Essays about: "shallow marine environment"

Showing result 1 - 5 of 19 essays containing the words shallow marine environment.

  1. 1. The Origins and Ecology of Early Paleozoic Spreiten Ichnofossils: Comparisons of Daedalus and Syringomorpha with Alectorurus

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Zane Goodell; [2023]
    Keywords : trace fossils; ichnology; Cambrian; Daedalus desglandi; Alectorurus circinatus; Syringomorpha nilssoni; the agronomic revolution;

    Abstract : The Cambrian explosion not only shaped the ecosystems of the Phanerozoic, but fundamentally changed how biota interacts with the environment, including the substrate. Cambrian trace fossils Alectorurus and Syringomorpha as well as Ordovician-Silurian Daedalus represent novel modes of faunal interaction with the newly innovated shallow marine mixed-ground and have surprisingly limited stratigraphic ranges. READ MORE

  3. 2. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Scott Green; [2022]
    Keywords : biosignature; tubular structures; Lower Cambrian; silica precipitation; bifurcating; biosignatur; rörstrukturer; Kambrium Serie 3; kiseldioxid utfällning; förgrening;

    Abstract : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. READ MORE

  4. 3. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Anna Stella Guðmundsdóttir; [2021-03-18]
    Keywords : ;

    Abstract : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing Firkanten Formation, has been the subject of study for researchers in the past but little focus has been on the northeast edge of the basin until now. Due to the economic potential of the coal seams in the formation, the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several years conducted core drilling in key locations in basin, and for decades, they have given an access to their core material to researchers. READ MORE

  5. 4. Microplastics in the Oresund Region of the Baltic Sea - sources and effects

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Simon Bystedt; [2018]
    Keywords : Microplastic; microbeads; source; effects; wastewater; review; baltic; agriculture; sludge; Earth and Environmental Sciences;

    Abstract : Plastic production is only increasing, and it‟s not showing any signs of slowing down. Microplastics are particles smaller than 5 mm, either produced intentionally, or created from items being withered into small particles. READ MORE

  6. 5. The Establishment of Macrobenthic Faunal Communities in Planted Mangroves of Increasing Age

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Simon Jacobsen Ellerstrand; [2017]
    Keywords : Benthos; Shannon-diversity; forestation; biodiversity; ecosystem engineers; development issues; Biology and Life Sciences;

    Abstract : The mangrove ecosystem is a tropical coastal community inhabited by organisms adapted to the stressful environment of the tidal zone. Mangrove ecosystems has in recent years been noted for the important ecosystem services they offer. READ MORE