Essays about: "palaeoenvironments"

Found 4 essays containing the word palaeoenvironments.

  1. 1. Arctica Islandica – Annually Banded Mollusc Offers High Temporal Resolution Record Into End Of North Sea Little Ice Age

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Eilidh Towers; [2022]
    Keywords : sclerochronology; Arctica islandica; palaeoenvironments; Little Ice Age; radiocarbon reservoir effect;

    Abstract : Sclerochronology affirms the well-established fact that banded growth increments in marine molluscs accurately record oscillations in climate and environment for the past millennia or more. This study considers how such records can enhance understanding of environmental shifts across the 18th to 20th centuries. READ MORE

  3. 2. Palaeoenvironments of the Earliest (Middle Devonian) Tetrapod Trackways from the Holy Cross Mountains, Poland; Locomotion in a Terrestrial Setting?

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Martin Qvarnström; [2015]
    Keywords : Tetrapods; palaeoenvironment; trackways; paleosols; microfacies; trace fossils; fin-limb transition; Holy Cross Mountains.;

    Abstract : The palaeoenvironment from which early tetrapods emerged is crucial to comprehend in order to understand the mechanisms that drove and allowed the terrestrialization of vertebrates; one of the most important evolutionary ‘events’ in the history of animals. Nevertheless, much of the terrestrialization is shrouded in obscurity, inter alia, due to scarcity of early tetrapods in the fossil record. READ MORE

  4. 3. Late Ordovician communities from North America

    University essay from Lunds universitet/Geologiska institutionen

    Author : Charlotte Ahlgren; [1997]
    Keywords : North America; Cincinnati region; Upper Ordovician; Cincinnatian; fossil communities; palaeoenvironmental reconstructions; Earth and Environmental Sciences;

    Abstract : Sammanfattning: Med utgångspunkt från den fossiliserade hårdvävnaden har paleomiljö och faunor, från sex olika tidpunkter och platser i de överordoviciska lagren i Cincinnati-området (USA), rekonstruerats. Materialet består vanligen av kalksten, men en del lerstens-stuffer förekommer också. READ MORE

  5. 4. Trace fossils and Palaeoenvironments in the Middle Cambrian at Äleklinta, Öland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Björn Gedda; [1993]
    Keywords : micro-ripples; kinneyans; shrinkage cracks; Cruziana; Halopoa; Planolites; Protichnites; Teichichnus; Middle Cambrian; Äleklinta; Öland; Sweden; Rikets nät N 631715 W 195878; silt; shale; trace fossils; Earth and Environmental Sciences;

    Abstract : The Middle Cambrian at Äleklinta, Öland, consists predominantly of a heterolitic sequence with interbedded shale and siltstone. The sediments were deposited in a westfacing marine bay by northeastern, sometimes reversing currents. Long periods of slow mud settling alternated with short periods of silt influx. READ MORE