Essays about: "graptolites"

Showing result 1 - 5 of 7 essays containing the word graptolites.

  1. 1. Diversity and Evolution of Silurian Radiolarians

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Martin Tetard; [2016]
    Keywords : Radiolaria; Silurian; Canadian Arctic; Paleobiodiversity; Diversity trends; CT-Scan; Radiolaria; silur; diversitetsmönster; kanadensiska Arktis;

    Abstract : The three approaches followed herein aim to improve our understanding of the paleobiodiversity andevolution of Silurian radiolarians. The first approach provides an exhaustive taxonomic description ofan entirely new radiolarian fauna recovered from two sections of the Cape Phillips Formation in theCanadian Arctic which accumulated in two different paleoenvironmental settings. READ MORE

  3. 2. 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

  4. 3. 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

  5. 4. 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

  6. 5. Early Ludlow (Silurian) graptolites from Skåne, southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Andreas Nilsson; [2003]
    Keywords : Colonus Shale; limestone; graptolites; Ludlow; colonusskiffer; kalksten; graptoliter; Skåne; Earth and Environmental Sciences;

    Abstract : The Colonus Shale consists of light grey, greenish or bluish shale with some carbonate. At some localities mica and thin layers of grey limestone are also present. The Colonus Shale has an estimated thickness of 600-1100 m in Skåne. READ MORE