Holocene climate and environment variations from a multi-proxy lake sediment study in Rondane mountain massif, central Norway, and description of a new mid-Holocene basaltic tephra

摘要: Rondane mountain massif in east-central Norway was the first area to be protected as a National Natural Reserve 1962. As continuation of recent update Quaternary geology map, Geological Survey (NGU) has initiated detailed stratigraphical analysis lake sediments and terrestrial deposits central Rondane. The aim is facilitate deeper understanding regional deglaciation pattern, Holocene climate environmental evolution. Climate variations have controlled evolution flora fauna, which turn influenced at least 4000 years human activity this relatively continental, high-alpine region. cores from Lake Rondvatnet, an elongated (3 x 0,4 km) tectonically valley cuts through massif, been analyzed for density, magnetic susceptibility, x-ray radiography, XRF multi-element , TOC pollen content. Ground penetrating radar together with surficial soil mapping used visualize sub-bottom surfical south lake, connected history.