Essays about: "Ordovicium"

Showing result 16 - 20 of 24 essays containing the word Ordovicium.

  1. 16. Climate archives and the Late Ordovician Boda Event

    University essay from Lunds universitet/Geologiska institutionen

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

    Abstract : 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. READ MORE

  3. 17. Linguliform Brachiopods from the terminal Cambrain to lower Ordovician Tiñu section, Mexico

    University essay from Uppsala universitet/Paleobiologi; Uppsala universitet/Universitetsbiblioteket

    Author : Barbro Bornsäter; [2008]
    Keywords : Linguliform; Brachiopods; Acrotretid; Siphonotretid; Tiñu Formation; Cambrian; Ordovician; Linguliforma; Brachiopoder; Acrotretida; Siphonotretida; Tiñu formationen; Kambrium; Ordovicium;

    Abstract : Tiñuformationen i Oaxaca, Mexiko är den enda fossilförande enheten från undre paleozoikum mellan den Laurentiska plattformen i nordvästra Mexiko och de Gondwanska lagerföljderna i Sydamerika. Det har nyligen visats att Tiñusektionen är en koncentrerad passiv kantlagerföljd med Gondwanakaraktär. READ MORE

  4. 18. A model of reconstruction for the oral apparatus of the Ordovician conodont genus Protopanderodus Lindström, 1971

    University essay from Lunds universitet/Geologiska institutionen

    Author : Johanna S. Mellgren; [2005]
    Keywords : conodonts; Protopanderodus; apparatus reconstruction; Ordovician; conodonter; apparatrekonstruktion; ordovicium; Earth and Environmental Sciences;

    Abstract : Element från det ordoviciska conodontsläktet Protopanderodus Lindström, 1971 har studerats i syfte att sätta upp en modell för rekonstruktion av släktets tandapparat. Totalt har 4202 element från de fem Protopanderodus-arterna i den svenska mellanordoviciska conodontfaunan ingått i studien. Fyra av arterna, P. rectus, P. READ MORE

  5. 19. 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

  6. 20. Silurian graptolites from Bohemia, Czech Republic

    University essay from Lunds universitet/Geologiska institutionen

    Author : Christian Persson; [1999]
    Keywords : Bohemian Massif; Prague Basin; Silurian; graptolites; monograptids; correlation; Earth and Environmental Sciences;

    Abstract : The only relatively undisturbed Ordovician to Middle Devonian sequence in the Bohemian Massif is preserved in the central parts of the Prague Basin. This part stretches c. 35 km from Prague in the north towards Zelkovice in the southwest. During Ordovician and Silurian times this area is thought to have been a part of the northern Gondwana margin. READ MORE