Essays about: "Silur"

Showing result 6 - 10 of 15 essays containing the word Silur.

1. 6. The fossil wonders of the Silurian Eramosa Lagerstätte of Canada : the jawed polychaete faunas

   University essay from Lunds universitet/Geologiska institutionen

   Author : Jesper Härling; [2012]
   Keywords : scolecodonter; polychaeter; silur; palaeobiogeography; palaeoecology; Silurian; Eramosa Lagerstätte; scolecodonts; polychaete faunas; paleoekologi; paleobiogeografi.; Earth and Environmental Sciences;

   Abstract : The Silurian Eramosa Lagerstätte in Ontario, Canada, is represented by three distinguished biotas (1 to 3) with exceptionally well preserved fossils. In this study, the jawed polychaete fauna is described and discussed for the first time, on the basis of scolecodonts and jaw apparatuses, recovered from Biota 1 and 3. READ MORE

3. 7. An interpretation of oncoid mass-occurrence during the Late Silurian Lau Event, Gotland, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Martin Qvarnström; [2012]
   Keywords : Bjärsjölagård; Gotland; microbialites; Silurian; Oncoids; Lau Event; ecological crisis; Onkoider; Silur; microbialiter; ekologisk kris; Earth and Environmental Sciences;

   Abstract : The geological significance of the microbial-formed oncoid is not as well understood as the recognized, analogous stromatolite but can, as well be used as an environmental indicator. In association with the larger Phanerozoic mass extinctions, a resurgence of microbialites as a disaster fauna is at present an accepted view. READ MORE

4. 8. Stratigraphy, facies and depositional history of the Colonus Shale Trough, Skåne, southern Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Magnus Eriksson; [2012]
   Keywords : Sweden; tec-tonic subsidence; gamma ray; backstripping; Lower Palaeozoic; Colonus Shale Trough; Sorgenfrei-Tornquist Zone; Colonustråget; Sorgenfrei-Tornquistzonen; underpaleozoikum; tektonisk subsidens; Sverige; Earth and Environmental Sciences;

   Abstract : Colonustråget är en viktig tektonisk enhet i den s.k. Sorgenfrei-Tornquistzonen i Skåne, södra Sverige. Den sedimentära sekvensen består av en kambrisk till silurisk succession dominerad av finkorniga klas-tiska sediment samt en mindre del kalksten. READ MORE

5. 9. Sequence stratigraphy, palynology and biostratigraphy across the Ordovician-Silurian boundary in the Röstånga-1 core, southern Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Ahmed Salah Badawy; [2012]
   Keywords : avsättningsmiljöer; stratigrafi; Sweden; Scania; Röstånga; Silurian; Ordovician; TAI; Thermal Alteration Index; palynology; sea level changes; stratigraphy; depositional environments; havsnivåförändringar; palynologi; Ordovicium; Silur; Skåne; Sverige.; Earth and Environmental Sciences;

   Abstract : A multiproxy study on sedimentary rocks spanning the Ordovician-Silurian boundary has been performed on material from the Röstånga-1 core, with the aims to improve the biostratigraphical and sedimentological framework and to interpret the depositional environment during this interval in Earth’s history. The sedimentary succession in the Röstånga-1 core is developed in the Scanian Lithofacies Belt and is considered an excellent upper Middle Ordovician-Lower Silurian reference section for southernmost Sweden. READ MORE

6. 10. The spore record of early land plants from upper Silurian strata in Klinta 1 well, Skåne, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Kristina Mehlqvist; [2009]
   Keywords : Silurian; spores; flora; palynology; Klinta 1 drillcore; silur; sporer; palynologi; Klinta borrkärna 1; Earth and Environmental Sciences;

   Abstract : Prover från Öved-Ramsåsagruppen i Skåne från övre Silur har undersökts palynologiskt, främst med avseende på sporer från landväxter. Sedimenten består av karbonater med silisiklastiskt innehåll och paleomiljön har tolkats till ett strandnära marint ekosystem. READ MORE