Deltaic Sand and Gravel
GeomorphologyAs the Laurentide glacier retreated from the Champlain Valley 13,600 years ago, the ice dammed the valley and Glacial Lake Vermont rose to about 170 m (550 feet) above sea level, which is the approximate elevation of the camera. This sand and gravel was carried by an ice-marginal river which built kame terraces until it reached the lake where it dumped fine sediments into the standing water. The sand and gravel formed a delta more than 4 km long in the area near Lower Plains Road and south of Beaver Pond Road. Forest CommunityThere is no record of the forest that once grew on this surface in the town forest. To the south of the property where the surface is still intact, a forest of oaks, red maple, and beech is present. North of the property where groundwater wets the soil, sugar maple and hemlock are common. On the surface of this delta west of Halnon Brook the water table is deep, and an unusual dry forest with pitch pine is present. Maybe someone in town remembers what kind of trees were logged from the property when the landfill was established. GigaPanThis panorama is made from 336 images taken on October 15, 2009. It covers a field of view of 126 degrees. |
HistoryThis quarry is the source of material that is spread on snow-covered roads in Salisbury. The town started using this area as a source of sand and as a dumping area around 1960. The current landfill began operating in 1989. Important Species
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