Essays about: "paleosol"

Showing result 1 - 5 of 8 essays containing the word paleosol.

  1. 1. Reconstructing Weathering and Climate Trends on Loess Deposits in NW France Using XRF Analysis

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Hanna Andersson; [2021]
    Keywords : geochemistry; loess; XRF; weathering; climate change; N-W France;

    Abstract : Analyzing climate changes by loess sediment deposits formed after the last glacial maximum gives us information about how the environment was dynamically before humans physically could record climate changes. Sampling and analyzing loess from different places in the world give us a more reliable view of when events and changes in climate took place. READ MORE

  3. 2. Aeolian and Pedogenic Processes of Loess in Southern England

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Ragna Orbe; [2019]
    Keywords : loess; Pegwell Bay; grain size distribution; magnetic susceptibility; past-climate reconstruction; lössavlagringar; Pegwell Bay; partikelstorleks distribution; magnetisk mottaglighet; historisk klimatrekonstruktion;

    Abstract : Loess is an aeolian sediment that can be utilized as a detailed proxy of past climate, since it is one of few sediments that is deposited directly from the atmosphere on land. Investigation of loess deposits can give understanding of past regional and local wind circulation patterns and velocities, atmospheric dustiness, as well as paleo-precipitation and weathering conditions. READ MORE

  4. 3. Investigation into the Loess-Palaeosol and Red Clay Record from the Pliocene- Quaternary Chinese Loess Plateau Using In-Phase and Out-OfPhase Magnetic Susceptibility

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Rebecca Jacobson; [2018]
    Keywords : loess; Chinese Loess Plateau; magnetic susceptibility; out-of-phase; viscous relaxation; lössjord; Kinesiska Lössjordsplatån; magnetiska känsligheter; ur-fas; viskös relaxation;

    Abstract : Loess is a well sorted, fine grained, windblown (aeolian) sediment and deposits as a blanket over large areas, reaching from a few centimetres to several hundreds of meters in height and can drape large landscapes in form of mountains. During a more humid and warmer climate, redox conditions are changed in the loess deposits, with greater seasonal moisture creating greater soil formation (pedogenesis), i. READ MORE

  5. 4. Ancient DNA in paleosols, SW Greenland : A tool for retrospective paleoenvironmental studies?

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Kimmo Kumpula; [2018]
    Keywords : Ancient DNA; paleosol; paleoenvironment; Greenland; Arctic;

    Abstract : Ancient DNA (aDNA) is a useful tool for retrospective paleoenvironmental studies. Paleosols formed in Arctic environments constitute a potential archive of aDNA from terrestrial organisms living in past environments, given that the cold and dry climate prevailing at high latitudes favors DNA preservation and hamper post-depositional mobility of deposited fragments. READ MORE

  6. 5. Single-Grain Zircon U-Pb Dating and Magnetic Susceptibility of Polish Loess to Determine Late Quaternary Dust Provenance and Paleoclimate

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Alexandra Engström Johansson; [2018]
    Keywords : dust provenance; Polish loess; paleoclimate; single-grain zircon U-Pb dating; magnetic susceptibility; härkomstområden för atmosfäriskt stoft; polsk lössjord; paleoklimat; U-Pb datering av zirkoner; magnetisk susceptibilitet;

    Abstract : Windblown mineral dust has accumulated into thick loess layers across the European continent. Loess deposits are valuable paleoclimatic archives as they record climate change on centennial- to glacialinterglacial timescales. READ MORE