Wisconsinn.

1894 T. C. Chamberlin in J. Geikie Great 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.]

1895 Amer. Naturalist 29 240 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 T. C. Chamberlin in Jrnl. Geol. (Chicago) 4 875 While returning from my last visit to the field in which the Kansan, Illinoian, Iowan, and Wisconsin formations were seen in close succession, I made a memorandum of impressions respecting their relative ages.

1967 E. 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.

1981 J. 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.

1968 C. Embleton & C. A. M. King Glacial & Periglacial Geomorphol. 10 The links with North America, apart from the correlation of the Wisconsinan with the Würm/Weichselian, are more tenuous.

1978 Nature 8 June 456/2 These volcanics are thought to have been formed under ice of Wisconsinan age.

1981 F. 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.