upperwhorls nodulous from erosion, as in Vivipara praerosa, Gerst...
John McDouall Stuart 「Explorations in Australia, The Journals of John McDouall Stuart」
ランダム例文：
rupture pallor ambitions
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