Essays about: "Lower Palaeozoic"

Showing result 1 - 5 of 6 essays containing the words Lower Palaeozoic.

  1. 1. Kinematic Enrolment in Four Ordovician Trilobites Using Three-Dimensional Modelling

    University essay from Uppsala universitet/Paleobiologi

    Author : Alejandro Corrales Garcia; [2023]
    Keywords : 3D modelling; Blender; Dysplanus centrotus; enrolment kinematics; Gyrometopus lineatus; Illaenus sarsi; Ordovician; trilobites; Trilobiter; Enrollering; 3D-modellering; Blender; Modelos 3D; Blender; cinematica; enrollamiento; Ordovicico; trilobites;

    Abstract : Trilobites were a successful group of marine arthropods that thrived for much of the Palaeozoic Era. Akey innovation of trilobites involved the capacity to enrol their biomineralized exoskeletons for protection; a trait that appeared early in their evolutionary history during the Cambrian Period. READ MORE

  3. 2. Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Cameron Alessandrini; [2017]
    Keywords : Rb-Sr dating; Ar-Ar dating; Lower Seve Nappe; Scandinavian Caledonides; COSC drillhole.; Rb-Sr datering; Ar-Ar datering; Seveskollan; skandinaviska Kaledoniderna; vit glimmer; COSC borrkärna.;

    Abstract : The North Atlantic Caledonides are a continent-continent collision type orogeny found in WesternScandinavia, Svalbard, Greenland and the British Isles. They are thought to have formed as a result of a complex history consisting of repeated ocean opening and closure. READ MORE

  4. 3. Pressure-Temperature-time Constraints on the Deep Subduction of the Seve Nappe Complex in Jämtland and southern Västerbotten, Scandinavian Caledonides

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Johanna Holmberg; [2017]
    Keywords : Seve Nappe Complex; COSC-1; Raman spectroscopy; QuiG barometry; kyanite-garnet gneiss; Lu-Hf garnet geochronology; Seveskollan; COSC-1; Raman spektroskopering; QuiG barometri; kyanit-granatförande gnejs; Lu-Hf granat geokronologi;

    Abstract : The Scandinavian Caledonides are defined by long transported thrust sheets emplaced in a nappe stratigraphic succession onto the Paleozoic Baltica platform, as a result of the collision between the paleo-continents Baltica and Laurentia. This Palaeozoic collisional orogen is nowadays exposed at mid-crustal levels, thus provides an excellent ground for in situ studies of mountain building processes. READ MORE

  5. 4. 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

  6. 5. 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