CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Funder, S.; and Simonarson, L.A.;
Date : 1984
Title : Bio-and aminostratigraphy of some Quaternary marine deposits in West Greenland
Publication : Canadian Journal of Earth Sciences
Issue : 21(7):
Page(s) : 843-852
Abstract
14C dates and the geological setting of Quaternary marine deposits from three sites in West Greenland indicate a pre-Holocene age. The mollusc faunas at the sites are distinctly different, although all reflect influx of some subarctic water into Baffin Bay. The fauna from Patorfik is the most diverse subfossil Quaternary fauna known from Baffin Bay. Such species as Panopea norvegica and Balanus hameri indicate conditions warmer than the present, although no identical faunal assemblages are known. The fauna at Laksebugt is similar to modern faunas, but the dominating Portlandia arctica and Macoma moesta from Mudderbugt is reworked, but the presence of Chlamys islandica indicates that conditions were not entirely different from the present. Amino-acid analyses on shells from the three sites place them in three distinct aminozones, with Patorfik as the oldest and Laksebugt the youngest. Age estimates using this and geological and biological evidence suggest that the Laksebugt aminozone dates from the isotopic stage 5-6 transition (130 ka). The Patorfik aminozone is probably of mid- or early Quaternary age (235-1800 ka). Correlation with the few previously known pre-Holocene marine deposits of western Greenland implies that only one period of extensive glaciation can be recognized during the Weichsel (Wisconsin) glaciation.
Bibliography of Canadian Geomorphology