Essays about: "ordovicium"

Showing result 11 - 15 of 24 essays containing the word ordovicium.

1. 11. 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

3. 12. Cosmic ray tracks in chondritic material with focus on silicate mineral inclusions in chromite

   University essay from Lunds universitet/Geologiska institutionen

   Author : My Riebe; [2012]
   Keywords : extraterrestrial chromite; cosmic rays; cosmic ray tracks; ordinary chondrites; Ordovician; kosmisk strålning; spår efter kosmisk strålning; extraterrestrisk kromit; ordinära kondriter; ordovicium; Earth and Environmental Sciences;

   Abstract : It has been suggested that the cosmic ray flux varies as Earth moves relative to the spiral arms in the galaxy. However, no satisfying record over the cosmic ray flux over long time scales has been presented. READ MORE

4. 13. 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

5. 14. Maturity of kerogen, petroleum generation and the application of fossils and organic matter for paleotemperature measurements

   University essay from Lunds universitet/Geologiska institutionen

   Author : Yaser Abdullah Abdullah Al-Mashramah; [2011]
   Keywords : thermal alteration; thermal maturation; kerogen; petroleum generation; paleothermometres; vitrinite; conodonts; graptolites; palynomorphs; Earth and Environmental Sciences;

   Abstract : The origin, composition and maturity of kerogen, and its conversion to petroleum is reviewed. Various methods for estimating the maximum temperature to which kerogen and potential source rocks were subjected are also reviewed. READ MORE

6. 15. Microspherules from the lowermost Ordovician in Scania, Sweden : affinity and taphonomy

   University essay from Lunds universitet/Geologiska institutionen

   Author : Jan Ulmius; [2010]
   Keywords : Ordovician; microfossil; embryo; pyrite; apatite; pyritisation; phosphatisation; carbonisation; Alum Shale Formation; Sweden; Ordovicium; mikrofossil; pyrit; apatit; pyritisering; fosfatbildning; kolbildning; alunskiffer; Sverige; Earth and Environmental Sciences;

   Abstract : Microscopic spherules, 0.1-0.5 mm in diameter, from the lowermost Ordovician Rhabdinopora flabelliforme parabola graptolite Zone of the Alum Shale Formation in Södra Sandby, Scania, southern Sweden, have been investigated. READ MORE