Sökning: "Pollen stratigraphy"

Hittade 5 avhandlingar innehållade orden Pollen stratigraphy.

1. 1. Event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden

   Författare :Jonas Björck; Michael J.C Walker; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Last Glacial-Holocene transition; event stratigraphy; eastern middle Sweden; pollen; plant macrofossils; marine calcareous fossils; microtephra; radiocarbon dating; clay varve chronology; GRIP; ice-core chronology; calendar year chronology; Preboreal oscillation; Yoldia Sea; Baltic Ice Lake; Quaternary Geology; kvartärgeologi;

   Sammanfattning : This thesis outlines an event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden. Events are short-lived occurrences that have left traces in the geological record and which, therefore, may be used for correlation and inter-regional comparisons. LÄS MER

3. 2. Pollen analysis, chronology and palaeomagnetism of three Late Weichselian sites in southern Sweden

   Författare :Jonas Ising; Kvartärgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; southern Sweden; calendar year chronology; Late Weichselian; Pollen stratigraphy; palaeomagnetic secular variations; Geology; physical geography; Geologi; fysisk geografi;

   Sammanfattning : Three sites, Torreberga in Skåne, Farslycke in Blekinge and Lake Bolmen in Småland, with Late Weichselian lake sediments were studied with respect to pollen analysis and palaeomagnetism. The chronologies are based on pollen stratigraphical correlations, radiocarbon dating and, for two of the sites, on a clay-varve chronology. LÄS MER

4. 3. Late Quaternary palaeoecological event stratigraphy in the Horton Plains, central Sri Lanka : with contributions to the recent pollen flora

   Författare :Rathnasiri Premathilake; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kvartärtiden; Sri Lanka;

   Sammanfattning : .... LÄS MER

5. 4. The Weichselian in southern Sweden and southwestern Baltic Sea : glacial stratigraphy, palaeoenvironments and deglaciation chronology

   Författare :Johanna Anjar; Kvartärgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : In this thesis the Weichselian glaciation history of southernmost Sweden and the southwestern Baltic Basin is discussed, with special emphasis on Middle and Late Weichselian ice advances and subsequent deglaciations. The main study area was Kriegers Flak in the southwestern Baltic Sea where pre-Late Weichselian sediments were identified. LÄS MER

7. 5. Plant species diversity patterns in a Swedish rural landscape : effects of the past and consequences for the future

   Författare :Sara A. O. Cousins; Roy Haines-Young; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Plant species richness in rural landscapes is threatened as grassland management ceases or changes, and as many remaining semi-natural grasslands are becoming increasingly fragmented. This thesis is a study of plant species diversity in a rural landscape in south-eastern Sweden, and its relationship to management history and landscape pattern. LÄS MER