| 释义 |
Wisconsin Geol.|wɪsˈkɒnsɪn|
The name of a state of the north central U.S.A., used attrib. and absol. to designate (the time of) the fourth and final Pleistocene glaciation of North America, corresponding to the Würm glaciation of the Alps.
[1894T. C. Chamberlin in J. Geikie Gt. Ice Age (ed. 3) xlii. 763 All this complex is grouped under a single term—the East-Wisconsin formation—because the grounds for a formal subdivision are not yet sufficiently clear.] 1895Amer. Naturalist XXIX. 240 The second, third, and fourth glacial stages of the European Ice age..were probably also time equivalents, respectively, with the Kansan, Iowa, and Wisconsin stages in the United States and Canada. 1896, etc. [see Illinoian a.]. 1967E. B. Leopold in Martin & Wright Pleistocene Extinctions 235 Taylor considers that the Pliocene and Quaternary climates before the late Wisconsin were much less continental than now. 1981J. E. Sanders Princ. Physical Geol. xiii. 332 The last ice mass to cover the Great Lakes basin arrived during the late Wisconsin Stage, starting 20,000 years ago.
Hence Wiˈsconsinan a. (also absol.).
1968[see Weichsel]. 1978Nature 8 June 456/2 These volcanics are thought to have been formed under ice of Wisconsinan age. 1981F. W. Shotton in Neale & Flenley Quaternary in Brit. xiii. 142 This is the way the Wisconsinan ice invading the U.S.A. from the Canadian Shield is interpreted. |