CGRG Bibliography of Canadian Geomorphology
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Author : Fillon, R.H.; and Duplessy, J.C.
Date : 1980
Title : Labrador Sea bio-, tephro-, oxygen isotopic stratigraphy and Late Quaternary paleoceanographic trends
Publication : Canadian Journal of Earth Sciences
Issue : 17(7):
Page(s) : 831-854
Abstract
A stratigraphic framework for eastern Labrador Sea cores has been developed for the interval 0-90000 years BP through analysis of oxygen isotopes, volcanic ash, benthonic foraminifera, and the radiolarian Diplocyclas davisiana. Benthonic and planktonic foraminiferal isotope stratigraphy and the time scale of Shackleton and Opdyke provide a basis for the approximate dating of a series of marker events which include ash zones ... benthonic foraminiferal abundance maxima ... and D. davisiana percentage maxima .... Incursions of subpolar planktonic foraminifera into the area ... suggest that the eastern Labrador Sea was free of sea ice, at least in summer during periods of rapid continental ice sheet growth .... A larger than normal ... difference in the isotopic composition of benthonic foraminifera (1.8 o/oo) implies that this open water and attendant surface cooling was a potential source for colder than modern deep water. In contrast theNorwegian Sea was a reservoir of warmer than modern deep water during the last glacial.
Bibliography of Canadian Geomorphology