Essays about: "Younger Dryas"

Showing result 1 - 5 of 9 essays containing the words Younger Dryas.

  1. 1. Impactites from the Hiawatha crater, North-West Greenland

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Jacob Gustafsson; [2020]
    Keywords : Hiawatha; impact crater; Cape York; Baffin Bay; Greenland Ice Sheet; Younger Dryas; meteorite; impactite; organic carbon; conifer; vitrinite reflectance; Ro; cellular texture; chromite; chromium isotope; toasted quartz; ballen quartz; melted carbonate; granular zircon; planar deformation feature;

    Abstract : The recent discovery of the 31-km-wide Hiawatha impact crater has raised unanswered questions about its age, impactor and highly unusual organic carbon component. Previous research suggests a fractionated iron meteorite impactor, a probable maximum 3–2.4 Ma impact age and a possible Younger Dryas impact age. READ MORE

  3. 2. Dynamics of a retreating ice sheet : a LiDAR study in Värmland, SW Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Alastair Goodship; [2017]
    Keywords : LiDAR; SIS; retreat; deglacial; DEM; geomorphology; Värmland; Earth and Environmental Sciences;

    Abstract : Värmland in south central Sweden lies across the established zone of aquatic-terrestrial transition of the Scandinavian Ice Sheet margin during its rapid final retreat following the Younger Dryas. Recently acquired LiDAR data across Värmland allows more highly detailed observation and analysis of glacial landforms formed during this stage than has previously been possible. READ MORE

  4. 3. Vegetation responses to Late Glacial climate shifts as reflected in a high resolution pollen record from Blekinge, south-eastern Sweden, compared with responses of other climate proxies

    University essay from Lunds universitet/Geologiska institutionen

    Author : Artemis Karlatou-Charalampopoulou; [2016]
    Keywords : lake sediments; Blekinge; SE Sweden; Pleistocene-Holocene boundary; loss on ignition; pollen analysis; high time-resolution; time lags; Earth and Environmental Sciences;

    Abstract : Denna studie fokuserar på en nästan 1700 år lång sjösedimentsekvens från Hässeldala Port i centrala Blekinge, sydöstra Sverige. Den omfattar övergångsperioden mellan pleistocen och holocen, eller mer precist eventen GI-1a och GS-1 samt början av den holocena epoken i iskärnorna, vilket motsvarar de sydsvenska pollenzonerna sen allerød till tidig preboreal. READ MORE

  5. 4. Cryptic refugia vs. Tabula Rasa: Boreal trees in glacial Fennoscandia : Plant growth during the Weichselian glaciation and the early Holocene in northern Europe

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

    Author : Anne van Woerkom; [2016]
    Keywords : boreal trees; Fennoscandia; cryptic refugia; Weichselian; glacial survival;

    Abstract : Recent studies applying innovative technologies, such as genetic analysis and carbon dating, contradict the palynological based assumption that Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) vanished from Fennoscandia during the Last Glacial Maximum (c. 20.000 yrs BP) and re-colonized after the cold Younger Dryas (c. 12. READ MORE

  6. 5. Optically Stimulated Luminescence (OSL) dating of aeolian sediments of Skåne, south Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Rajendra Shrestha; [2013]
    Keywords : Vomb basin; South Sweden; Skåne; Aeolian; Sediments; Grain size; Luminescence; OSL; Chronology; Earth and Environmental Sciences;

    Abstract : Wind is an important agent of transportation of sediments and to change the landscape. Aeolian sediments can be inferred as a proxy for past climate. In Sweden aeolian sediments are not widespread and there are not so many studies on chronological and paleoenvironmental aspects. READ MORE