ISSN:0300-9483    

DOI:10.1111/j.1502-3885.1974.tb00662.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

End moraines (called the Herdla Moraines) from the Younger Dryas Stadial arc morphologically mapped along the western coast of Norway, from Hardangerfjorden to north of Sognefjorden. The submarine position of the moraines are found by means of a conventional echo sounder. Stratigraphieal studies with many C14datings are used for age determination, giving Late Younger Dryas (10,000–10,500 C14years B.P.) for the Herdla Moraines. The moraines are correlated with the Ra‐Salpausselkä Moraines. Isobases for the Younger Dryas are obtained from marine terraces formed contemporaneously with the mora

ISSN:0300-9483    

DOI:10.1111/j.1502-3885.1974.tb00663.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

The subfossil occurrence ofMytilus edulisin central East Greenland has been C14‐dated to roughly between 8000 B.P. and 5500 B.P.; compared with other areas this is a short period. Its immigration coincides with the final deglaciation of the innermost fjords, and its disappearance is contemporaneous with an increase in cold‐climate plants, as shown by pollen spectra. It is suggested that it immigrated from the Svalbard area rather than from southeast Greenland, and that the central East Greenland fjord zone forms an isolated oasis, where more southerly species likeMytilusandChlamys islandicacan or could live, even if this was not possible along the surrounding and more hostile outer coasts. The reason for the absence ofMytilus edalisfrom the region today is probably not the local clim

ISSN:0300-9483    

DOI:10.1111/j.1502-3885.1974.tb00664.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Using analysis of marines cores from the Bay of Biscay as a basis, a system of different episodes of the Upper Pleistocene and the Holocene in the area of the Bay is presented. These episodes are characterized by several sedimentological and micropaleontological observations and particularly by the analysis of the coiling ratio of a few species of planktonic foraminifera. From the cores it is thus possible to determine the Holocene, the Würmian with its four glacial and three interglacial stages, and, at the base of the last glacial stage, the Riss‐Würm interglacial or its upper le

ISSN:0300-9483    

DOI:10.1111/j.1502-3885.1974.tb00665.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY