| 释义 |
Riss Geol.|rɪs|
The name of a tributary of the Isar in Austria and Germany, adopted by A. Penck (in Penck & Brückner Die Alpen im Eiszeitalter (1909) I. i. 110) and used attrib. to designate the third (penultimate) Pleistocene glaciation in the Alps, and in conjunction with Würm to designate the following interglacial period. Also absol.
1910Zeitschr. f. Gletscherkunde IV. 244 The interval between the Riss and the Würm.., the Riss-Würm interglacial stage. Ibid., The moderate erosion..which the Riss drift has experienced. 1927[see Mousterian, moustierian a. and n.]. 1931Discovery Sept. 282/2 The fluvio⁓lacustrine deposits, rich in volcanic elements, of the Tiber Valley, which Roman geologists hold to be contemporary with the warm interglacial period intervening between the Riss and the Würm glaciations of the European Ice Age. 1944A. Holmes Princ. Physical Geol. xii. 247 The depth reached by weathering during Riss-Würm time is found to be about three times that achieved on similar but later deposits exposed during post-Würm time. Since the latter is about 25,000 years, it follows that the Riss-Würm interval cannot have been less than 75,000 years. 1968R. W. Fairbridge Encycl. Geomorphol. 335/1 There appears to be unanimity that during the Last Interglacial (Riss-Würm or Sangamon) there were sea-levels of the order of 7·5 meters..and 3·5 meters..higher than the present. 1971Nature 22 Jan. 253/2 It is now recognized that the species Homo sapiens is of at least Riss age. 1974Sci. Amer. June 96/1 The next to last major advance, known to scholars as the Penultimate Glacial (Riss II in the Alpine sequence), marked the end of the Middle Pleistocene some 125,000 years ago. |