Fróðskaparrit - 01.01.1971, Page 148

Fróðskaparrit - 01.01.1971, Page 148
156 A Palaeobotanical Study Indicating a Previking Settlement from the sampling site. The other macrofossils point in the same direction. Acknowledgements. This work has been carried out for the Geological Survey of Denmark, partly in Copenhagen and partly in Tórshavn. I wish to thank State Geologist Dr. Johs. Iversen for unfailing interest and help. Thanks are also due to Mr. H. Tauber for quick processinig of the radiocarbon samples. In Tórshavn I have had many valuable disoussions and much help from State Geologist Mr. Jóannes Rasmussen. In the laboratory Miss Lydia Didriksen assisted in preparing samples. Mrs. Lis Dam Guttesen made the drawings. I must also thank several men in Tjørnuvík — I am especially in- debted to the late Mr. Poul Johs. Jensen and his brother Per Jensen, Dávur Isaksen, and Per Hansen. I have received financial support from Fróðskaparsetur Føroya, for which I am grateful. Finally I would like to thank Mr. David Margo- lin for help with the English manuscript. ÚRTAK Hesi seinastu árini (1968—71) hava gróðrafrøðiligar kanningar verið gjørdar í Tjørnuvík. Endamálið við kanningunum var at vita, hvussu gróðurin hevur tikið seg upp har á staðnum seinastu 2000 árini og at vísa á eina møguliga ávirkan av fornari búseting. Rannsóknarstaðið, sum saest á myndunum, var upprunaliga tjørn. Úrslitið av kanningunum var óvæntað og vísir, at fó'lk hevur búsett seg í Tjørnuvík longu 600—650 e. Kr. Rannsóknirnar vóru gjørdar lutvís sum sáðgreining (pollenanalysa) t. e. kanningar av sáði ella flogi (pollen), sum er fokið út í tjørnina og lutvts sum kanning av fræi og øðrum plantuleivdum. Tvær sáðstrikumyndir (pollendiagram) eru vístar á 1. talvu og 2. talvu. Á teimum sæst, hvørjar broytingar í gróðrinum eru farnar fram frá elsta gróðrinum á staðnum til dagin í dag. Seriiga er at leggja til menkis land- námsstrikuna (landnam horizon). Á hesum dýpi fer tann broyting fram gróðrinum viðvfkjandi, sum ger, at vit kunnu siga, at fólk tá er komið á staðið. Broytingarnar eru í stuttum hesar: korn sæst fyrstu ferð, sama er við ókrúti sum hømliu. Leggsýra (sýrulaggur) og jóansøkugøtubrá gerast sera vanlig. Grasmongdin økist nógv av tí, at bøur verður veltur; av somu orsøk fækkast vátlendisplanturnar. Baraidur hvørvur — hevur óivað verið nýttur til at brenna.
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