Sökning: "sen-ordovicium"

Hittade 2 uppsatser innehållade ordet sen-ordovicium.

1. 1. Metamorphic Evolution of the Tjeliken Garnet-Phengite Gneiss, Northern Jämtland, Swedish Caledonides

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Barbro Andersson; [2016]
   Nyckelord :Seve Nappe Complex; Scandinavian Caledonides; high-pressure metamorphism; U Pb zircon geochronology; garnet-phengite gneiss; Seveskollan; skandinaviska Kaledoniderna; högtrycksmetamorfos; uran-bly datering; högtrycksgnejs;

   Sammanfattning : The Tjeliken Mountain in northern Jämtland, central Scandinavian Caledonides is by most authors considered to belong to the Lower Seve Nappe Complex (SNC). However, recently P-T conditions similar to the Middle Seve have been constrained for the eclogite at the top of the mountain, revitalizing the tectonic debate about Tjeliken. LÄS MER

3. 2. Climate archives and the Late Ordovician Boda Event

   Kandidat-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Håkan Olsson; [2009]
   Nyckelord :Climate; Boda Event; Late Ordovician; Siljan district; Carbonate mud-mounds; klimat; Siljanområdet; sen-ordovicium; rev; Earth and Environmental Sciences;

   Sammanfattning : Climate change has become an increasingly important subject in geological research as past climates can teach us about the global climate systems. This thesis is a literature study on natural climate archives with examples from the Late Ordovician Boda Event. LÄS MER