| 释义 |
Salpausselkä Physical Geogr.|ˈsælpaʊsɛlkə|
Also -selka.
[Finnish.]
Each of two long, wide end moraines in southern Finland that are regarded as marking the last readvance of the ice sheet at the end of the Pleistocene.
1923Bull. de la Commission Géologique de Finlande No. 60. 8 The southern slope toward the Gulf of Finland and Lake Laatokka (Ladoga)..consists of two faces of different grade: (1) The larger inner part, the Lake District of Finland, extending to the belt of the recessional moraines of Salpausselkä (‘the damming ridge’) and (2) the narrower bow-shaped Coast zone between the Salpausselkä and the coasts of Lake Laatokka and the sea. 1937Wooldridge & Morgan Physical Basis Geogr. xxii. 390 The great sand and gravel ridge which extends from east to west through Finland and is known as the Salpausselka. 1957J. K. Charlesworth Quaternary Era II. xxxi. 675 The Salpausselkä readvance,..of 12,000 years ago, has been linked with a temporary increase of snowfall. Ibid. xlii. 1172 The First or Outer Salpausselkä has a maximum altitude of 70–80 m, an average width of 2·5 km. 1968R. W. Fairbridge Encycl. Geomorphol. 919/1 The upper boundary of the Pleistocene..must lie somewhere between 10,000 and 10,500 years B.P., and may be defined as..the time equivalents of sediments overlying the terminal moraines of the Valders (in North America) or the Salpausselkä (in Europe). |