Temperate Water Planktonic Foraminifera in Quaternary Sediments of the Arctic Ocean

Marine Geology and Oceanography of the Arctic Seas

“…in the Brunhes epoch, a time of conspicuous climatic fluctuations, as indicated by temporal variations in the faunal composition and in the fauna/mineral ratio. Foraminifera-rich and foraminifera-poor layers alternate in these sediments (Herman, 1969(Herman, , 1971aFig. 2).…”

“…RI = Radioisotopically dated core. Dark and light circles show the location of important previously studied cores (Herman, 1964(Herman, , 1969(Herman, , 1970a. For a complete list of core locations see Table I.…”

“…Thus, the answer to the origin of gravels lies in proving whether or not in the recent geological past the Beaufort Sea shelf was completely free from ice cover. On the basis of researches carried out on long sediment core samples several geologists (Ericson et aI., 1964;Herman, 1964Herman, , 1969Hunkins et aI., 1971;01ausson and Jonasson, 1969) have surmised that there has been no great change in the nature of ice cover in the Canada Basin and immediate surroundings since Wisconsin time. However, results of the Canada Basin studies probably cannot be extended to the Beaufort Sea shelf, which is nearer the coast and has relatively shallow depths.…”

“…The shaded zones indicate foraminifera-rich beds; the white zones indicate foraminifera-poor beds. Modified after Herman (1964). probably during the Gauss epoch, consists of Mn and Fe oxide rich, foraminifera-poor silty-lutites. Planktonic foraminifera exhibit evidence of partial solution.…”

“…Green, 1960;Herman, 1964Herman, -1971Ericson et aI., 1964). The main objectives of this chapter are to review data on lithology, fauna, and oxygen isotope measurements on foraminiferal tests and to present new results based on the author's research.…”